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Updated: February 28,2022
Could one of these 7 prescription weight-loss pills be right for you?
Just over 42% of adult Americans are obese (defined by having a body mass index over 30)—and that number is expected to grow to 50% by 2030 . Because of the myriad health conditions that all those extra pounds can cause, many are wondering: Can losing weight be as simple as taking a pill?
Prescription weight-loss pills aren’t a magic bullet. But when used in conjunction with a healthy diet , restricting calorie intake, and exercise, they can help some people on their weight loss journey. On average, after one year of use, people taking prescription weight-loss medication lose 3% to 12% more body weight than people who use diet and exercise alone. This may not sound that impressive, but that difference can be enough to help reduce your risk of heart attack, stroke, and diabetes.
“We live in what we now call an obesogenic environment,” says Juliana Simonetti, MD , co- director of the Comprehensive Weight Management Program at the University of Utah. “Physiologically speaking, we’re built to hold on to calories so we can survive things like famine and war. We also eat many calorie-dense foods and have 24/7 access to food. All these things promote weight gain. Weight-loss medications can help us overcome some of that physiology and control our appetites so we can lose weight.”
So, what are the best weight loss pills out there? Read on to find out.
7 FDA-approved weight-loss pills.
Prescription medications for weight loss work in different ways. Some work by targeting areas of the brain that regulate appetite. By altering certain brain chemicals, these drugs act as an appetite suppressant and/or increase feelings of fullness. Some drugs use a different pathway, helping to interfere with your body’s absorption of fat. Because obesity can be a chronic health issue, many of these drugs are meant to be used long term, even after you reach your ideal weight—assuming you’re responding to the medication in the first place.
“A common analogy is blood pressure medication,” says Aleem Kanji, MD , a board-certified endocrinologist and obesity medicine specialist with Ethos Endocrinology in Houston, Texas. “Most would expect high blood pressure to return if medication is discontinued. Obesity is the same. It is a chronic disease that requires chronic therapy.”
But not everyone is a candidate for weight-loss drugs. Use of prescription weight-loss medications is typically reserved for people who:
Have a BMI (body mass index) of 27 or greater with the presence of a weight-related disease or complication—for example, Type 2 diabetes, high cholesterol, or high blood pressure Have a BMI of 30 or greater.
A BMI of 25-30 puts a person in the overweight category. A BMI over 30 is considered obese. Your primary care physician can prescribe a weight-loss medication, as can an obesity medicine doctor or endocrinologist, who treats weight-related health conditions like diabetes. Currently, there are only a handful of weight-loss medications approved by the Food and Drug Administration (FDA). The most commonly used ones include the following.
1. Lomaira, Adipex (phentermine)
Phentermine is the most commonly prescribed weight-loss medication used in this country. It helps suppress appetite and make you feel fuller for longer. Phentermine is an amphetamine-like stimulant drug that can affect your heart. As such, it’s generally used for the short term (usually 12 weeks at a time).
Side effects can run the gamut and may include:
Shortness of breath Chest pain Increased blood pressure Increased heart rate/pounding heart Restlessness/problems sleeping Dry mouth Dizziness Changes in mood Itchiness.
In one study looking at nearly 800 people with BMIs of over 25, 45.6% of people were able to lose 5% or more of their starting body weight after 12 weeks of phentermine use.
According to the drug’s FDA prescription information , certain people should not use the drug, including:
Those with cardiovascular disease (including uncontrolled high blood pressure and heart arrythmias) People who have taken a monoamine oxidase inhibitor (MAOI—a type of drug that’s sometimes used to treat depression) within 14 days Pregnant or nursing women People with glaucoma Those with an overactive thyroid People who have mood disorders, especially manic/depressive moods or agitation.
2. Qsymia (phentermine/topiramate)
Qsymia combines a low dose of phentermine with topiramate , a drug used to treat seizures and migraines. “The phentermine helps suppress appetite and the topiramate appears to reduce cravings,” says Dr. Simonetti. “Because we use a low dose of phentermine, Qsymia can be used over a long period of time and typically produces good results.”
