Protein powder works by providing your body with a supply of amino acids for cell growth throughout your body.

In most cases however, constipation while on a protein rich diet is likely the result of a lack of good fiber in your diet.

What is in protein powder? Protein powders contain powdered protein from a source such as milk, eggs, beef or plants.

Not all protein powders are vegetarian. However protein powders come from a great many sources and many of them are suitable for vegetarians and vegans.

No, protein powder is not bad for your kidneys. There is no existing evidence that too much protein can damage kidney function in adults.

So what should you look for in a good protein powder? Select a protein powder that contains no added sugar and has as few ingredients as possible.

Protein powders are concentrated forms of protein that are naturally sourced from animals and plants.

Protein powder requirements depend on your goals and physical activity.

We would not recommend using protein powder after it's expiration date, as protein efficiency is compromised after this date.

It's reasonably expensive and difficult to have too much protein powder. However it is possible to take more protein than your body needs.