How Does Semaglutide Work for Weight Loss?

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Written By Steve Brandon

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August 23, 2024

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Semaglutide | Weight Loss

Table of Contents

how semaglutide works for weight loss showing a woman before and after weight loss with semaglutide, including scientific elements like dna, atom, and chemical molecules, illustrating the science behind semaglutide's effectiveness

In the quest for effective weight loss solutions, semaglutide has emerged as a powerful tool, offering hope to those struggling with obesity and weight-related health issues. Originally developed as a treatment for type 2 diabetes, semaglutide has garnered attention for its remarkable efficacy in promoting weight loss. But how exactly does it work and how long does it take semaglutide to work?

What is Semaglutide?

Semaglutide is a medication primarily used to treat type 2 diabetes and manage long-term weight loss, particularly through GLP-1 weight loss mechanisms. It mimics the action of a natural hormone called glucagon-like peptide-1 (GLP-1 ) but has been modified for enhanced effectiveness. Semaglutide can be administered through a subcutaneous injection or taken orally.

illustration of glucagon-like peptide 1 (GLP-1) hormone showing where GLP-1 is formed in the body

It is marketed under the brand names Ozempic and Rybelsus for diabetes treatment and Wegovy for weight loss. Semaglutide works as a GLP-1 receptor agonist. Common side effects include nausea, vomiting, diarrhea, abdominal pain, and constipation. Approved for use in the United States in 2017, semaglutide has become widely prescribed, with over 8 million prescriptions in 2021, making it one of the top 100 most commonly used medications.

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The Science Behind How Semaglutide Works?

Semaglutide works by targeting the complex network of hormones, neurotransmitters, and brain circuits that regulate appetite and metabolism. Here’s a closer look at how it aids in weight loss:

semaglutide works by influencing brain circuits controlling appetite and metabolism with an image of a brain highlighting the circuits involved

Activating GLP-1 Receptors

Semaglutide is a type of medication known as a GLP-1 receptor agonist. GLP-1, a natural hormone in the body, plays a key role in controlling insulin release, glucose metabolism, and appetite. By activating GLP-1 receptors, Semaglutide significantly influences the body’s ability to manage weight.

Enhancing Fullness and Reducing Hunger

GLP-1 receptors are found in parts of the brain that manage appetite. When Semaglutide stimulates these receptors, it increases feelings of fullness and decreases hunger, making it easier to make healthier food choices and consume fewer calories—essential factors in effective weight loss.

Slowing Stomach Emptying

Semaglutide also slows down how quickly the stomach empties, which helps you feel full longer after eating. This can reduce cravings and make it easier to avoid overeating.

Modulating Reward Centers in the Brain

Semaglutide influences the brain’s reward systems, which are linked to the pleasure we get from eating certain foods. By reducing the appeal of high-calorie, indulgent foods, Semaglutide helps you stick to your dietary goals.

woman holding an orange and a water bottle with circles illustrating increased metabolism and fat breakdown, accompanied by the heading 'boosting metabolism and promoting fat breakdown

Boosting Metabolism and Promoting Fat Breakdown

Beyond controlling appetite, Semaglutide also affects how your body uses energy and burns fat. Many users report significant weight loss results after Semaglutide treatment, often noticing changes within the first few weeks.

Increasing Basal Metabolic Rate: Semaglutide has been shown to raise the number of calories your body burns at rest, helping you burn more calories throughout the day, even when you’re not active.
Promoting Fat Breakdown: Semaglutide enhances the process of lipolysis, where stored fat is broken down and used for energy. This helps your body tap into its fat reserves, further supporting weight loss.

Overall, Semaglutide helps you eat less by making you feel full and less interested in food, while also helping your body burn more calories and fat, making it a powerful tool for weight loss. When combined with healthy lifestyle changes, it can lead to even faster and more sustainable results.

Why Is Semaglutide for Weight Loss Effective?

infographic explaining why semaglutide is effective for weight loss with points on FDA approval, enhanced metabolic health, appetite suppression, better blood sugar control, and non-surgical weight loss option

FDA-Approved Effectiveness: Semaglutide is FDA-approved for weight loss. Participants lost an average of 15% of their body weight.
Enhanced Metabolic Health: In addition to promoting weight loss, Semaglutide improves overall metabolic health, lowering the risk of heart disease and aiding in blood sugar control.
Appetite Suppression: Semaglutide helps control hunger by mimicking GLP-1, a natural hormone that regulates appetite.
Better Blood Sugar Control: For individuals with type 2 diabetes, Semaglutide also helps regulate blood sugar levels.
Non-Surgical Option: Semaglutide offers a non-invasive alternative to surgical weight loss procedures like bariatric surgery.

Conclusion

Semaglutide is a highly effective, FDA-approved weight loss option, especially for those with obesity. By mimicking the hormone GLP-1, it reduces appetite, boosts metabolism, and promotes fat breakdown. Many users see results within weeks, with long-term use leading to sustained weight loss and better overall health when combined with a healthy lifestyle.

FAQs

Is oral Semaglutide effective for weight loss in non-diabetics?
Yes, oral Semaglutide is effective for weight loss in non-diabetic individuals. Clinical studies have demonstrated that it can substantially reduce weight when combined with lifestyle changes like diet and exercise.

How much Semaglutide do you need to take to lose weight? The typical starting dose for weight loss is 0.25 mg once weekly, gradually increasing to a maintenance dose of 1.7 mg or 2.4 mg weekly, depending on individual tolerance and effectiveness. Your healthcare provider will adjust the dosage based on your specific needs.

How can you get Semaglutide for weight loss? Semaglutide for weight loss can be prescribed by a healthcare provider. You can obtain a prescription through an in-person consultation with your doctor or through online telehealth services that offer weight management programs.

How long does it take for semaglutide to suppress appetite? Semaglutide usually starts to suppress appetite within a few weeks, with more noticeable effects often seen after about 12 weeks of treatment.

How does Ozempic help you lose weight? Ozempic, which contains Semaglutide, helps with weight loss by mimicking a hormone that regulates appetite. It reduces hunger, helps you feel fuller for longer, and slows down digestion, leading to decreased calorie intake and weight loss.

Who should (and shouldn’t) use semaglutide for weight loss?

The FDA recommends Wegovy if you:

- Have a BMI of 27 or higher with a weight-related condition (e.g., high blood pressure, Type 2 diabetes, or high cholesterol).
- Have a BMI of 30 or higher.

Avoid semaglutide if you have: