Vitamin D deficiency has been linked with rickets, cancer, cardiovascular disease, severe asthma in children and cognitive impairment in older adults. Causes include not ingesting enough of the vitamin over time, having limited exposure to sunlight, having dark skin, and obesity. Symptoms include bone pain and muscle weakness. Treatment for vitamin D deficiency involves obtaining more vitamin D through supplements, diet, or exposure to sunlight. Read more: Vitamin D Deficiency Article
Multimedia: Slideshows, Images & Quizzes
Vitamin D Deficiency: How Much Vitamin D Is Enough?
What does vitamin D do? Learn about vitamin D benefits and discover foods that are high in vitamin D. Explore vitamin D...
Body Pain: What Does It Mean When Your Whole Body Aches?
Body aches are a symptom of the flu, arthritis, autoimmune disease, infections like Lyme disease, and other conditions. Body pain...
Lactose Intolerant? How to Get Calcium and Vitamin D
See how to eat right when dairy gives you stomach problems. WebMD shows you ways to get calcium and vitamin D through...
9 Signs of Perimenopause
Perimenopause occurs before menopause as estrogen levels begin to change. This can cause menopause like symptoms such as hot...
Diet and Nutrition Quiz: Plans & Facts
Even if you think you're getting enough fruits and vegetables per day, how can you be sure? Take the Diet & Nutrition Quiz to...
Vitamins and Supplements: Test Your Medical IQ
Take the Vitamins & Supplements Quiz to learn just how many essential vitamins your body needs to function!
Superfoods Quiz: List of Top Superfoods
Take our Superfoods Quiz! Get to know how unprocessed, raw, organic foods and healthy drinks are rich in nutrients and dietary...
Vitamin D Quiz: Test Your IQ of Dietary Supplements
What happens to the body when there is a vitamin D deficiency? Take the Vitamin D Quiz to find out what you may be missing.
Vitamins and Supplements: Foods High in Vitamin D
Vitamin D is important for your bones, blood cells, and immune system -- your body's defense against germs. Find out which foods...
Related Disease Conditions
What Vitamins Should Not Be Taken Together?
Some vitamins that should not be taken together, or have dosage limitations, include vitamin C with vitamin B-12, vitamin A supplement with vitamin A-rich foods, folic acid (vitamin B9) and vitamin B12, and vitamin E with vitamin K.
High Blood Pressure (Hypertension)
High blood pressure (hypertension) is a disease in which pressure within the arteries of the body is elevated. About 75 million people in the US have hypertension (1 in 3 adults), and only half of them are able to manage it. Many people do not know that they have high blood pressure because it often has no has no warning signs or symptoms. Systolic and diastolic are the two readings in which blood pressure is measured. The American College of Cardiology released new guidelines for high blood pressure in 2017. The guidelines now state that blood normal blood pressure is 120/80 mmHg. If either one of those numbers is higher, you have high blood pressure. The American Academy of Cardiology defines high blood pressure slightly differently. The AAC considers 130/80 mm Hg. or greater (either number) stage 1 hypertension. Stage 2 hypertension is considered 140/90 mm Hg. or greater. If you have high blood pressure you are at risk of developing life threatening diseases like stroke and heart attack.REFERENCE: CDC. High Blood Pressure. Updated: Nov 13, 2017.
Cancer is a disease caused by an abnormal growth of cells, also called malignancy. It is a group of 100 different diseases, and is not contagious. Cancer can be treated through chemotherapy, a treatment of drugs that destroy cancer cells.
Diabetes (Type 1 and Type 2)
Diabetes is a chronic condition characterized by high levels of sugar (glucose) in the blood. The two types of diabetes are referred to as type 1 (insulin dependent) and type 2 (non-insulin dependent). Symptoms of diabetes include increased urine output, thirst, hunger, and fatigue. Treatment of diabetes depends on the type.
Obesity and Overweight
Get the facts on obesity and being overweight, including the health risks, causes, reviews of weight-loss diet plans, BMI chart, symptoms, causes, surgical and nonsurgical treatments, and medications.
