Dr. Balentine received his undergraduate degree from McDaniel College in Westminster, Maryland. He attended medical school at the Philadelphia College of Osteopathic Medicine graduating in1983. He completed his internship at St. Joseph's Hospital in Philadelphia and his Emergency Medicine residency at Lincoln Medical and Mental Health Center in the Bronx, where he served as chief resident.
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
What is the role of medication in the treatment of obesity?
Medication treatment of obesity should be used only in patients who have
health risks related to obesity. Medications should be used in patients with a
BMI greater than 30 or in those with a BMI of greater than 27 who have other
medical conditions (such as high blood pressure, diabetes, high blood
cholesterol) that put them at risk for developing heart disease. Medications
should not be used for cosmetic reasons.
Like diet and exercise, the goal of medication treatment has to be realistic.
With successful medication treatment, one can expect an initial weight loss of
at least 5 pounds during the first month of treatment, and a total weight loss
of 10%-15% of the initial body weight. It is also important to remember that
these medications only work when they are taken. When they are discontinued,
weight gain can occur.
The first class (category) of medication used for weight control cause
symptoms that mimic the sympathetic nervous system. They cause the body to feel
"under stress" or " nervous." As a result, the major side effect of this
class of medication is high blood pressure. This class of medication includes
sibutramine (Meridia, which was taken off the market in the U.S. in October 2010
due to safety concerns) and phentermine (Fastin, Adipex P). These medications also
decrease appetite and create a sensation of fullness. Hunger and fullness
(satiety) are regulated by brain chemicals called neurotransmitters. Examples of
neurotransmitters include serotonin, norepinephrine, and dopamine. Anti-obesity
medications that suppress appetite do so by increasing the level of these
neurotransmitters at the junction (called synapse) between nerve endings in the
brain.
Phentermine
Phentermine (Fastin, Adipex P)
- (the other half of fen/phen) suppresses appetite by causing a
release of norepinephrine by the cells. Phentermine alone is still available for
treatment of obesity, but only on a short-term basis (a few weeks). The common
side effects of phentermine include headache, insomnia, irritability and
nervousness. Fenfluramine (the fen of fen/phen) and dexfenfluramine (Redux)
suppress appetite mainly by increasing release of serotonin by the cells.
Both fenfluramine and dexfenfluramine were withdrawn from the
market in September 1997 because of association of these two medications with pulmonary hypertension (a rare but serious disease of the arteries in the
lungs), and association of fen/phen with damage to the heart valves. Since the
withdrawal of fenfluramine, some have suggested combining phentermine with
fluoxetine (Prozac) - a combination that has been referred to as phen/pro.
However, no clinical trials have been conducted to confirm the safety and
effectiveness of this combination. Therefore, this combination is not an
accepted treatment for obesity.
Sibutramine (Meridia)
In December 1997, the United States Food and Drug Administration (FDA) approved
sibutramine (Meridia), a drug which increases the levels of serotonin and norepinephrine in the brain, to treat obesity (both in attaining and in maintaining weight loss). However, the drug was withdrawn from the market in October 2010 because clinical trial data indicated that it is associated with an increased risk of
heart attack and
stroke.
Orlistat (Xenical,
alli)
The next class (category) of drugs changes the metabolism of fat.
Orlistat (Xenical, alli) is the only drug of this category that is U.S. FDA approved. This is a class of anti-obesity drugs called lipase inhibitors, or fat blockers. Fat from food can only be absorbed into the body after being broken up (a process called digestion) by digestive enzymes called lipases in the intestines. By inhibiting the action of lipase enzymes, orlistat prevents the intestinal absorption of fat by 30%. Drugs in this class do not affect brain chemistry. Theoretically, orlistat also should have minimal or no systemic side effects (side effects in other parts of the body) because the major locale of action is inside the gut lumen and very little of the drug is absorbed.
The U.S. Food and Drug Administration approved orlistat capsules, branded as alli, as an over-the-counter (OTC) treatment for overweight adults in February 2007. The drug had previously been approved in 1999 as a prescription weight loss aid, whose brand name is Xenical). The OTC preparation has a lower dosage than prescription Xenical.
Orlistat is recommended only for people 18 years of age and over in combination with a diet and exercise regimen. People who have difficulties with the absorption of food or who are not overweight should not take orlistat. Overweight is defined by the U.S. National Institutes of Health as having a body mass index (BMI) of 27 or greater.
Orlistat can be taken up to three times a day, with each fat-containing meal. The drug may be taken during the meal or up to one hour after the meal. If the meal is missed or is very low in fat content, the medications should not be taken.
The most common side effects of orlistat are changes in bowel habits. These include gas, the urgent need to have a bowel movement, oily bowel movements, oily discharge or spotting with bowel movements, an increased frequency of bowel movements, and the inability to control bowel movements. Women may also notice irregularities in the
menstrual cycle while taking orlistat. Side effects are most common in the first few weeks after beginning to take orlistat. In some people the side effects persist for as long as they are taking the drug.
