Fact or Fiction? The Truth About Obesity and Weight Loss Medicine

Obesity, the buildup of excess fat, is a chronic condition that may require medical care. In 2025, more than 232 million adults in the United States are obese or overweight. Obesity increases the risk of serious health conditions, including type 2 diabetes and heart disease. When diet and exercise are not enough to manage obesity, weight loss medicine may help. This medicine has benefits and risks. It is important to be informed. It can be hard to know whether the things you hear or read about weight loss medicine are true. Here are some facts to consider, as well as some common myths you can rule out.

Facts About Weight Loss Medicine

Benefits

• Improves and prevents other chronic health conditions
  Weight loss medicine helps reduce the risk of heart attacks. It also improves diabetes, high blood pressure, high cholesterol, depression, fatty liver and sleep apnea.
• FDA-approved oral and injectable medicine
  There are commonly used, effective oral medicines like phentermine/topiramate and naltrexone/bupropion. There are also injectable medicines, such as liraglutide, semaglutide and tirzepatide. Some of these oral and injectable medications are approved for children ages 12 years and older.
• Faster weight loss
  Studies show people using weight loss medicine can lose 5 to 22.5 percent of their body weight in one and a half years, when combined with healthy lifestyle changes.
• Reduces hunger
  Medicine can reduce constant food thoughts and cravings (“food noise”), slow digestion and help individuals feel full for longer.

Drawbacks of Weight Loss Medicine

• Not suitable for everyone
  Weight loss medicines are not safe for women trying to get pregnant. Injectable medicine should not be used by people with thyroid cancer (personal or family history), those who have a genetic condition called MEN2 syndrome, during pregnancy or while breastfeeding. Some oral medicines are unsafe for people with uncontrolled high blood pressure, thyroid problems or heart diseases.
• Side effects
  Common side effects include nausea, diarrhea, heartburn, headaches and fatigue. These side effects often decrease with time. Rare but serious side effects include heart, kidney or liver problems, gallbladder or pancreatic disease, or thyroid tumor.
• Cost
  Injectable medicines cost over $1,000 per month without insurance in 2025. Oral medicine may cost less.

Common Myths About Weight Loss Medicine

• "It's the easy way out."
  Obesity is a medical condition, like diabetes or high blood pressure. Just like other chronic illnesses, using medicine to treat obesity is a valid medical approach. It doesn’t mean you aren’t trying hard enough.
• "It’s a miracle pill! No diet or exercise needed."
  Medicine can help reduce hunger, but it doesn’t directly burn fat. A healthy, portion-controlled, low-calorie diet along with regular exercise is important for losing weight effectively.
• "They cause permanent muscle loss."
  There is no strong evidence that weight loss medicine causes permanent muscle loss. Eating protein-rich foods and moving more can help preserve muscle mass.
• "They cause vision loss."
  Vision problems like retinopathy are linked to uncontrolled diabetes and require a yearly eye exam. Since weight loss injections are also used to treat diabetes, any vision loss could be related to diabetes itself, not the medicine.
• "They're dangerous for everyone."
  Most weight loss medicines, especially those used for diabetes treatment, have been safely used for decades.
• "You must take them forever."
  Medicine is a tool to help improve diet and build an exercise routine. Once a healthy weight is maintained, some individuals may stop using weight loss medicine, like stopping treatments for other chronic conditions.
• "Supplements are safer."
  Many weight loss supplements are not effective and may contain harmful ingredients not approved by the FDA.
• "Compounded medicines are easier to get and cheaper."
  Compounded medicine is made in small settings with limited facilities. They may not be safe or effective for weight loss.