COLLAGEN is a protein, made up of amino acids, found in connective tissue such as cartilage, bones, tendons, ligaments and skin.
As you age, collagen breaks down and it gets harder to produce more.
Most experts recommend consuming between 15 and 30g a day.
There are different types – marine collagen, from fish, is great for skin and bone, while bovine collagen from cows is for joint health.
Here Jane Atkinson looks at ways to get collagen . . .