Topic
What the research actually shows on vitamin D, B12, prenatals, and more, without the supplement-aisle hype.
Vitamins
FDA validated immunoassays at the recommended 30 micrograms of biotin. Reported intakes reach 10 mg — over 300 times that — and troponin can read falsely low.
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Vitamins
A 2026 trial gave one group twice the B12 of the other for 16 weeks. Both improved. Neither beat the other, and that is the useful finding.
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Vitamins
A Cochrane review found regular vitamin C does not stop you catching colds. In one specific group it halved the rate, and that group is not you.
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Vitamins
The early and advanced signs of low B12, who is most at risk, why nerve damage can become permanent, and how it is diagnosed and corrected.
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Vitamins
Most hair-growth supplements only work if you're deficient. The nutrients that genuinely matter, why biotin is overrated, and what really regrows hair.
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Vitamins
Biotin is the go-to 'hair vitamin,' but does it grow hair if you're not deficient? What the evidence really shows, who it helps, and a serious lab-test warning.
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Vitamins
Multivitamins are the most popular supplement, but do they do anything? What large trials really found, who genuinely benefits, and who's wasting money.
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Vitamins
Vitamin K2 helps steer calcium into bones and away from arteries. What the evidence genuinely supports, MK-4 vs MK-7, the best food sources, and the warfarin catch.
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Vitamins
Tiredness, aches, low mood: the real signs of low vitamin D, why symptoms alone can't confirm it, who's at risk, and what actually fixes a deficiency.
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Vitamins
Do prenatal vitamins grow your hair or boost your health if you're not pregnant? What they actually do, the real risks, and who should skip them.
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Vitamins
Vitamin D shots and pills both raise your levels, but they are not interchangeable. Who actually needs an injection, and why steady daily dosing beats mega-doses.
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