Qsymia comes in a variety of dosages .
For the first two weeks, your provider will prescribe a dose of 3.75/23 mg (3.75 mg of phentermine, 23 mg of topiramate) taken in capsule form once a day. Starting in week three, you’ll be prescribed a 7.5/46 mg capsule. If you’ve lost at least 3% of your overall body weight by the end of 12 weeks, you’ll stay on this dose indefinitely. If not, your healthcare provider may up the dose to a maximum of 15/92 mg.
Qsymia may cause some of the same side effects as other medications containing phentermine, as well as possible additional side effects due to the topiramate. One of the biggest dangers of Qsymia is its link to birth defects. It’s imperative that you talk to your doctor about preventing pregnancy if you want to try Qsymia and to take monthly pregnancy tests if you’re at risk for pregnancy. And while Qsymia can have other serious side effects, including suicidal thoughts, increased irritability, worsening depression/anxiety and heart and eye problems, the most common ones include:
Tingling or numbness in hands, feet, arms, and face Dry mouth Constipation Trouble sleeping Dizziness Changes in the way food tastes.
Research shows that Qsymia can help people lose weight, even at low doses (although.
the higher doses produce more weight loss). In one study , people who took the average dose of Qsymia (7.5/46 mg) lost 7.8% of their body weight and those taking the highest dose (15/92 mg) lost nearly 10%.
Qsymia may not be right for certain groups of people, including:
Pregnant/nursing women or women trying to conceive People with cardiovascular problems Those with glaucoma People who drink heavily People with an anxiety disorder Those with uncontrolled hyperthyroidism (an overactive thyroid) Those with prior issues of kidney stones People who have taken an MAOI within 14 days.
3. Saxenda (liraglutide)
The active ingredient in Saxenda is a glucagon-like peptide-1 (GLP-1) receptor agonist , a class of drugs used to treat Type 2 diabetes and keep blood sugar levels in check. GLP-1 is a hormone your body naturally makes that’s released in response to food and helps regulate your appetite. Saxenda mimics the action of GLP-1 in your body, but it lasts much longer than naturally occurring GLP-1. As such, it can help suppress hunger longer and slow the movement of food emptying from your stomach. Both factors can help you eat less overall and lose weight.
“I have patients tell me that they never left food on their plates before, but with Saxenda, they’re eating less and getting full quickly,” comments Dr. Simonetti. In late 2020, Saxenda was approved for use in adolescents.
Saxenda is a daily injectable with dosing increasing from 0.6 mg in week one to 3.0 mg by week five. While Saxenda can cause some serious side effects , such as inflammation of the pancreas (called pancreatitis), gallbladder problems, and mood changes, the most common side effects include:
Nausea Diarrhea Constipation Vomiting Low blood sugar (hypoglycemia) Headache Dizziness Tiredness Stomach pain.
A study following more than 500 people found that 50.5% of those taking liraglutide were able to lose at least 5% of their body weight during the study period versus 21.8% who took a placebo. Even more impressive, 26.1% of the drug group were able to lose 10% of their body weight compared to just 6.3% in the placebo group.
Saxenda carries a black box warning (the FDA’s strongest alert to consumers and healthcare providers about very serious side effects) due to the fact that animal studies have linked liraglutide and medicines like it to certain thyroid tumors and thyroid cancer . It’s important that you not use Saxenda if you have had these conditions or have a family history of them. Saxenda isn’t appropriate for pregnant or nursing women. Talk to your healthcare provider if you’re taking medicines that act like GLP-1 receptor agonists. Because Saxenda can slow stomach emptying, it’s also important to ask your doctor how that may affect other prescription and over-the-counter medicines you take.
