How Does Semaglutide Work for Weight Loss?

Semaglutide is a peptide-based medication in a class called GLP-1 receptor agonists, short for glucagon-like peptide 1. It was first developed for people with type 2 diabetes. A version of it is now FDA-approved for chronic weight management in adults. It is part of a larger family of weight loss injections that has changed how doctors treat obesity and weight-related health problems.

GLP-1 is a natural hormone your gut releases after you eat. It tells the pancreas to release insulin when blood sugar is high, and it signals to the brain that you are full. Semaglutide mimics that signal and lasts far longer in the body than the natural hormone. Because of this longer half-life, a single injection works for a week, which is what makes weekly dosing possible.

Semaglutide works on two fronts.

• It regulates insulin. When the body does not produce or use enough insulin, it cannot use sugar well, which leads to blood sugar swings and unsteady energy. Semaglutide stimulates a glucose-dependent release of insulin, so levels become more consistent. As insulin steadies and blood sugar levels out, hunger decreases, and the body can draw on energy it has already stored.
• It reduces appetite. Semaglutide curbs hunger and cravings, so most people eat less without feeling as though they are fighting their appetite all day. It also slows how quickly the stomach empties, which prolongs the feeling of fullness.

The medication does the groundwork, and your habits determine the outcome. Dr. Monika Kiripolsky prescribes semaglutide as part of a plan that includes healthier eating and regular exercise, not as a replacement for them.

Results vary, but the research is encouraging. In the STEP 1 trial, adults on semaglutide alongside a lifestyle program lost an average of nearly 15 percent of their body weight over 68 weeks. In other words, a person who weighs 200 pounds might lose roughly 30 pounds over about a year and a quarter. Your result depends on your starting weight, your dose, how consistently you take it, and the lifestyle changes you make.

The loss is gradual. You may not notice a change in the first 4 to 8 weeks, since treatment usually begins at a low dose that is raised over time. After a dose increase, many patients begin to notice a slimming effect. If you are worried at any point about how treatment is going, contact your doctor so the plan can be reevaluated.

Dr. Kiripolsky considers semaglutide for adults who meet two main criteria.

• A BMI of 30 or higher and a desire to boost or safely speed up weight loss.
• A BMI of 27 or higher with a weight-related condition, such as high cholesterol or hypertension.

Candidates should be in good overall health, have realistic expectations, and be willing to commit to eating better, maintaining an exercise routine, and making positive lifestyle changes.

Semaglutide may not be a good fit if you have a history of depression, digestive problems, kidney disease, type 1 diabetes, or pancreatitis. It is also not permitted during pregnancy, and anyone who plans to become pregnant must wait several weeks after stopping treatment. Semaglutide also carries a warning for people with a personal or family history of certain thyroid tumors, so your doctor will ask about that history. A full medical review before you start is essential.

Your first visit is a consultation. Dr. Kiripolsky takes your complete medical history, performs a physical examination, and orders the blood tests she needs to confirm that you are healthy enough to begin. If you are a good candidate, you discuss your treatment options and schedule follow-up visits so she can track your progress and adjust your dose.

Treatment itself is simple. Patients administer a weekly injection at home, using single-use pre-packaged syringes. The usual injection sites are the lower stomach, the thigh, and the upper arm. Inject once a week, around the same time of day, for the best results. Dr. Kiripolsky customizes the plan to each patient and aims to keep doses as low as possible while still reaching your goals.

Preparation matters, too. Before you start, build a healthy routine you can maintain, including exercise for at least 30 minutes on most days of the week, steady hydration, a consistent sleep schedule, and stress management. Tell your doctor about your allergies, daily medications, and any herbal remedies, because semaglutide can interfere with how some of them work.

Semaglutide can cause dizziness, nausea, fatigue, and headaches. Starting at a low dose and increasing gradually helps limit these effects, which is why doctors do not begin at the full dose. Digestive complaints are the most common, and eating smaller meals and staying hydrated can help. Report anything severe or persistent to your doctor right away, including intense abdominal pain, which can signal a serious problem.

In the STEP 1 trial, nausea and diarrhea were the most common side effects, and they were usually mild to moderate and short-lived.

A good consultation leaves you with clear answers. If you are considering semaglutide in Beverly Hills, bring questions such as these.

• Based on my health history, am I a candidate, and what are my specific risks?
• What dose will I start on, and how quickly will it increase?
• Which side effects should I expect, and which ones mean I should call you?
• How will we track my progress, and how often will I come in for follow-up visits?
• What is the plan if I want to stop, and how do I keep the weight off afterward?
• How will this affect the other medications and supplements I take?

Weight loss medication works best when it sits inside a plan that includes nutrition, movement, sleep, and stress, and when your doctor monitors you along the way.

You may have also heard of tirzepatide. Like semaglutide, it has produced substantial weight loss in clinical trials. The difference is that it mimics two hormones, GLP-1 and GIP (gastric inhibitory polypeptide), which both help regulate blood sugar and appetite. Your doctor can explain how the options compare and which suits your health history.

Often some weight returns after treatment ends. Rapid weight loss treatments commonly lead to some regain when they stop, which is why the habits you build during treatment matter so much. Keep eating well, stay active, and talk with your doctor about how to handle the transition. The goal is a lifestyle that holds your results with or without the medication.

Losing weight can change how your face and skin look, especially when the loss is fast. Facial volume can decrease, which sometimes creates a hollow or aged appearance that people call "Ozempic face." Because Dr. Kiripolsky is a board-certified dermatologist and fellowship-trained cosmetic and laser surgeon, she can help with both the weight loss and these changes. You can read about how she approaches Ozempic face. Loose skin after weight loss is a separate concern, and skin tightening is one treatment the practice offers for it. Some patients also explore body contouring for stubborn areas that remain, and the GLP-1 injections before-and-after gallery shows patient results.

Dr. Kiripolsky sees patients in Beverly Hills and Newport Beach, and you can book a consultation to find out whether semaglutide is right for you.