An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances. When these allergens come in contact with the body, it causes the immune system to develop an allergic reaction in people who are allergic to it. It is estimated that 50 million North Americans are affected by allergic conditions. The parts of the body that are prone to react to allergies include the eyes, nose, lungs, skin, and stomach. Common allergic disorders include hay fever, asthma, allergic eyes, allergic eczema, hives, and allergic shock.
Constipation is defined medically as fewer than three stools per week and severe constipation as less than one stool per week. Constipation usually is caused by the slow movement of stool through the colon. There are many causes of constipation including medications, poor bowel habits, low-fiber diets, laxative abuse, and hormonal disorders, and diseases primarily of other parts of the body that also affect the colon.
Pregnancy (Week by Week, Trimesters)
Signs and symptoms of pregnancy vary by stage (trimester). The earliest pregnancy symptom is typically a missed period, but others include breast swelling and tenderness, nausea and sometimes vomiting, fatigue, and bloating. Second trimester symptoms include backache, weight gain, itching, and possible stretch marks. Third trimester symptoms are additional weight gain, heartburn, hemorrhoids, swelling of the ankles, fingers, and face, breast tenderness, and trouble sleeping. Eating a healthy diet, getting a moderate amount of exercise, also are recommended for a healthy pregnancy. Information about the week by week growth of your baby in the womb are provided.
Is It Better to Take Vitamins in the Morning or Night?
Doctors recommend multivitamins for certain vitamin deficiencies. If you're taking a vitamin supplement for any type of vitamin deficiency, you should try to take it at a time when your body can best absorb it.
Lumbar lordosis or "swayback," lower back curvature), in children, adults, and women who are pregnant is an abnormal posture with a low back curve. Symptoms of lumbar lordosis in include lower back pain and discomfort, difficulty in moving certain directions due to back pain, and a large gap or arch between the lower back and a flat surface when you lay down. Common causes of lumbar lordosis in children, adults, and during pregnancy include obesity, kyphosis, bad posture, genetics, and other disorders of the spine. Treatment for lumbar lordosis include exercise, weight loss, surgery, and pain medication. Lumbar lordosis can be reversed and cured; however, it depends on how severe the symptoms are. Lumbar lordosis treatments may help reduce pain and other symptoms or Mild lordosis in children may be cured without treatment, while severe lumbar lordosis needs surgery to fix. Lumbar lordosis can be reversed "cured" or go back to normal or near normal.
Multiple Sclerosis (MS)
Multiple sclerosis or MS is an autoimmune disorder in which brain and spinal cord nerve cells become demyelinated. This damage results in symptoms that may include numbness, weakness, vertigo, paralysis, and involuntary muscle contractions. Different forms of MS can follow variable courses from relatively benign to life-threatening. MS is treated with disease-modifying therapies. Some MS symptoms can be treated with medications.
What Vitamin Deficiency Causes Ringing in the Ears?
Ringing in the ears has been linked to vitamin B12 and vitamin D deficiencies. Treating an underlying cause of tinnitus such as a vitamin deficiency may help relieve symptoms.
Cancer Risk Factors and Causes
Though it's difficult to say why some people develop cancer while others don't, research shows that certain risk factors increase a person's odds of developing cancer. These risk factors include growing older, family history of cancer, diet, alcohol and tobacco use, and exposure to sunlight, ionizing radiation, certain chemicals, and some viruses and bacteria.
Vitamin D Deficiency
Osteopenia is a bone condition characterized by bone loss that is not as severe as in osteoporosis. Bone fracture is the typical symptom of osteopenia, though the condition may be present without symptoms. Treatment involves lifestyle modifications (quitting smoking, not drinking in excess) and ensuring an adequate intake of vitamin D and calcium.
Osteoarthritis is a type of arthritis caused by inflammation, breakdown, and eventual loss of cartilage in the joints. Also known as degenerative arthritis, osteoarthritis can be caused by aging, heredity, and injury from trauma or disease.
Erectile Dysfunction (ED, Impotence)
Erectile dysfunction (ED, impotence) is the failure to achieve or maintain an erection. There are many potential underlying causes of erectile dysfunction, including stress and emotional problems, brain dysfunction, problems with blood supply to the penis, and structural problems with the penis.
Depression is an illness that involves the body, mood, and thoughts and affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about things. The principal types of depression are major depression, dysthymia, and bipolar disease (also called manic-depressive disease).
