Semaglutide for Weight Loss: Risks, Benefits, Side Effects, and What to Know
- Gerardo Valdes, MD
- Jul 18, 2024
- 4 min read
Updated: Feb 28
Semaglutide for weight loss has been pushed heavily as one of the newest solutions in the fight against obesity. In my many years treating patients for weight loss, I have rarely seen a medication promoted this aggressively by the pharmaceutical industry. It is often presented as a simple answer: one shot a week, no dieting or exercise needed, and the pounds come off. That is exactly why I believe patients should slow down and take a closer look. Semaglutide is the active ingredient in Ozempic, Wegovy, and Rybelsus. It has become one of the most talked-about weight loss medications on the market. While many people are asking whether semaglutide for weight loss is effective, the more important question is whether it is the right choice for a specific individual.

At our clinic, we are very selective with semaglutide. We typically consider it only for patients who have failed other weight loss treatments, have blood sugar abnormalities, have a significant amount of weight to lose, or have other medical issues that could improve with weight reduction. In these situations, we believe the potential benefits must clearly outweigh the risks.
What Is Semaglutide for Weight Loss?
Semaglutide was originally developed for patients with type 2 diabetes. During its development, it became clear that many patients were also losing weight. Because of that, it is now widely used in conversations about medical weight loss. The weight loss effect has been observed not only in diabetic patients, but also in prediabetic and nondiabetic individuals. That is one reason semaglutide for weight loss has become so popular.
How Does Semaglutide Work for Weight Loss?
For patients wondering how semaglutide works for weight loss, there are a few main mechanisms believed to be involved. First, semaglutide slows gastric emptying, meaning food moves more slowly through the stomach. As a result, patients may feel full sooner during meals and may eat smaller portions. Second, semaglutide appears to reduce appetite by affecting areas in the brain associated with calorie intake. That can lead to lower food consumption overall. These effects help explain why semaglutide for weight loss has generated so much attention.
Is Semaglutide Safe for Weight Loss?
This is where I believe patients need to be cautious. Like any newer medication that becomes widely used, the studies are still limited and the safety profile has not been fully determined. That is one of the reasons I do not believe it should be handed out casually or used indiscriminately.
At our clinic, we do not view semaglutide as a universal answer to obesity. We view it as a treatment that may be appropriate for a select group of patients under the right circumstances. Currently, there are other safer alternatives available to anyone who considers using semaglutide.
Semaglutide Side Effects Patients Should Know
When discussing semaglutide side effects, there are several concerns that need to be part of the conversation. One of the most concerning issues is the reported incidence of thyroid tumors in rodent studies, including medullary thyroid carcinoma. It is not known whether the same outcome occurs in humans, but the results reflected on the study were dependent on dosage (the higher the dose, the higher the risk of cancer) and length of treatment (the longer the rodents were on the medication, the higher the risk of cancer). These findings are serious enough that they should not be ignored. Another concern is gastrointestinal slowing. In some individuals, gastric motility may slow down enough to create major digestive issues and, in more serious cases, possible intestinal blockage requiring hospitalization. Other semaglutide side effects may include nausea, vomiting, diarrhea, constipation, abdominal pain, pancreatitis, and hypoglycemia. For that reason, I do not believe semaglutide for weight loss should be treated like a harmless shortcut.
Why We Are Selective with Semaglutide
In our clinic, we believe there are patients who may benefit from semaglutide, but that does not mean everyone should be placed on it. We are selective because every treatment decision should involve a serious discussion about risk, benefit, medical history, and alternative options.
Semaglutide Is Not a Substitute for Diet and Exercise
No matter which treatment a patient chooses, whether it is a weight loss pill, injection, or surgery, it still needs to be combined with a healthy diet and exercise plan. That is one of the biggest misconceptions around semaglutide for weight loss. Even if it helps a patient lose weight, long-term maintenance still depends on lifestyle habits. Without that foundation, maintaining results becomes much more difficult once treatment ends.
Final Thoughts on Semaglutide for Weight Loss
Semaglutide may help certain patients lose weight, and in carefully selected cases, it may have a role in treatment. But in my opinion, it is not the miracle answer that many advertisements make it seem to be.
Patients should understand how semaglutide works for weight loss, be aware of semaglutide side effects, and think carefully about whether the treatment is truly appropriate for their medical profile.
At our clinic, we believe in being selective, cautious, and honest about both the benefits and the risks.
If you are considering semaglutide for weight loss and want a medical evaluation to determine whether it is appropriate for you, contact South Florida Weight Loss & Wellness to schedule a consultation.




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