Category: Gut & Immunity

With food or not, fridge or cupboard, and why a huge CFU number is not the quality signal you think.

Who is genuinely at risk, why you should test before supplementing, and how to reduce side effects.

What large studies found, who still benefits, and why targeted supplements often beat a multivitamin.

Vegans, over-50s and metformin users: who genuinely needs B12, which form, and how much.

Vitamin D, zinc and vitamin C compared — what actually supports normal immune function.

D2 vs D3, recommended amounts, why testing helps, and the upper limit worth respecting.

Multi-strain probiotics, prebiotics and synbiotics compared — matched to your goal.

The plain-language difference between prebiotics and probiotics, and how they work together.

A plain-language intro to probiotics, why strains matter, and what research supports.