Skin cancers occur when skin cells undergo malignant transformations and grow into tumors. The most common types of skin cancer, basal cell carcinoma and squamous cell carcinoma, are highly curable when they are diagnosed and treated early. Sun exposure, tanning beds, depressed immune system, radiation exposure, and certain viral infections are risk factors for skin cancer. Skin cancers are treated with surgery or radiation. The prognosis of nonmelanoma skin cancers is generally very good.
Learn about osteoporosis, a condition characterized by the loss of bone density, which leads to an increased risk of bone fracture. Unless one experiences a fracture, a person may have osteoporosis for decades without knowing it. Treatment for osteoporosis may involve medications that stop bone loss and increase bone strength and bone formation, as well as quitting smoking, regular exercise, cutting back on alcohol intake, and eating a calcium- and vitamin D-rich balanced diet.
Fatty Liver (NASH)
Nonalcoholic fatty liver disease or NASH occurs due to the accumulation of abnormal amounts of fat within the liver. Fatty liver most likely caused by obesity and diabetes. Symptoms of fatty liver disease are primarily the complications of cirrhosis of the liver; and may include mental changes, liver cancer, the accumulation of fluid in the body (ascites, edema), and gastrointestinal bleeding. Treatment for fatty liver includes avoiding certain foods and alcohol. Exercise, weight loss, bariatric surgery, and liver transplantation are treatments for fatty liver disease.
Vitamins and Calcium Supplements
Vitamins are organic substances that are essential for the proper growth and functioning of the body. Calcium is a mineral essential for healthy bones and is also important for muscle contraction, heart action, and normal blood clotting.
Cystic fibrosis is a disease of the mucus and sweat glands. Cystic fibrosis is an inherited disease. The outcome of the disease leaves the body malnourished, with bulky and fouls smelling stools, vitamin insufficiency, gas, painful or swollen abdomen, infertility, susceptible to heat emergencies, and respiratory failure. There is no cure for cystic fibrosis, treatment of symptoms is used to manage the disease.
Osteoarthritis vs. Osteoporosis Differences and Similarities
Arthritis is defined as painful inflammation and joint stiffness. Osteoarthritis is a type of arthritis and the most common cause of chronic joint pain, affecting over 25 million Americans. Osteoarthritis is a type of arthritis that involves the entire joint. Osteoporosis is not a type of arthritis. It is a disease that mainly is caused by a loss of bone tissue that is not limited to the joint areas. It is possible for one person to have both osteoarthritis and osteoporosis. The differences in the signs and symptoms of osteoarthritis and osteoporosis include; pain, stiffness, and joint swelling, joint deformity, crackle sounds when the joint is moving, and walking with a limp. Osteoporosis is called the "silent disease" because it can progress for years without signs and symptoms before it is diagnosed, severe back pain, bone fractures, height loss, and difficulty or inability to walk. The differences in the causes of osteoarthritis and osteoporosis are that osteoarthritis usually is caused by wear and tear on the joints. Osteoporosis usually is caused by one or more underlying problems, for example, calcium and vitamin D deficiencies. Treatment for osteoarthritis and osteoporosis are not the same. There is no cure for osteoarthritis or osteoporosis.
Celiac disease is a condition in which a person has inflammation of the small intestinal mucosa when exposed to gluten in the diet. Symptoms of celiac disease include bloating, nausea, diarrhea, and abdominal discomfort. Treatment is a gluten free diet. Some individuals may have refractory celiac disease in which they do not respond to a gluten free diet.
Asthma is a condition in which hyperreactive airways constrict and result in symptoms like wheezing, coughing, and shortness of breath. Causes of asthma include genetics, environmental factors, personal history of allergies, and other factors. Asthma is diagnosed by a physician based on a patient's family history and results from lung function tests and other exams. Inhaled corticosteroids (ICS) and long-acting bronchodilators (LABAs) are used in the treatment of asthma. Generally, the prognosis for a patient with asthma is good. Exposure to allergens found on farms may protect against asthma symptoms.
Crohn's disease is a chronic inflammatory disease, primarily involving the small and large intestine, but which can affect other parts of the digestive system as well. Abdominal pain, diarrhea, vomiting, fever, and weight loss are common symptoms and signs.
