Vitamin D Supplements Show Only Modest Benefit Against Respiratory Infections in Young Children
A Cochrane review of 107 RCTs finds vitamin D may slightly cut ARI-related doctor visits in under-5s, but evidence remains low-certainty.
Supplements, peptides, nootropics, and bioactive compounds for health optimization
130 articles
A Cochrane review of 107 RCTs finds vitamin D may slightly cut ARI-related doctor visits in under-5s, but evidence remains low-certainty.
New research argues stress-induced testosterone drops are a central brain adaptation, not testicular failure — with major clinical implications.
A 135-patient pediatric study finds obesity and short stature dominate BBS, while hypogonadism and hypothyroidism remain rare in childhood.
A major review finds clinical proof for NAD+ decline with age is sparse, and human trials of NR and NMN show limited efficacy.
A product review breaks down the evidence tiers for four popular longevity supplements and rates the best commercial stacks.
A systematic review of 9 studies finds FSH improves sperm count and motility in normogonadotropic men, but pregnancy benefits remain unproven.
A leading aging researcher audits NMN, urolithin A, spermidine, and more — revealing what actually works and what falls short.
A Stanford drug development expert breaks down why most peptide compounds circulating online lack the safety and efficacy data required for human use.
A novel two-stage fermentation process produces record levels of PQQ and single cell protein using agricultural waste, cutting production costs.
Expert reviews compare leading senolytic and NAD+ supplement brands on ingredients, evidence quality, and value.
New expert reviews compare NMN and NR head-to-head, ranking top products by purity, absorption, and clinical evidence.
A 7-day trial shows GlyNAC boosts glutathione in blood, liver, and muscle while protecting intestinal structure and reducing liver inflammation under heat stress.