4. Contrave (naltrexone and bupropion)
Contrave combines naltrexone (used to treat substance abuse) and bupropion (an antidepressant that’s marketed under the brand name Wellbutrin). It’s thought to work on the brain to regulate appetite and cravings.
Like a lot of weight-loss medications, your dose of Contrave will start out low and.
increase over time.
Week one: One pill in the morning. Week two: Two pills, one in the morning and the other at night. Week three: Two pills in the morning and one in the evening. Week four and beyond: Four pills per day—two in the morning, two in the evening.
Contrave can potentially produce serious side effects, such as suicidal thoughts and seizures, but the most common side effects are:
Nausea Constipation Headache Vomiting Dizziness Trouble sleeping Dry mouth Diarrhea.
One study examined how Contrave contributed to weight loss when used in conjunction with behavior therapy (sessions with registered dietitians, exercise specialists, and psychologists). Compared to those receiving a placebo and therapy, 1.5 times as many people in the Contrave/therapy group were able to lose at least 5% of their body weight compared to those in the placebo group.
Contrave should not be used in people who:
Have uncontrolled hypertension Have seizures Are pregnant Use other drugs containing bupropion Are withdrawing from alcohol and certain other drugs Have used an MAOI within 14 days.
5. Plenity.
Plenity is technically a medical device, not a medication. It’s a capsule that contains superabsorbent hydrogel particles. When the capsule is swallowed, the particles are released, helping to fill up to one fourth of the stomach (when a person is fully hydrated). With the stomach at least partially full, you’re apt to eat less.
You take three Plenity capsules with 16 ounces of water before lunch and dinner. The particles absorb the water and mix with the food in your stomach, helping you feel fuller so you eat less.
The most common side effects are:
Bloating Abdominal pain Flatulence.
One study showed that 59% of those taking Plenity lost 5% or more of their body weight and 27% lost more than 10% of their weight. That’s compared to 42% and 15%, respectively, in the placebo group.
Plenity is not approved for use in those under the age of 22. You also shouldn’t take it if you’re allergic to citric acid, cellulose, gelatin, and other ingredients of the gel.
6. Xenical, Alli (orlistat)
Orlistat is a lipase inhibitor, meaning it blocks the enzyme that helps absorb some of the fats in the foods you eat. Meaning, less of the fat you consume makes it into fat cells to become stubborn belly fat. Orlistat comes in two different strengths—an over-the-counter 60mg strength marketed as Alli and a prescription-strength (120mg) marketed as Xenical.
Xencal is taken by mouth three times a day, with or within one hour of a meal that contains fat.
The most common side effects of Xenical are:
Oily stools Gas with an oily discharge Loose stools Urgent need to have a bowel movement/unable to control bowel movement More frequent bowel movements.
Xenical is not as effective as some other weight-loss prescriptions. One study comparing orlistat with liraglutide found that those using the latter were able to lose more than twice as much weight as those taking orlistat.
People who should not take Xenical are people who:
Are pregnant or breastfeeding Have gallbladder problems Have food absorption issues.
Xenical can affect the absorption of not just fat, but also of vitamins from the foods you eat. Make sure you talk to your healthcare provider about taking a multivitamin supplement.
7. Wegovy (semaglutide)
Wegovy is the newest FDA-approved weight-loss medication and works much the same way as Saxenda, by mimicking the action of the hormone GLP-1 to suppress hunger.
Wegovy is a once-a-week injectable . Dosage is increased over the course of several weeks-to-months, until a 2.4 mg dose is achieved.
Some of the most common side effects include:
Nausea Diarrhea Constipation Vomiting Stomach pain Indigestion Headache Fatigue Belching/flatulence Low blood sugar (if you have Type 2 diabetes)
In one study , the mean change in body weight was -14.9% in the Wegovy group versus -2.4% in the placebo one. Eighty-four percent of those in the Wegovy group lost 5% or more of their body weight compared to 31.5% of those taking a placebo.
