Whey protein is a popular diet supplement among people of all ages. Baby formulas include it, as do nutrition shakes for the elderly. Weight-loss supplements contain whey powder as an appetite suppressor, yet young men buy whey protein powder by the gallon in hopes of building muscle mass.
Much of whey protein's appeal is in its texture. Whey is the liquid left behind when milk is turned to cheese. The protein in whey is one of the two main proteins in milk, the other is a protein called casein. (When an acidic substance such as vinegar is mixed into milk, these two proteins will separate -- the casein proteins glob together to form solids called curds, leaving the whey as a liquid.)
Whey protein may show up in your favorite baked goods or ice cream as a way to replace the consistency of fat without the actual fat.
Like all proteins, whey protein is made of building blocks called amino acids. Protein in the body is primarily used for muscle growth and to repair tissues. When people digest food, they break down the proteins into amino acids, and then use those amino acids to build new proteins.
Health Benefits :
- Losing weight - according to one study, published in Nutrition & Metabolism, people who took a specialized whey fraction (Prolibra™, high in leucine, bioactive peptides and milk calcium) "lost significantly more body fat and showed a greater preservation of lean muscle compared to subjects consuming the control beverage.
- Anti-cancer properties - Promising results were published in the journal Anticancer Research for the use of whey protein concentrate (WPC) and glutathione modulation in cancer treatment.
- High cholesterol - according to a study published in The British Journal of Nutrition, "there was a significant decrease in total cholesterol and LDL cholesterol at week 12 in the whey group compared with the casein (group).
- Asthma - whey protein could improve immune response in children with asthma. One study, published in the International Journal of Food Science and Nutrition, found that children with asthma who were supplemented with whey for one month had an improved cytokine response.
- Lowering blood pressure and reducing risk of cardiovascular disease - research published in the International Dairy Journal found that beverages that were supplemented with whey protein significantly reduced blood pressure in patients with hypertension, their risk of developing heart disease or stroke was also lower.
Side effects
Some people who are allergic to milk may be specifically allergic to whey.In moderate doses whey protein doesn't generally cause any adverse events.
However, consuming severely high doses can cause:
- Stomach pains
- Cramps
- Reduced appetite
- Nausea
- Headache
- Fatigue
XOXO
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