Rickets is caused by a deficiency of vitamin D, calcium, or phosphate. Infants and children who are exclusively breastfed, have dark skin, and infants born to mothers who are vitamin D deficient are most at risk for developing rickets. Symptoms and signs of rickets include bone pain, delayed teeth formation, short stature, skeletal deformities (bowlegs, abnormally shaped skull), and decreased muscle strength. Treatment of rickets depends upon the cause, but the first step usually involves correcting any abnormal levels of calcium, phosphate, or vitamin D with supplements.
Multiple Sclerosis (MS) Symptoms and Treatments
Multiple sclerosis (MS) symptoms vary from person to person, and can last for days to months without periods of remission. Symptoms of MS include sexual problems and problems with the bowel, bladder, eyes, muscles, speech, swallowing, brain, and nervous system. The early symptoms and signs of multiple sclerosis usually start between age 20 and 40. MS in children, teens, and those over age 40 is rare. Treatment options for multiple sclerosis vary depending on the type and severity of symptoms. Medications may be prescribed to manage MS symptoms.
What Does Vitamin D Do for the Body?
Vitamin D is an essential nutrient the body needs to keep bones and muscles healthy, as well as build a strong immune system.
Learn more about cavities including symptoms, treatment, and prevention. See how tooth decay, plaque, and bacteria contribute to the creation of cavities and how regular brushing and flossing can help prevent dental caries.
Is Multiple Sclerosis (MS) Contagious?
Multiple sclerosis, or MS, is a degenerative disease of the covering around the nerves in the central nervous system (CNS). Researchers and doctors don't know the exact cause, but many theorize that it may be due to environmental triggers, an autoimmune disease, and viruses (infections). Symptoms and signs of MS include vision changes, paralysis, vertigo, heat intolerance, slurred speech, sexual dysfunction, and urinary incontinence (the inability to urinate). There's no vaccine or cure for MS, but the progression and symptoms of the disease can be treated.
Sunscreens are crucial for sun protection. Sun damage to the skin from exposure to ultraviolet rays is a risk factor for skin cancer and melanoma. To avoid sunburn, people should limit sun exposure during the peak hours of 10 a.m. to 3 p.m., wear protective clothing, and use a sunscreen. People with sensitive skin should use a sunscreen with an SPF of 30 or more.
What Foods Are Highest in Vitamin D?
What are the foods highest in Vitamin D? Learn about the best sources to make sure this vitamin is included in your diet.
Asthma in Children
Asthma in children manifests with symptoms such as coughing and wheezing. Rates of asthma in children are increasing. Asthma in children is usually diagnosed based on the description of symptoms. Lung function tests may also be used. A variety of medications are used for the treatment of childhood asthma.
Primary Biliary Cirrhosis (PBC) Treatment
Primary biliary cirrhosis (PBC) is thought to be an autoimmune disorder that involves the deterioration of the liver's small bile ducts. These ducts are crucial to transport bile to the small intestine, digesting fats and removing wastes. Symptoms of PBC are edema, itching, elevated cholesterol, malabsorption of fat, liver cancer, gallstones, urinary tract infections (UTIs), and hypothyroidism. Treatments include ursodeoxycholic acid (UDCA); colchicine (Colcrys); and immunosuppressive medications, such as corticosteroids; obeticholic acid (Ocaliva); and medications that treat PBC symptoms. For PBC that is associated with cirrhosis of the liver, liver transplantation may be indicated in extreme cases.
What Are the Symptoms and Causes of Vitamin D Deficiency?
What is vitamin D deficiency? Learn the signs of vitamin D deficiency and what foods you can eat to help prevent vitamin D deficiency.
What Vitamins Can Help Boost My Mood?
Studies have identified a few vitamins that can help boost your mood, including vitamin D, B vitamins, vitamin K, and vitamin C.
What Are the Benefits of Vitamin D?
Vitamin D is an essential nutrient for our bodies. Learn about eight benefits of vitamin D, how to know if you’re getting enough vitamin D, and what to eat to increase vitamin D in your body.
What Is the Best Vitamin Supplement to Take?
Dietary supplements are a general term that includes vitamins, minerals, botanicals, probiotics and other products to supplement the diet. The best vitamin supplement differs from person to person depending on their gender, age and any health conditions they have.
