This review found that your gut microbiome directly influences skin health through your immune system — when gut bacteria are out of balance, it can trigger or worsen skin conditions like acne, eczema, psoriasis, and rosacea. The exact mechanisms aren't fully understood yet, but the connection is real enough that researchers are exploring probiotics, prebiotics, and dietary changes as potential treatments for skin diseases.

This was a systematic review that analyzed existing research on how gut bacteria, diet, probiotics, and antibiotics affect both gut and skin health, rather than a new experiment.

Funding not disclosed in abstract