Like Saxenda, Wegovy carries a black box warning due to the possibility that it may increase your risk of certain thyroid tumors and cancer. Pancreatitis, gallbladder disease, kidney injury, low blood sugar, and other conditions have also been reported with Wegovy use . Get Wegovy coupon.
Safety information.
Prescription weight loss drugs can be effective, but they aren’t risk free. While most side effects are mild, some can be very serious and will vary based on the drug and the person using it. According to Devika Umashanker, MD , an obesity medicine specialist with Hartford HealthCare’s Medical and Surgical Weight Loss Program, some red flags that require a doctor’s attention are:
Increased heart rate that doesn’t slow down Shortness of breath Kidney stones (symptoms include abdominal pain, back pain, and/or blood in the urine) Seizures Low blood sugar (symptoms are dizziness, feeling clammy, and increased heart rate) Bumps—aka nodules—around the front of your neck (this can indicate a thyroid problem) All-over severe stomach pain (this could signal pancreatitis)
Of course, your physician should be monitoring you while you’re on the medication, but if something is worrying you, reach out. “I tell my patients, you know your body best,” Dr. Umashanker explains. “If something feels off, give us a call.”
If you decide to stop taking the drug for any reason, speak to your doctor about how to do so safely. Quitting cold turkey can be dangerous with some of these drugs. “Contrave, for example, has to be gradually reduced,” cautions Dr. Umashanker, “to reduce the risk of seizures.”
What is the best prescription weight-loss pill for you?
And now for the million dollar question: Given the choices, which are the best diet pills based on safety and effectiveness? Turns out there’s no one best answer.
“Looking strictly at the studies, Wegovy has the highest percent of body weight loss,” Dr. Kanji notes. “However, we have to keep in mind that each study had a different patient population and method. It’s also difficult to generalize safety profiles as it should come down to each individual’s situation. For example, a person with a history of pancreatitis would want to avoid Wegovy and Saxenda but may be fine with Qsymia. On the other hand, a person with a history of kidney stones may want to avoid Qsymia.”
It’s important to remember that these drugs should be used in combination with natural weight-loss strategies, like diet and exercise, for optimal results. Some tips to help you get to a healthy weight?
Eat high-fiber, protein-rich foods to feel more satisfied. Consider trying a low-carb, low-fat diet—or limiting your intake of processed carbohydrates (think white bread, sweets, pasta). Focus on making plant-based diet choices. Research shows that it can be beneficial for weight loss, and they contain lots of healthy antioxidants. Don’t label foods good or bad. Instead, aim to make 80% to 90% of what you eat healthy. Get regular exercise to burn calories, decrease body fat, boost metabolism, and increase muscle mass. Experts say you should aim for 150 minutes of moderate- intensity activity (for example, brisk walking or biking) a week.
And steer clear of any pill or herbal remedy that claims to be the best weight-loss supplement such as:
Green coffee bean extract Konjac (a root) L-carnitine (an amino acid derivative) Green tea extract Garcinia cambogia (a fruit) Conjugated linoleic acid (CLA)
While these dietary supplements may claim to promote fat loss and fat burning and help you lose weight, well-conducted scientific studies don’t always bear this out. What’s more, these diet supplements are not regulated by the FDA, which means you can’t be sure of exactly what’s in them. Even natural ingredients at certain levels can be toxic to some people.
Lastly, many of these prescription medications can be prohibitively expensive, and not all are covered by insurance. Use your SingleCare card to lower costs whenever you can.
Can New Weight-Loss Drugs Really Treat Obesity?
There is no magic pill that will cure obesity, a condition that affects over 40% of adults in the United States. But there are new types of medicines that are potential game-changers. They are anti-obesity medications, and doctors say that part of what makes them unique is how they are prescribed: They are used to treat obesity as the chronic metabolic disease it is rather than perpetuating the misconception that obesity is a problem that can be overcome by willpower.
