Learn

What you need to know about bone health

Read the evidence-based guides to looking after your bones for life, including supplements, diet, exercise and everyday lifestyle choices.

How much calcium do you need after 40 — and how much is too much?Two numbers matter: your recommended daily intake and the upper limit that almost no supplement brand mentions.
Calcium supplements after 40 — do you actually need one?Whether you need one depends on what you already get from food. Elemental calcium, carbonate versus citrate, and four questions to ask before you buy.
Why calcium needs vitamin D — and what happens when it doesn’t have enoughGetting your calcium right while your vitamin D is low affects how much you absorb. How the two work together, and why counting one is not enough.
Strength training after 40 — why your bones need more than calciumBones respond to what you ask them to do. Why resistance and weight-bearing work belong alongside calcium and vitamin D, and what actually counts as enough.
Vitamin D after 40 — how much do you need, and can you take too much?Vitamin D helps your body absorb calcium and keep it in balance. It’s unusually hard to know how much you’re getting, and easy to take too much.