Vitamin D and immunity: what the trials actually show
A modest infection-risk reduction in deficient people, null results in everyone else — the large randomized trials on vitamin D and immunity, weighed claim by claim.
Sports
The latest sports journalism from the publications of the VUGA Enterprises Network — refreshed around the clock. Every headline opens the full story at its source.
Page 4 of 4 · Updated 9 Oct 2026, 18:23 UTC
Sleep hygiene for early-morning training: what helps at 5 a.m.
Early training starts cost athletes up to 90 minutes of sleep per night, studies show. The schedule and light fixes with real evidence.
NAC is back on supplement shelves. Here's what changed, and what didn't
The FDA's 2024 guidance ended NAC's four-year legal limbo — availability changed, evidence didn't. The policy story, the trial record, and what users should know.
Weigh-in reform in combat sports
Combat sports weigh-in reform explained: rapid weight loss risks, morning weigh-ins, walking-weight programs — what the evidence shows changed.
DMHA, higenamine and the hidden stimulants on banned lists
DMHA and higenamine appear in supplements labeled natural, but sport bans them and the FDA disputes their legality. How hidden stimulants work.
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