Celiac disease, IBD, H. pylori, acid-blocking meds and weight-loss surgery can all lead to hair shedding. How the gut really affects your hair, and what to test.

Resistant starch is a type of carbohydrate that “resists” digestion in the small intestine and travels to your colon, where

Low vitamin D shows up again and again in people with hair loss, but that does not mean supplements will regrow hair. What the research actually shows and who should test.

H. pylori is a common stomach bacteria behind most ulcers and a lot of gastritis. Who should get tested, how testing works, and what treatment involves.

Zinc carnosine is one of the more evidence-backed supplements in the gut-lining category — specifically studied for supporting and repairing

Acne pills, blood thinners, antidepressants, hormones and weight-loss drugs can all trigger shedding. The common culprits, why it happens, and why you should not just stop taking them.

Long-term acid blockers like omeprazole can lower iron, B12 and zinc absorption, all linked to hair shedding. What the evidence shows and what to do about it.

Mastic gum — a resin from the Mediterranean mastic tree — has been chewed for stomach complaints for thousands of

Both an underactive and an overactive thyroid can thin your hair. The clues to look for, which blood test to ask for, and how hair recovers once it is treated.

Bone broth is sold as a gut-healing superfood. What is actually in it, what the evidence says about gut health and heartburn, and how to make it worth drinking.