One such medication that has been making headlines is called tirzepatide. According to a study published in June in The New England Journal of Medicine , use of the drug, a novel GIP/GLP-1 receptor agonist, in the trial resulted in more than a 20% weight reduction in those with obesity—an average of 52 pounds per person.
“These results are an important step forward in potentially expanding effective therapeutic options for individuals with obesity,” says Ania Jastreboff, MD, PhD, a Yale Medicine adult and pediatric endocrinologist, and a nationally recognized obesity medicine expert.
Tirzepatide has not yet been approved by the Food and Drug Administration (FDA) for use as an anti-obesity medication. It was, however, approved for the treatment of type 2 diabetes. The drug trial’s sponsor, Eli Lilly, is working with the FDA on a timeline for approval.
Another weight-loss medication is called semaglutide (it’s available by prescription under the brand name Wegovy ™ ), and it is given once a week by self-injection under the skin. It was approved by the FDA for the treatment of overweight and obesity in June 2021 (with similar medications being developed as well). Semaglutide doesn’t work for everyone, but when it’s successful, it can help someone shed 15% of their body weight. (If you weigh 200 pounds, for example, that would be 30 pounds.)
“This medicine helps you feel full earlier,” says Dr. Jastreboff. “It means you will have little desire to reach for ‘seconds’ or a snack later.”
Anti-obesity medications have been around for decades, and there are several currently in use. But semaglutide is the first of a new generation of highly effective hormone-based obesity medications. Semaglutide mimics a hormone called glucagon-like peptide-1 (GLP-1), which is secreted in the gut and targets receptors throughout the body, including the brain. When a person is eating, GLP-1 sends the brain the “I’m full” signal, Dr. Jastreboff says.
Semaglutide also decreases “gastric emptying,” the process by which stomach contents are moved into the first part of the small intestine as part of the digestive process. “But this effect wanes over time,” says Dr. Jastreboff. “The main way semaglutide helps treat obesity is through its action in the brain.”
The drug—and class of medications—is not new, though; this class of GLP-1 analogue medications has been used for over 15 years to treat type 2 diabetes (semaglutide specifically was FDA-approved in 2017 for diabetes). Individuals with type 2 diabetes secrete less GLP-1 in response to eating compared to those who do not have the condition. Experts believe that’s also true for people with obesity, Dr. Jastreboff explains. “With semaglutide, people are receiving more GLP-1, albeit in a synthetic form," she says. "They're essentially getting back more of that hormone, which helps them feel full.”
For many people, the medication appears to work. The results of a clinical trial, published in The New England Journal of Medicine , showed that—in addition to the 12.5% mean weight reduction above the placebo group (which included lifestyle interventions only)—more than a third of the participants (many of whom weighed more than 200 pounds) lost 20% of their weight.
We sat down with Dr. Jastreboff and her colleagues. They answered commonly asked questions about anti-obesity medications.
Do anti-obesity medications actually work?
One of Dr. Jastreboff’s study participants, a 49-year-old mother of three with a full-time job (who did not want her name used), participated in a clinical trial at Yale that involved weekly injections to test tirzepatide, which combines GLP-1 and another hormone called glucose-dependent insulinotropic peptide (GIP). Dr. Jastreboff was the site principal investigator.
The participant had tried numerous diets and exercise plans to lose extra weight she’d carried for decades, but nothing worked. Even though she worked hard at maintaining a healthy lifestyle, she gained 25 pounds working at home during the pandemic. “But the rest of it, I’ve carried all my life,” she says.
Since it was a double-blind trial, in which some participants were given a placebo, at first she didn’t know if she was taking the drug, but says over a period of about a year, “the weight melted off of me.” Near the end of the trial, she had lost 85 pounds, so she believes she was taking the drug.
