Most nutrition advice comes with caveats and counter-arguments. B12 doesn't. It's one of the very few points where plant-based dietitians, the NHS and the Vegan Society all say the same thing: if you're not eating animal products, you need a reliable source, and food alone probably isn't it. That's unusually clear-cut for this field, so[…]

"Why am I always tired?" is one of the UK's most googled health questions — and if you are juggling work, family and a phone that never stops, the answer is usually "life". But nutrition plays a real supporting role, and a few nutrients are officially recognised in the UK for their contribution to reducing[…]