People with diabetes, thyroid conditions, who have received an organ transplant, or who are taking prescription medications that affect blood clotting should check with their physician before using OTC orlistat (alli), since drug interactions with certain medications are possible.
A long-term decrease in fat absorption can cause deficiency of fat-soluble vitamins (such as vitamins A, D, E, K). Therefore, patients on orlistat should receive adequate
vitamin supplementation.
Gallstones are stones that form when substances in the bile harden. Gallstones (formed in the gallbladder) can be as small as a grain of sand or as large as a golf ball. There can be just one large stone, hundreds of tiny stones, or any combination. The majority of gallstones do not cause symptoms.
High blood pressure, also known as hypertension, is a repeatedly
elevated blood pressure exceeding 140 over 90 mmHg -- a systolic pressure above
140 with a diastolic pressure above 90. There are two causes of high blood pressure, primary and secondary. Primary high blood pressure is much more common that secondary and its basic causes or underlying defects are not always known. It is known that a diet high in salt increases the risk for high blood pressure, as well as high cholesterol. Genetic factors are also a primary cause. Secondary high blood pressure is generally caused by another condition such as renal hypertension, tumors, and other conditions. Treatment for high blood pressure is generally lifestyle changes and if necessary, diet.
Gout is a condition that results from crystals of uric acid depositing in tissues of the body. Gout is a condition that can lead to abnormally elevated levels of uric acid in the
blood, recurring attacks of joint inflammation (arthritis), deposits of
hard lumps of uric acid in and around the joints, and decreased kidney
function and kidney stones.
Gas or "intestinal gas" means different things to different people. Everyone has gas and eliminates it by belching or farting (passing it through the rectum).
A skin tag is a small benign growth of skin that projects from the surrounding skin. Skin tags can vary in appearance (smooth, irregular, flesh colored, dark pigment, raised). Skin tags generally do not cause symptoms unless repeatedly irritated. Treatment for skin tag varies depending on the location on the body.
Hypothyroidism is any state in which thyroid hormone production is below normal. Normally, the
rate of thyroid hormone production is controlled by the brain at the pituitary.
Hypothyroidism is a very common condition and the symptoms of hypothyroidism are
often subtle.
Liver cancer is the fifth most common cancer in the world and the majority of patients with liver cancer will die within one year as a result. Patients with associated cirrhosis caused by chronic hepatitis B or C infections, alcohol, and hemochromatosis are at the greatest risk of developing liver cancer. Many patients with liver cancer do not develop symptoms until the advanced stages of the tumor which usually makes prognosis poor. The combination of an imaging study (ultrasound, CT, or MRI scans) and an elevated blood level of alpha-fetoprotein will most effectively diagnose liver cancer, while a liver biopsy can make a definitive diagnosis. Medical treatments, including chemotherapy, chemoembolization, ablation, and proton beam therapy, are not very effective. Surgical removal of the tumor or a liver transplant may be most effective in certain cases.
Pancreatic cancer is a malignant tumor of the pancreas. Pancreatic cancer has been called a "silent" disease because early pancreatic cancer usually does not cause symptoms.
Diabetes mellitus 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.
Cellulitis is an acute spreading bacterial infection below the surface of the skin characterized by redness, warmth, inflammation, and pain. The most common cause of cellulitis is the bacteria Staph (Staphylococcus aureus).
Low testosterone can affect both men and women. Causes of low testosterone in males include undescended testicles and injury to the scrotum. Low testosterone in females includes ovary conditions. Treatment for low testosterone in men includes testosterone replacement therapy. Currently there is no FDA approved testosterone treatment for women.
A stroke results from impaired oxygen delivery to brain cells via the bloodstream. A stroke is also referred to as a CVA, or cerebrovascular incident. Symptoms of stroke include: sudden numbness or weakness of the face, arm or leg. Sudden confusion, trouble speaking or understanding. Sudden trouble seeing in one or both eyes, sudden trouble walking, dizziness, or loss of balance, and/or sudden severe headache with no known cause. A TIA, or transient ischemic attack is a short-lived temporary impairment of the brain caused by loss of blood supply. Stroke is a medical emergency.
Though the cause of stomach cancer is unknown, risk factors for stomach cancer include diet, H. pylori infection, smoking age, gastritis, stomach surgery, family history, and pernicious anemia. Symptoms include stomach discomfort, feeling full after a small meal, nausea and vomiting, and weight loss. Treatment depends upon staging and may involve surgery, radiation therapy, or chemotherapy.
A pulmonary embolism occurs when a piece of a blood clot from deep vein thrombosis (DVT) breaks off and travels to an artery in the lung where it blocks the artery and damages the lung. The most common symptoms of a pulmonary embolism are shortness of breath, chest pain, and a rapid heart rate.
Cholesterol is naturally produced by the body, and is a building block for cell membranes and hormones. Low-density lipoprotein (LDL) cholesterol is the "bad" cholesterol, conversely, high-density lipoprotein (HDL) cholesterol is the "good" cholesterol. High cholesterol treatment includes lifestyle changes (diet and exercise), and medications such as statins, bile acid resins, and fibric acid derivatives.