What Happens If You Don’t Get Enough Calcium and Vitamin D?
Vitamin D and calcium deficiency can lead to the following medical conditions and issues.
Vitamins & Exercise: Heart Attack Prevention Series
Vitamins and exercise can lower your risk for heart attack and heart disease. Folic acid, vitamins, and homocysteine levels are interconnected and affect your risk for heart disease or heart attack. For better heart health, avoid the following fried foods, hard margarine, commercial baked goods, most packaged and processed snack foods, high fat dairy, and processed meats such as bacon, sausage, and deli meats.
How Do I Know If I Am Getting Enough Vitamin D?
Vitamin D is an important nutrient that helps your body function properly. The best way to find out if you are getting enough vitamin D through your lifestyle and diet is to take the 25-hydroxy vitamin D blood test.
How Do You Know if You're Getting Enough Vitamin D?
Vitamin D is an important hormone in your body that helps you regulate your calcium and phosphorus balance and bone density. The best way to know if you’re getting enough vitamin D is if you get the recommended amount in your diet.
Does Vitamin D Protect Against COVID-19?
COVID-19 or coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It manifests as mild to moderate respiratory illness in most people who may not require any special treatment. Certain high-risk groups, such as older people and people with underlying health conditions (chronic respiratory diseases, diabetes, cancer and cardiovascular diseases), are more likely to get seriously ill.
Local ResourcesFind a local Family Physician in your town
Treatment & Diagnosis
- Hip Pain
- Pinpoint Pupils (Miosis)
- Erectile Dysfunction (Impotence)
- Knee Pain
- Sleep Apnea
- Doctor: Checklist to Take To Your Doctor's Appointment
- How to Choose a Doctor
- Vitamin D Deficiency
- Thyroid Q & A
- Doctor: Getting the Most from Your Doctor's Appointment
- Fibromyalgia: Dreaming of a Pain-Free Christmas
- Diet & Nutrition FAQs
- Superfoods FAQs
- Vitamin D FAQs
- Vitamins and Supplements FAQs
- Truths, Lies, and Sunscreens
- Osteoarthritis - Vitamin D May Prevent Progression
- Osteoporosis - 2001 National Meeting Reports
- Celiac Disease Symptoms
- Who should get a bone density test?
- Does Vitamin D Deficiency Cause Symptoms?
- Diet and Depression: How Food Can Help with Depression Symptoms
- Vitamin D: Winterize Your Diet
Medications & Supplements
- vitamin D (Drisdol (Vitamin D2), Ergocalciferol (Vitamin D2), Cholecalciferol (Vitamin D3)
- vitamin A (Oral Natures Way Vitamin A, Now Foods Vitamin A, GNC Vitamin A, and many more brands)
- pantothenic acid
- ferrous sulfate
- calcium supplement/vitamin d - oral, Citracal + D, Os-Cal, Oyster S
- panax ginseng
- vitamin A
- Kanuma (sebelipase alfa)
Prevention & Wellness
- Vitamin D Overdose: How Much Is Too Much?
- Vitamin D Deficiency Linked to Severe COVID
- High Vitamin D Levels May Help Prevent COVID-19
- Vitamin D: Good for Health, Fights COVID-19
- High-Dose Vitamin D Won't Prevent Seniors' Falls: Study
- Your Microbiome & Vitamin D Levels May Be Linked
- Fish Oil, Vitamin D, and Exercise: How Helpful Are They?
- How Are Vitamin D Levels Tied to COVID-19 Risks?
- Too Little Vitamin D Might Raise Odds of Coronavirus Infection
- Vitamin D Won't Reduce Risk of Depression
- Healthy Vitamin D Levels Could Be Linked to COVID-19 Survival
- Vitamin D Might Aid Seniors' Recovery From Hip Fracture: Study
- Indoor Athletes Often Lacking in Vitamin D
- Vitamin D in Pregnancy Doesn't Curb Kids' Asthma
- Vitamin D Alone Doesn't Prevent Fractures, New Study Finds
- Vitamin D is Key to Muscle Strength in Older Adults
- Low Vitamin D Levels, Shorter Life?
- AHA News: Vitamin D Is Good for the Bones, But What About the Heart?
