Locations:
Search IconSearch

Does My Stomach Actually Shrink When I Lose Weight?

The short answer from a gastroenterologist

Stomach size feels smaller

Q: Does my stomach actually shrink when I lose weight?

A: Not exactly, but here’s why you might feel full. Our stomachs have a reflex called receptive relaxation: As food enters your stomach, the muscles relax and expand out to accommodate more volume. In fact, your stomach can expand up to five times its volume after a meal as compared to before.

Advertisement

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy

Some studies suggest that neurons surrounding and within our stomach wall actually control receptive relaxation. After losing weight, they may cause our stomachs to have less elasticity. This is also related to hormonal changes that affect our feelings of hunger and thirst, namely changes in the hunger hormones ghrelin and leptin.

All these factors can control whether you feel hungry or full, but none of them are related to any changes in the size of your stomach (even though it might feel like it).

Gastroenterologist Maged Rizk, MD

Advertisement

Cleveland Clinic icon
Health Essentials logo
Subscription icon

Better health starts here

Sign up for our Health Essentials emails for expert guidance on nutrition, fitness, sleep, skin care and more.

Learn more about our editorial process.

Related Articles

Person cleaning their belly button with a cotton swab
April 28, 2025/Skin Care & Beauty

The Ins and Outs of Cleaning Your Dirty Belly Button

Make sure you’re being gentle and using a fragrance-free, mild soap to clean your belly button

Person holding up a barbell with healthy foods on each end
April 3, 2026/Weight Loss

Counting the Number of Calories in a Pound of Fat

Some still turn to a 500-calorie deficit to lose weight, but that approach isn’t always effective or healthy

Hands prepping salmon with lemon and spices
January 14, 2026/Diabetes & Endocrinology

Is It Possible To Increase Your Metabolism?

Lifestyle changes can bring a slight metabolic boost and health benefits

Person holding drink and leisurely walking dog outside
January 9, 2026/Weight Loss

Positive Steps: How Walking Can Help You Lose Weight

A consistent walking program is an effective way to drop pounds and lose body fat

An uncapped GLP-1 injector on counter
December 18, 2025/Weight Loss

Does Ozempic Work for Weight Loss?

This diabetes medication can treat obesity, but it’s not for people who just want to drop a few pounds

Person using kettle ball at gym
December 17, 2025/Weight Loss

This Is How To Lose Weight the Right Way — and Keep It Off

Successful weight loss takes a long-term commitment — build a healthy lifestyle you can stick with

Person pouring homemade trail mix from jar into their hand
December 15, 2025/Weight Loss

22 Smart Snack Ideas To Help You Lose Weight

Opt for snacks that have protein, fiber and healthy fats to prevent cravings and keep you feeling full and satisfied

Person standing on beach in bikini, with sagging skin on butt and upper legs
December 3, 2025/Diabetes & Endocrinology

How To Avoid ‘Ozempic Butt’

Weight loss may cause loose, sagging skin and muscle loss to your rear

Trending Topics

Person walking outdoors, looking at smartphone

What Does It Mean To Be ‘California Sober’?

This ‘harm reduction’ approach to sobriety involves subbing one substance for another — a method that isn’t backed by research

Caregiver applying makeup to smiling teen

Is It OK for Your Kid To Wear Makeup? 5 Things To Consider

Educate your child about body image, expectations and skin care first

Person in long-sleeve swimwear, scratching at their itchy wrist

Is That a Chlorine Rash? What Your Skin Is Telling You

A true chlorine allergy is extremely rare — it’s far more likely that you have a damaged skin barrier

Ad