By Maïté de Jaegher — Co-founder of Suplemint, diagnosed with hypothyroidism
You watch what you eat. You avoid overeating. And yet every evening your belly is bloated like a balloon. In the morning it's fine. But by the afternoon you have to unbutton your pants.
If this scenario sounds familiar, welcome to the club. I lived through this for years. And like you, I thought it was a food problem. I tried eliminating foods, eating less, testing probiotics… Nothing really changed.
Until the day a functional medicine doctor told me something that changed everything: the problem isn't what you eat. It's the speed at which your body digests. And that speed depends directly on your thyroid.
What exactly is the thyroid belly?
In talking with hundreds of clients and the experts we work with at Suplemint, I realized that what is called the "thyroid belly" is actually caused by a combination of three things:
1. Slow intestinal transit.
When the thyroid produces fewer hormones, the entire digestive system slows down. Food stays in the intestine longer, causing fermentation, gas production and constipation. Result: a belly that swells over the course of the day.
2. Water retention.
Hypothyroidism promotes fluid accumulation in tissues, including the abdominal area. It's not fat: it's water. And no diet in the world can fix that.
3. Abdominal fat.
A slowed metabolism promotes fat storage, especially around the waist.
It's this triple combination — stool buildup + water retention + fat — that creates that bloated, uncomfortable belly that traditional diets can't resolve. When I finally understood that, I stopped blaming myself.
Why traditional diets don't work
If your bloated stomach is linked to your thyroid, cutting calories won't fix the problem. Worse: too severe calorie restriction can worsen thyroid slowdown.
This is what the functional doctors we work with constantly remind us: your body interprets restriction as a signal of famine and further reduces thyroid hormone production to conserve energy. It's a vicious cycle. I've been through it myself — the less I ate, the more bloated and tired I became.
Similarly, laxatives are too aggressive, intestinal cleanses only have a temporary effect, and intensive cardio can increase stress on your adrenals.
How to reduce bloating naturally
Here's what made the difference for me, and what our experts recommend:
Support your thyroid at the source.
Iodine and selenium contribute to the normal functioning of the thyroid gland.* When your thyroid works better, your bowel transit naturally improves.
Discover the THYROID® Pack from Suplemint 
Improve T4 → T3 conversion.
T3 is the active thyroid hormone. Nutrients like zinc, L-tyrosine and selenium help with this conversion. It's a point many women are unaware of — and I was totally unaware of it before creating Suplemint.
Protect your adrenals.
Chronic stress directly impacts your digestion. Adaptogens like ashwagandha help maintain balance.
Walk 20-30 minutes after dinner.
It's one of the simplest and most effective ways to get your digestion moving and reduce bloating. Honestly, it's the free tip that changed my evenings the most.
It's exactly this multi-ingredient approach that we integrated into the THYROID® Pack Suplemint with Dr Résimont and our team of experts: iodine, selenium, zinc, ashwagandha KSM 66®, guggul and L-tyrosine — in 4 capsules per day, designed to support overall thyroid function.
Discover the THYROID® Pack from Suplemint
Maïté de Jaegher Co-founder of Suplemint, diagnosed with hypothyroidism
