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Here's the annoying thing about vitamin D deficiency: you can't feel it. Not at first. It creeps in over months, and the symptoms — tiredness, aching muscles, low mood, getting every cold going — overlap with about fifteen other things...

Type "vitamin D dosage" into Google and you'll find answers ranging from 400 IU to 10,000 IU daily. That's a 25x difference. It's like asking how fast to drive on the motorway and getting answers from "20mph" to "just floor...

Every September, the supplement aisle rearranges itself. Suddenly it's all elderberry, echinacea, and things with "immune" on the label in aggressive fonts. Most of it has the evidence base of a horoscope. Vitamin D is the exception. The research is...

Vitamin D gets credited with a lot. Immune health. Mood. Energy. Bone strength. At some point it'll probably get credit for fixing the housing crisis. But the emerging research on vitamin D and biological ageing is actually interesting — and...

Do vitamin D gummies actually work, or are they just expensive sweets dressed up in a lab coat? It's a fair question. Your mum takes tablets. Your PT drinks a powder. Someone on TikTok dissolves drops under their tongue. And...

If you've done a juice cleanse, you know the feeling on day two. Clear head. Less bloat. The noise that surrounds eating three meals a day suddenly gone. It's real and the reason it works is that a well-designed cleanse...