DIAAS (Digestible Indispensable Amino Acid Score)

Brief · May 17, 2026

Vitamin D for Lower Systolic BP: What 9 Trials Show

Vitamin D does lower systolic blood pressure, but only by 0.7 mmHg on average across 9 studies in 4,952 people. The available reports here do not pin down a precise range around that average, and the effect sits far below the 5.0 mmHg smallest change people usually notice—more like a tiny nudge than a real-world shift.

9 studies

Perspective · May 17, 2026

How Much Protein Per Day by Goal

Most people do not need a complicated protein protocol. They need the right daily target, spread across meals, matched to their goal.

How to

Guide · May 15, 2026

From Cheese to Cold Fronts: L-Tyrosine's Strange Talent for Hard Moments

Better mental performance under stress, sharper focus in tough conditions, and neurotransmitter support

L-Tyrosine

Perspective · May 15, 2026

Biohacking Supplements Need Better Filters

Biohacking made supplements feel less like vitamins and more like a personal operating system. That shift is useful, but it also makes weak claims sound technical.

Trend analysis

Brief · May 15, 2026

Ashwagandha for Women's Sexual Function: What 8 Studies Show

Ashwagandha suggests a noticeable improvement in women's sexual function over about 8 weeks. Across 8 studies involving 239 participants, sexual-function scores rose by 11.84 points; the published combined estimate here does not pin down a precise range around that average, but the gain works out to 2.96 times the 4.0-point smallest change people usually notice—about three times that threshold.

8 studies

Comparison · May 14, 2026

Astaxanthin vs Lutein for eye health antioxidants

For AMD risk/progression, choose lutein with zeaxanthin (AREDS2-level dosing). For screen-related eye strain without AMD, astaxanthin may help symptoms short term; it's not a substitute for AREDS2 [2,8,14–16,18].

Health-conscious readers comparing eye antioxidants