The Cheap Vitamin Linked to Stronger Legs as You Age
A large British study of more than 5,000 adults aged 48 to 92 found that people with optimal blood vitamin C (50 µmol/L or higher) walked faster and stood from a chair more quickly than those with low levels. Women also had stronger height-adjusted grip, while men showed no grip link. Food-based vitamin C showed associations only in women, and not in a tidy pattern. The design is cross-sectional, so it can't prove vitamin C causes better function. Here's what the numbers show, what they don't, and why your blood level may be worth checking.
3 g Arginine + 500 mg Vitamin C: Testosterone Up 26% in Lifters
Arginine has long been written off as an overhyped nitric oxide booster, but a new randomized trial adds a twist: pair it with vitamin C. In 50 male bodybuilders, 3 g of arginine (split into three doses) plus 500 mg of vitamin C for 45 days significantly raised testosterone and VO2max versus placebo, and body fat dropped. Growth hormone, cortisol and nitrogen balance did not significantly differ between groups. It's a cheap stack worth watching, but it comes from one small trial, and higher testosterone doesn't guarantee more muscle.