- How to Keep Your Bones Strong and Prevent Fractures
- AHA News: Stroke May Lead to Lower Vitamin D
- How Does Sunshine During Pregnancy Affect Learning?
- Low Vitamin D at Birth Linked to Kids' High Blood Pressure Risk
- Vitamin D Supplements May Not Help Your Heart
- For One Man, Too Much Vitamin D Was Disastrous
- Health Tip: Build Stronger Bones
- Daily Vitamin D Could Be a Lifesaver for Some COPD Patients
- Could You Be Short on Vitamin D?
- Healthful Diet & Healthy Bones
- Health Tip: Get More Vitamin D
- Vitamin D Supplements Won't Build Bone Health in Older Adults: Study
- Vitamin D No Panacea for Brain Diseases
- No Proof Vitamin D Lowers Blood Pressure in Pregnancy: Study
- Could More Vitamin D Help Prevent Breast Cancer?
- Vitamin D Deficiency Could Be Lung Disease Risk
- Vitamin D May Guard Against Colon Cancer
- Vitamin D May Lower Miscarriage Risk
- Lower Vitamin D Levels Linked to More Belly Fat
- First Drug for Rare Form of Rickets Approved by FDA
- The Dynamic Duo: Calcium and Vitamin D
- Vitamin D3 May Benefit Heart Surgery Patients
- Lack of Vitamin D Can Sideline College Football Players
- Vitamin D Supplements May Make Arteries Healthier
- Seniors Don't Need Calcium, Vitamin D Supplements: Review
- When Treating Infertility, Vitamin D Levels May Be Key
- Could Fish Oil, Vitamin D Help Ease Lupus?
- Higher Doses of Vitamin D May Boost Preemies' Bone Health
- Exercise, Not Vitamin D, Recommended to Prevent Falls
- High-Dose Vitamin D May Not Curb Kids' Colds
- Could Your Office Job Rob You of Vitamin D?
- Many Americans May Be Taking Too Much Vitamin D
- Vitamin D Fails the Asthma Test
- Exercise and Vitamin D: A Heart-Healthy Combo
- Health Tip: How to Get Enough Vitamin D
- High-Dose Vitamin D Failed to Curb Heart Disease in Study
- High Doses of Vitamin D Fail to Cut Cancer Risk, Study Finds
- Many College Football Players Lack Vitamin D: Study
- Older Bones Benefit From Dairy Plus Vitamin D
- Don't Skip Veggies in Winter
- Vitamin D Pumps Up Muscles
- Vitamin D Linked to Lower Risk of Respiratory Infections
- Could Low Vitamin D Levels at Birth Mean Higher MS Risk?
- Vitamin D May Affect Breast Cancer Survival
- Low Vitamin D Levels May Raise Bladder Cancer Risk: Study
- Vitamin D Levels May Fall When Women Stop Taking Birth Control
- Vitamin Deficiencies Common in Young Migraine Sufferers
- Men Miss Out on Bone Loss Screening
- Tanning May Limit Skin's Ability to Produce Vitamin D: Study
- Vitamin D Boosts Heart Function in Study
- Vitamin D a No Go for Arthritic Knees, Study Finds
- Low Prenatal Vitamin D Linked to Later MS in Offspring
- Low Vitamin D Levels May Signal More Aggressive Prostate Cancer
- Vitamin D While Pregnant Won't Boost Most Infants' Bone Health, Study Says
- Prenatal Diet Rich in Vitamin D May Cut Allergy Risk in Kids: Study
- Prenatal Vitamin D Supplements May Not Lower Baby's Asthma Risk: Study
- Could Higher Vitamin D Doses Harm Seniors Prone to Falls?
- Could High-Dose Vitamin D Help Fight Multiple Sclerosis?
