What are the benefits of collagen?

Collagen's strongest evidence is for skin, meaning firmer and better-hydrated skin, and for joints, with promising early signs for bone. Those are exactly the tissues that suffer as oestrogen falls in menopause, which is why it is having a moment with women in mid-life.

Collagen is the scaffolding protein in skin, joints, bone and connective tissue, and we make less of it with age. For women that decline speeds up sharply at menopause: studies suggest skin can lose a substantial share of its collagen in the first few years after the final period, because oestrogen helps maintain skin collagen and bone. Supplementing will not stop that clock, but it can help offset some of it.

Trials of hydrolysed collagen peptides, which is collagen broken into small absorbable fragments, show modest but reasonably consistent gains in skin elasticity and hydration, some improvement in joint comfort, and early evidence for bone density when taken over many months. It is one of the better-supported supplements in a field full of weak ones, and it is relevant to both menopause joint pain and the skin and hair changes of menopause. What it realistically does, and does not:

• Skin — better elasticity and hydration over weeks, the best-supported benefit
• Joints — modest relief in achy, exercise-stressed joints for some women
• Bone — early but encouraging evidence for density over a year or more, especially with vitamin D and resistance training
• Hair and nails — weaker than the marketing claims, though nails may firm up

How to use it: around 10 g a day of hydrolysed collagen peptides for at least 8 to 12 weeks is the typical effective dose, since collagen works on a slow timeline and consistency beats intensity. Marine and bovine peptides both work, so choose on price and preference, and pairing it with vitamin C may help your body put it to use. The powder is tasteless enough to stir into coffee or porridge, and it is very well tolerated.

One honest caveat: simply eating enough total protein does much of the same structural work, so collagen is a useful add-on for skin and joints rather than a substitute for a solid diet. If you are barely meeting your protein target, fixing that comes first.