Protein Guide: Benefits of Shakes, Whey & Lean Sources

Protein shakes can be beneficial for hair and muscle growth, but too much protein may cause kidney damage. Identify the best lean sources like beans and eggs while understanding the differences between whey and casein for your diet.

How Fast Does Opened Protein Powder Lose Potency?

Published Jul,08 2011 | By Jason Jensen

While you may have heard that protein powder can lose its potency after it's opened, that is not true. Protein powder is just as effective after you open it as it was when you purchased it. However, protein powder may spoil if it is not stored properly or used before the expiration date.