“It worked for me because my issue is mindlessly overeating. Because the drug often makes me feel incredibly full after just a few bites, it has been a real change to my eating habits,” the participant says. She used to consume 3,000 calories a day “easily,” and in the trial, she has been unable to take in more than 1,500. “One serving of Oreos is three cookies, and it was always a struggle to stop at three,” she says. “In the trial, I found it a real struggle to eat more than three.”
“These drugs [like semaglutide and tirzepatide] have the potential to help many more people,” says Artur Viana, MD, a Yale Medicine gastroenterologist and clinical director of the Metabolic Health & Weight Loss Program, where he has prescribed semaglutide. He notes that the performance of the drug—15% to 20% weight loss—is impressive because it signifies a trend in which anti-obesity medications are starting to approach the 25% to 30% weight loss mark that so far has only been achieved with bariatric surgery.
Medication treatment for obesity is less invasive and works more gradually than surgery. Patients typically start with a low dose of .25 milligrams and work up to the target dose of 2.4 milligrams over a period of about 5 months. “The weight loss is gradual, but tends to slow down with time, leading to a new plateau,” Dr. Viana says.
It can take more than a year for the drug to reach full effectiveness, although some patients hit their plateau earlier than that. For any anti-obesity medication, doctors want to see a benchmark of 5% total body weight loss in the first three months, which is a good predictor of whether the medication will continue to work, Dr. Viana explains.
What are the side effects of anti-obesity medications?
Side effects for semaglutide were monitored in the trials leading up to its FDA approval. The most common side effects with semaglutide are gastrointestinal—and include nausea—and that is often managed by adjusting the dosage, says Dr. Viana. “You consider how the patient feels as the dosage increases, and you can always go back to a lower one,” he says.
Dr. Jastreboff’s participant in the tirzepatide clinical trial had side effects that included stomach problems, some exhaustion, and difficulty staying hydrated, but the participant thought they were minor compared to the side effects and complications of obesity.
"When I was obese, my joints were aching, I couldn’t fit into my clothing—I was embarrassed to go out and be seen,” she says. “We all know airplane seats are getting smaller, but that logic does nothing when you’re trying to wedge yourself in between the arms and have to extend the seatbelt to its fullest.”
Scientists continue to study the long-term benefits and safety of anti-obesity medications, and will do the same with drugs that are still in the clinical trial phase.
Meanwhile doctors say patients will need to take the medications for years—and probably for life—to avoid having the weight come back. “We talk about diabetes remission, and, in the same way, patients have obesity remission,” Dr. Jastreboff says.
“Patients are not ‘cured’ once they lose the weight," Dr. Jastreboff adds. "They need to continue treatment with anti-obesity medications in order to maintain the weight they lost, just as they would need to continue taking diabetes medication to maintain blood sugar levels.”
Is everyone eligible for anti-obesity medications?
Doctors still prescribe older FDA-approved medications, which also target the brain. Those medications can help people lose 5% to 10% of their weight, an amount that can reduce the risk of cardiovascular disease in adults with obesity or overweight. The older generation of anti-obesity medications includes those that need to be taken once a day or more—one requires daily injections.
But not everyone is eligible for treatment with semaglutide. Doctors can prescribe it for adults who have obesity, with a body mass index (BMI) of greater than 30; or overweight, with a BMI greater than 27 accompanied by weight-related medical problems such as high blood pressure, type 2 diabetes, or high cholesterol. (BMI is a measure used to determine weight categories. The Centers for Disease Control and Prevention [CDC] provides BMI calculators on its website.) The medication is not recommended for those with a personal or family history of certain endocrine or thyroid tumors, specifically, medullary thyroid cancer.
"Obesity is a complex metabolic disease with a clear biological basis, and we can treat it with targeted therapy aimed at the biology,” says Ania Jastreboff, MD, PhD, a Yale Medicine adult and pediatric endocrinologist.
Another caveat is that not everyone will respond—about 13% of individuals with obesity in the semaglutide clinical trials didn’t lose any weight, Dr. Jastreboff says. That doesn’t surprise her, because there are different kinds—or subtypes—of obesity, she says. “We just don’t know what they are yet.”
