Some health bodies recommend taking daily vitamin D supplements during autumn and winter Grace Cary/Moment RF/Getty Images
Regularly taking a high dose of vitamin D may slightly lower the rate at which people with high blood sugar levels progress to having type 2 diabetes, an analysis of existing trials has found. But high-dose vitamin D can also lead to kidney stones and other health problems, so people should only take such a course after discussing it with their doctor, researchers have said.
In type 2 diabetes, which usually starts in midlife and is linked …