Heart attack happens when a blood clot completely obstructs a coronary
artery supplying blood to the heart muscle. A heart attack can cause chest pain, heart failure, and electrical
instability of the heart.
There are several types of kidney cancer, including renal cell cancer (renal adenocarcinoma or hypernephroma), transitional cell carcinoma, and Wilms tumor. Symptoms of kidney cancer include blood in the urine, an abdominal lump or mass, chronic pain in the side, and tiredness. Treatment of kidney cancer--which may include surgery, arterial embolization, radiation therapy, biological therapy or chemotherapy--depends upon the stage of the disease and the patient's overall health.
Esophageal cancer is a disease in which malignant cells form in the esophagus. Risk factors of cancer of the esophagus include smoking, heavy alcohol use, Barrett's esophagus, being male and being over age 60. Severe weight loss, vomiting, hoarseness, coughing up blood, painful swallowing, and pain in the throat or back are symptoms. Treatment depends upon the size, location and staging of the cancer and the health of the patient.
Restless leg syndrome (RLS or restless legs syndrome) is a common cause for painful legs that typically eases with motion, and becomes worse and more noticeable at rest. This characteristic nighttime worsening can frequently lead to insomnia. Treatment of the symptoms of restless leg syndrome is generally with medication as well as treating any underlying condition causing restless leg syndrome.
Jock itch is an itchy red rash that appears in the groin area. The rash may be caused by a bacterial or fungal infection. People with diabetes and those who are obese are more susceptible to developing jock itch. Antifungal shampoos, creams, and pills may be needed to treat fungal jock itch. Bacterial jock itch may be treated with antibacterial soaps and topical and oral antibiotics.
There are many causes of scalp hair loss. This featured article covers the common ones such as patchy hair loss (alopecia areata, trichotillomania, and tinea capitis), telogen effluvium, and androgenetic alopecia (male-pattern baldness, female-pattern baldness).
Carpal tunnel syndrome is a condition in which irritation of the wrist's median nerve causes tingling and numbness of the thumb, index, and the middle fingers. This condition is known as tarsal tunnel syndrome in the ankles and feet. Treatment of carpal tunnel syndrome depends on the severity of the symptoms and the nature of any disease that might be causing the symptoms.
Polycystic ovarian syndrome (PCOS), also known by the name Stein-Leventhal syndrome, is a hormonal problem that causes women to have a variety of symptoms including irregular or no menstrual periods, acne, obesity, and excess hair growth. Treatment of PCOS depends partially on the woman's stage of life and the symptoms of PCOS.
Insulin resistance is the diminished ability of cells to respond to the action of insulin in transporting glucose (sugar) from the bloodstream into muscle and other tissues. Causes of insulin can include conditions such as stress, obesity, metabolic syndrome, and steroid use. Some of the risk factors for insulin resistance include fatty liver, heart disease, strokes, peripheral vascular disease, high cholesterol, and smoking. Treatment for insulin resistance are lifestyle changes and if necessary, medication.
Heart disease (coronary artery disease) is caused by a buildup of cholesterol deposits in the coronary arteries. Risk factors for heart disease include smoking, high blood pressure, heredity, diabetes, peripheral artery disease, and obesity. Symptoms include chest pain and shortness of breath. There are a variety of tests used to diagnose coronary artery disease. Treatment includes life-style changes, medications, procedures, or surgery.
Snoring, like all other sounds, is caused by vibrations that cause particles in the air to form sound waves. While we are asleep, turbulent air flow can cause the tissues of the nose and throat to vibrate and give rise to snoring. Any person can snore. Snoring is believed to occur in anywhere from 30% of women to over 45% of men. People who snore can have any body type. In general, as people get older and as they gain weight, snoring will worsen. Snoring can be caused by a number of things, including the sleep position, alcohol, medication, anatomical structure of the mouth and throat, stage of sleep, and mouth breathing.
The main features of metabolic syndrome include insulin resistance, hypertension (high blood pressure), cholesterol abnormalities, and an increased risk for clotting. Patients are most often overweight or obese. Lifestyle modification such as the Mediterranean diet, exercise, and quitting smoking are the preferred treatment of metabolic syndrome.
A pilonidal cyst is a cyst that forms near the cleft of the buttocks. The cysts are thought to be caused by the penetration of loose hairs into the skin. Symptoms and signs include pain, swelling, redness, warmth, and drainage of pus from the area of the cyst. Treatment of a pilonidal cyst involves incision and drainage.
Male breast cancer accounts for 1% of all breast cancers, and most cases are found in men between the ages of 60 and 70. A man's risk of developing breast cancer is one in 1,000. Signs and symptoms include a firm mass located below the nipple and skin changes around the nipple, including puckering, redness or scaling, retraction and ulceration of the nipple. Treatment depends upon staging and the health of the patient.
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