Turmeric vs Curcumin

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

Should Men Over 50 Take a Multivitamin?

The supplement aisle makes aging look like a formula problem. For most men, it is not.

Buying guide

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

Synergy · May 13, 2026

NAC + Glycine (GlyNAC): Rebuilding Glutathione Together

NAC (a cysteine donor) + glycine give your cells the two missing building blocks to make glutathione—the body's master antioxidant. In older or metabolically stressed adults, randomized trials of the combination (GlyNAC) show improved glutathione status, lower oxidative stress, better mitochondrial function, and gains in physical/cognitive measures over 14–16 weeks; a separate 2-week RCT in healthy older adults found no overall glutathione rise, but did see benefits in a high-oxidative-stress subgroup. Direct head-to-head arms vs NAC-alone or glycine-alone in humans are still missing, so "synergy" is mechanistic/animal-supported rather than conclusively proven. Doses studied are high (often 1:1 ratio; up to ~100 mg/kg/day of each for 16 weeks). Safety is generally good (mainly GI upset with NAC); mind drug interactions like nitroglycerin.

NAC + Glycine