Immunity guides for UK adults
Vitamin D, K2 and everyday immune support — what the NHS and EFSA actually say.
Vitamin D3 and K2 Benefits for Women
The authorised UK wordings for vitamin D and K are the same for women as for men. What changes is the context: winter dosing, a vitamin...
Can You Take Vitamin D and Iron Together?
Vitamin D is not on any UK list of things to keep away from an iron dose, so no gap is needed. What does compete is...
How Much Vitamin D3 and K2 Should I Take Daily?
The UK advises 10 micrograms of vitamin D a day and caps adults at 100. Converted, 5,000 IU is 25% over that cap and 10,000 IU...
Best Vitamin D3 and K2 Supplements in the UK: How to Choose One
In ten healthy women, a 420 microgram dose of MK-4 was undetectable in serum in every subject; the same dose of MK-7 peaked at six hours...
The Best Time to Take Vitamin D: What Actually Changes Absorption
A fat-containing meal raised the 12-hour plasma vitamin D3 peak by 32% against a fat-free one, and no trial has shown one hour of the day...
Vitamin D Foods: What Actually Contains It, and How Much
Official UK food composition data, portion by portion: grilled herring gives 19.2 micrograms of vitamin D and grilled salmon 8.3, while one egg gives 1.7 and...
Is Vitamin D and D3 the Same? D2 vs D3, Explained
Vitamin D3 is one form of vitamin D, not another name for it. What separates D2 from D3, why a UK trial found D3 raised blood...
Do Gummy Vitamins Work? What the Evidence Actually Shows
A randomised trial found vitamin D3 gummies produced about twice the blood exposure of the same dose in tablets. The absorption question, the sugar question and...
Vitamin K2 and Vitamin D3: How They Work Together
Vitamin D3 raises how much calcium you absorb; vitamin K2 activates the proteins that decide where it goes. What each one is legally allowed to claim...
Vitamin D Deficiency in the UK: Symptoms, Causes & What to Do
Vitamin D deficiency is common in the UK, and the main reason is simple geography. Britain sits too far north for sunlight to make vitamin D...