- When and Where of Weight-Loss Surgery May Affect Vitamin D Levels
- IBS Linked to Low Vitamin D
- Vitamin D Won't Guard Against Colds in People With Asthma
- Vitamin D Deficiency Might Be Tied to Erectile Dysfunction
- Scientists Pinpoint What Level of Vitamin D Promotes Heart Health
- Vitamin D, Calcium May Not Prevent Colon Cancer After All
- Too Little Vitamin D May Hasten Mental Decline
- Fewer Seniors Fall While Taking Vitamin D: Study
- Vitamin D Supplements Little Help for Obese Teens, Study Finds
- Vitamin D Supplements Won't Strengthen Older Women's Bones: Study
- Health Tip: Get Enough Vitamin D
- Vitamin D, Calcium Don't Reduce Menopause Symptoms
- Vitamin D Levels Tied to Survival in Seriously Ill Cats
- Vitamin D Supplements Might Help Some Lose Weight
- Little Risk of Vitamin D Toxicity, Study Says
- Exercise, But Not Vitamin D, Cuts Injuries From Falls in Older Women: Study
- Vitamin D Supplements Might Slow Prostate Cancer, Study Suggests
- Vitamin D Won't Help Fight High Blood Pressure, Researchers Say
- Low Levels of Vitamin D Linked to Type 2 Diabetes Risk
- Low Vitamin D Levels in Stroke Survivors a Bad Sign, Study Finds
- Low Vitamin D Levels in Childhood May Raise Heart Risks: Study
- Vitamin D May Boost Colon Cancer Survival, Study Finds
- Low Vitamin D Levels Linked to Risk of Preterm Birth in Study
- Low Levels of Vitamin D May Raise Early Death Risk: Study
- Health Tip: Think You're Getting Enough Calcium?
- Vitamin D May Not Prevent Return of Women's Infection After All
- Vitamin D Might Help Kids With Eczema
- Could Vitamin D Make Childbirth Less Painful?
- Gene Study Finds No Proof Vitamin D Guards Against Type 2 Diabetes
- Women's Vitamin D Levels May Play Role in IVF Success
- Low Vitamin D Levels May Boost Alzheimer's Risk, Study Finds
- Low Vitamin D Levels Linked to High Blood Pressure
- Vitamin D: A Key to a Longer Life?
- Prom Isn't a Good Reason to Hit the Tanning Salon
- Vitamin D Supplements May Not Help Ease Asthma
- Vitamin D May Not Lower Seniors' Fall Risk
- Too Little Vitamin D May Add to Obesity's Burden
- Jury Still Out on Benefits of Vitamin D
- Vitamin D Deficiency May Be Linked to Heart Disease
- Low Vitamin D Could Up Risk for Birth Complication: Study
- Vitamin D Supplements: FAQ
- Vitamin D Supplements Don't Help Your Health: Review
- Vitamin D Levels Linked to Parkinson's Symptoms
- Vitamin D May Slow Multiple Sclerosis, Study Suggests
- Vitamin D Supplements May Help Ease Fibromyalgia Pain: Study
- Vitamin D Supplements Won't Help Prevent Disease: Review
- Vitamin D Deficiency Might Be Overdiagnosed in Blacks, Study Suggests
- Low Vitamin D Tied to Anemia Risk in Kids
- Study: Vitamin D Supplements May Not Raise Risk for Kidney Stones
- No Sign That Vitamin D Supplements Help Aging Bones: Study
- Vitamin D Alone Doesn't Boost Bone Health, Study Says
- Vitamin D Deficiency Often Seen in Traumatic Bone Breaks
- Calcium Plus Vitamin D Won't Cure Joint Pain, Study Finds
- Vitamin D Supplements Don't Lower Blood Pressure: Study
- Too Little Vitamin D May Hasten Disability as You Age
- Heart Dangers of Low Vitamin D Levels May Vary
- Women on Hormone Therapy May Benefit From Extra Calcium, Vitamin D
- Vitamin D Levels Vary by Season
- Extra Vitamin D May Ease Crohn's Symptoms, Study Finds
- Study Looks at Vitamin D Needs in Breast-Fed Babies
- Vitamin D May Help Prevent Uterine Fibroids
- Vitamin D Important During Pregnancy, Study Suggests
- Vitamin D Levels in Pregnancy May Not Affect Kids' Future Bone Health
- Healthy Older Women Advised Against Taking Calcium
- Women's Vitamin D Needs Don't Vary By Race, Study Finds
- Vitamin D Supplements: Is What You See What You Get?