“We don't yet have biomarkers where we can subtype obesity, similar to what’s done for cancer or other disease,” Dr. Jastreboff says. “There are no blood tests that could let someone know they’re going to respond to a given therapy or medication, such as a GLP-1 analogue like semaglutide.”
Researchers need to learn more about the different subtypes of obesity before anyone can know what the best strategy is for a given patient, she adds.
Will there be ‘trial and error’ in finding the right anti-obesity medication for me?
Until they learn more, doctors gather information about such factors as a patient’s eating behavior and other components. There also may be some necessary “trial and error” in identifying the best medication for you, Dr. Viana says.
But there can also be educated choices. For instance, if someone has a history of depression and seems to be overeating to cope, they might benefit from an older-generation medication called bupropion (brand names: Wellbutrin™ and Zyban™, among others), which is also an antidepressant—and typically combined with a medication called naltrexone (Contrave™). “By using that drug or combination of drugs, we might be hitting the mechanism that's most responsible for that patient’s obesity,” he says.
For those who want to reduce their weight even more—and further reduce such related symptoms as gastrointestinal reflux—another approach may be using several medications, or combining a medication with another intervention, says Dr. Viana.
All anti-obesity medications are prescribed along with a lifestyle program that addresses eating and exercise. Dr. Viana has also combined medication treatment and an endoscopic procedure, such as endoscopic sleeve gastroplasty, a minimally invasive procedure aimed at reducing the size of the stomach. Dr. Viana says patients can lose 15% of their weight from that procedure, but then they hit a plateau. “If you reach that plateau—and your personal goal has not been achieved—you can add a medication that will help you lose more weight," he says.
What is the goal of treatment—losing weight or getting healthy?
Losing weight can improve self-perception and mood, but Dr. Jastreboff emphasizes that the goal of treating obesity is not about achieving a certain size—it’s about health.
The goal of treatment with anti-obesity medications is to reset “the set point,” a term that describes a weight range the body tries to maintain, and one which is elevated in the setting of obesity, she explains. “If you lose weight by restricting calories, your body thinks it's starving,” Dr. Jastreboff says, adding that this spurs a person to keep eating to maintain the elevated set point. Anti-obesity medications work in the brain to help to bring that set point down, enabling individuals not only to lose weight but also to maintain the weight loss.
Depending on the patient and their other diseases, anti-obesity medications can also help with other weight-related medical problems, such as improving blood pressure or cholesterol levels, improving blood sugar levels in patient with diabetes, and delaying the onset of type 2 diabetes. The class of GLP-1 analogue medications has also been found to decrease the occurrence of repeat heart attacks and strokes in those who have type 2 diabetes.
Will these drugs finally change the way people think about obesity?
The doctors hope that knowing medications can treat the pathophysiology of obesity will change common misconceptions that people should be able to control the condition on their own.
“When people think, ‘If I can will myself to not be hungry, to not have cravings, to control what I eat every moment of every day, I will lose the weight and keep it off,' it's like saying, ‘If I just concentrate hard enough, my blood sugar levels will become normal,’" Dr. Jastreboff says. People need to know that there are physiological reasons why that strategy doesn’t work, she adds. “Obesity is a complex metabolic disease with a clear biological basis, and we can treat it with targeted therapy aimed at the biology.”
But there is more work to be done before more doctors, patients, and insurance providers perceive obesity as a disease.
Tirzepatide is not available outside of the trial, and semaglutide is an expensive drug that is not necessarily covered by insurance at this point, says Dr. Jastreboff’s study participant from the tirzepatide trial. “The research says that when you stop the medication, you gain the weight back, so I’m likely to be on medication for the rest of my life,” she says. “But what will insurance cover? This needs to be available to everyone who needs it, and that’s one reason why it’s important to start looking at this as a medical issue and not a personal problem.”
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