13/02/2026
Bone health and protein intake
Calcium is often a go to for ensuring adequate bone density in the elderly. Which yes it is, however it is a part of a whole matrix which makes up bones.
There are many nutrients that are often overlooked. More posts exploring these to follow.
Up 1st is...... Protein
Protein is well know for building muscle, with all the protein powders out there it's a wonder why!?
It's not as well known that protein intake has a direct link to bone strength and flexibility (super important for preventing fractures) Hard bones don't handle strong impact well, like a fall, which is common in older age.
Protein make up around 50% of bone volume in the form of collagen. This is the framework which calcium and other minerals adhere too.
A greater intake of protein increases the absorption of calcium in your intestines.
The intake of protein stimulates the production of Insulin-like Growth Factor (IG-F 1). IGF-1 is a hormone (signaling molecule) that promotes bone formation and reduces bone break down.
It is important that protein is taken with adequate calcium to get the above benefits to bone health.
As we age our stomach acid production declines, which can in turn reduce appetite. Low stomach acid makes it hard to break down foods.
Protein is also required for stomach acid production and a low intake (less than .8g/kg of body weight per day) can cause reduced stomach acid. So it's a continuing cycle, low stomach acid, poor digestion, low protein intake which contributes to low stomach acid.
Calcium is apart of the picture, not the whole picture. Food and supplements are only going to help if you're absorbing them.
How much protein are you having per day?
I aim for 1.5g/kg of body weight.
Photo credit: Kelvin Shelwell
A few yummy vegetarian sources of protein are in the picture, including edamame and almonds. A variety of protein sources help boost your intake.