- Vitamin D Loss Attributed to Obesity
- Vitamin D Doesn't Improve Knee Arthritis, Study Finds
- Low Vitamin D in Early Pregnancy Tied to Lower Birth Weight
- Low Vitamin D More Common in Overweight Kids
- Vitamin D Levels Linked to Daytime Sleepiness
- Vitamin D in Pregnancy May Be Key to Women's Risk for MS, Study Says
- Obese Children Struggle With Joint Pain: Study
- Health Issues Add to Risk of Vitamin D Deficiency, Study Says
- Millions May Be Taking Vitamin D Unnecessarily, Analysis Suggests
- Strike Vitamin D Off the List for Cold Prevention?
- Vitamin D in Pregnancy May Be Key for Baby's Brain
- Vitamin D in Pregnancy Critical for Brain Development, Study Says
- Vitamin D Supplements Won't Help Cholesterol Levels: Study
- Vitamin D May Thwart Kids' Winter Colds
- Calcium, Vitamin D Supplements May Pose Risks for Men With Prostate Cancer
- Vitamin D Deficiency Common in Sick Kids
- Low Vitamin D Levels May Raise Death Risk in Older Adults: Study
- Vitamin D May Delay Deterioration of Smokers' Lungs: Study
- Higher Doses of Vitamin D Prevent Fractures in Older Women
- Vitamin D Deficiency Linked to Depression
- Low Vitamin D Linked to Weight Gain in Older Women
- Could Sunlight Lower Your Odds for Pancreatic Cancer?
- Vitamin D With Calcium May Boost Survival
- Vitamin D and Calcium Pills: Task Force Report
- More Vitamin D Might Help Older People Stay Active
- Exercise, Vitamin D Can Lower Fall Risk in Elderly
- Japanese-American Men With Low Vitamin-D Diet Face Higher Stroke Risk
- Vitamin D May Affect Lung Transplant Success
- Vitamin D Doesn't Help Kids Do Better in School, Study Finds
- More Insight on Possible Role of Vitamin D Against Alzheimer's
- Vitamin D May Cut Stress Fracture Risk in Girls
- Lack of Vitamin D May Harm Older Women's Health
- Vitamin D May Ease Painful Periods
- Vitamin D May Not Boost Heart Health in Kidney Patients
- Low Vitamin D in Pregnancy Linked to Language Problems in Children
- Sunny Skies Linked to Lower Stroke Risk
- Study: Vitamin D Has No Clear Benefit for COPD Patients
- Too Much Vitamin D Could Be Harmful to Heart
- Low Levels of Vitamin D May Be Linked to Depression
- Are the Benefits of Vitamin D Overhyped?
- Tanning Booths Increase Risk of Most Common Skin Cancer
- Low Vitamin D May Raise Diabetes Risk in Kids
- Southerners May Be Less Likely to Have Crohn's
- Research Sheds Light on Vitamin D's Role in Immunity
- Pale People at Risk for Vitamin D Deficiency
- Low Vitamin D Levels Linked to Advanced Cancers
- Pregnant Women Don't Need Vitamin D Screening
- New Guidelines Suggest Higher Doses of Vitamin D
- Low Vitamin D Levels May Be Linked to MS
- Low Vitamin D at Birth Linked to Lung Infections
- Use of Dietary Supplements on the Rise
- Low Vitamin D Linked to Allergy Risk in Kids
- Women With MS More Likely to Have Gene Mutation
- Vitamin D May Improve Asthma Control
- Vitamin D Deficiency Linked to Diabetes, Metabolic Syndrome in Studies
- Genes May Play a Role in Vitamin D Deficiency
- Half of Black Teens May Be Vitamin D Deficient
- Vitamin D Deficiency Worsens Breast Cancer?
- Diet Plans & Programs
- Vitamins, Minerals and Nutritional Supplements
- How Much Vitamin D Is Too Much?
- Which Is Better for You, Vitamin D3 or Vitamin D?
- What Are the Most Common Vitamin Deficiencies?
- Ten Effective Ways to Increase Vitamin D Intake
- What Are Examples of Weight-Bearing Exercises?
- Is a Vitamin D Supplement as Good as Sunlight?
- Vegetarian and Vegan Diet
- What Are the 14 Benefits of Vitamin D?
- How Much Vitamin D Can I Take in a Day?
- How Can I Increase My Vitamin D Level?