Immunity
Vitamin D and Immunity: Does It Really Help Against Colds?
What the research shows about vitamin D and respiratory infections, who a supplement genuinely helps, and where the promises run ahead of the evidence.
3 min read
#supplements
16 articles
Longevity
NMN and NAD+: Do 'Anti-Aging' Supplements Work?
What NAD+ is and why it declines with age, what the studies of NMN and NR supplements actually showed, and whether they are worth paying for in the name of longevity.
3 min read
Supplements
Ashwagandha: What the Research Says About Stress, Sleep and Strength
Ashwagandha is a popular adaptogen. What studies actually show about its effect on stress, anxiety and sleep, where the evidence is weaker, and who should avoid it.
3 min read
Supplements
Curcumin and Turmeric: Does the Supplement Work, and For What?
How curcumin differs from the turmeric spice, why it is poorly absorbed, which conditions have evidence of benefit (and which only promises), and what about safety.
3 min read
Supplements
Collagen Supplements: Do They Work and Who Benefits?
What happens to collagen after you swallow it, what the skin and joint research shows, how types and doses differ, and why protein plus vitamin C is often cheaper and just as good.
5 min read
Immunity
Zinc for Colds: Does It Work, Which Form and How Much
What the trials show about zinc and cold duration, which forms and doses make sense, who is at risk of deficiency, and why high doses threaten copper status and smell.
6 min read
Immunity
Vitamin C and Colds: What the Research Shows
Vitamin C doesn't prevent colds in most people, but cuts their length by about 8%. We unpack the myths, doses, the absorption ceiling, and zinc.
8 min read
Supplements
Vitamin B12: Who Needs It, Deficiency Signs, How to Take It
Who actually needs vitamin B12, how to spot deficiency by symptoms and tests (B12, homocysteine, MMA), and which forms and doses to choose. A guide for vegans and at-risk groups.
10 min read
Supplements
Probiotics: What Is Proven and What Is Just Sold
Strain specificity, CFU labelling, the 2018 trials that reversed the pediatric gastroenteritis story, and when probiotics are genuinely dangerous.
13 min read
Supplements
Creatine: How to Take the Most Studied Supplement
How creatine works, why monohydrate beats every pricier form, whether loading is worth it, the honest size of the effect, and where the kidney myth began.
15 min read
Supplements
Iron and Ferritin: When Supplements Help and When They Harm
Iron deficiency starts long before anaemia, ferritin drops first and lies during inflammation, and iron taken without testing can do real damage.
14 min read
Supplements
Magnesium: Forms, Doses and Who Needs It
What magnesium does, how much you need by age and sex, why a blood test tells you almost nothing, and how citrate, glycinate and oxide really compare.
12 min read
Supplements
Omega-3: How to Choose a Supplement and Whether You Need One
What omega-3s are actually proven to do, how much EPA and DHA you need daily, how to decode a supplement label, and who should skip the capsules entirely.
9 min read
Supplements
Vitamin D: Doses, Blood Levels and Who Actually Needs It
How to read a 25(OH)D result, which doses work for prevention and for correcting deficiency, who should be tested, and where the overdose risk begins.
10 min read
Sleep & Recovery
Does Melatonin Work, and Who Actually Needs It?
Melatonin is a timing signal, not a sedative. The honest effect size, the dose and timing that matter, the supplement quality problem, and who really benefits.
13 min read
Supplements
Do Multivitamins Do Anything for Healthy People?
The USPSTF and large trials found no benefit of multivitamins for healthy adults. Who genuinely needs supplements, and where upper limits actually bite.
11 min read