Diet, gut microbes and puberty timing: animal findings leave human questions open
A review of human and animal studies linked diet and gut microbes with puberty timing. Delayed puberty after fatty-acid supplementation was reported in animals; comparable human benefits were not established.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The review proposes connections between diet, gut microbes and puberty timing. It reports that short-chain fatty-acid supplementation delayed puberty in animal studies, while human findings showed microbial differences across ethnic and dietary groups. These findings do not establish that changing children's diets or giving supplements changes puberty timing, and the abstract offers no estimate of a human intervention effect.
The abstract does not report study counts, evidence certainty or human intervention effects. Mixing human and animal literature limits how directly its mechanistic conclusions can inform decisions about children's diets or puberty.
A proposed biological pathway
The review links high-fat, high-sugar diets with reduced microbial diversity and fewer short-chain fatty acids, small molecules produced by gut microbes. It discusses connections with brain processes involved in puberty, but provides no pooled estimates or study-level human outcomes.
Separate animal and human findings
Animal studies reported later puberty after fatty-acid supplementation, alongside reduced inflammation in a brain region involved in puberty. Human findings instead emphasized differences in microbial profiles across ethnic and dietary groups. The animal intervention result should remain separate from those human observations.
The original publication
Dietary modulation of pubertal timing: gut microbiota-derived SCFAs and neurotransmitters orchestrate hypothalamic maturation via the gut-brain axis.
You X, Yang W, Li X et al.
J Endocrinol Invest · 2025
- PubMed ID
- 40526265
- Record checked
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