Taurine's 1.5–3 g Sweet Spot: What 34 Trials Found on Sugar and BP
Taurine is best known for its anti-aging buzz, but a new meta-analysis of 34 randomized trials looked at everyday health markers instead. Supplementation was linked to lower fasting glucose, HbA1c, triglycerides, cholesterol, blood pressure and inflammation. The benefits clustered at 1.5–3 g per day, and the duration findings were surprising: glucose and lipids improved most after 8 or more weeks, while blood pressure and inflammation looked better in shorter trials. The effects are modest and the trials were varied, so here is what the paper does and doesn't show, and who might want to be cautious.
NMN vs NR vs NADH: One Lifted Endurance, None Fixed Fatigue
A new network meta-analysis of 27 studies and 1,599 adults compared NMN, NR, NADH and nicotinamide, and the results are not what supplement marketing promises. NMN showed a dose-dependent boost in endurance, with a standardized mean difference of 1.02 at the high dose. NADH led for cognition, but mostly in cognitively impaired groups and with a result sensitive to influential studies. The surprise is that no precursor significantly improved perceived fatigue or sleep. Here is how the ranking breaks down, what the limits are, and who should or shouldn't bother.
NMN and Blood Pressure: 10 Trials Pooled, Over-60s Dropped Most
A new meta-analysis in Nutrients pooled 10 randomized trials of NMN, the popular NAD+ precursor, to see whether it affects blood pressure. Across 349 participants, NMN modestly lowered diastolic pressure by about 2.15 mmHg, while the overall systolic change was not significant. In adults 60 and older, systolic pressure dropped by roughly 3.94 mmHg. But the sample is small, the analysis used a common-effects model, and the authors call the evidence preliminary. Here is what the numbers mean, what they don't, and why NMN is no substitute for blood pressure medication.