Whey protein is derived from milk and is the most commonly used protein supplement. It contains nonessential and essential amino acids, as well as branch chain amino acids (BCAA). Amino acids are the building blocks of protein. The body does not make essential amino acids, therefore they must be obtained through diet. Nonessential amino acids can be synthesized by the body. Whey is easily abosorbed by your muscles and is extrememly safe to use. Whey protein is not appropriate for those who have a milk allergy or who cannot tolerate lactose.
There are two categories of whey protein powdersóconcentrate and isolate. The concentrate form is more widely used, easier to find and less expensive. It contains approximately 30 to 85% protein. Whey isolate is a higher quality protein and is, therefore, more expensive. It contains more than 90% protein. Whey isolate is more easily abosorbed by the body and contains less fat and lactose.
Benefits of whey protein:
- Helps boost immunity
- Optimal source of amino acids
- Enhances muscle recovery after workouts and helps prevent muscle breakdown
Soy protein is derived from soy flour. Of all the various vegetable proteins, soy is the most complete protein. Similar to whey protein, soy protein has two types, the concentrate and the isolate, with the isolate being the purer, more expensive form. Soy protein is highly digestible and is comparable to milk and meat as a protein source. Soy protein is ideal for those who have dairy allergies, but should not be taken by those who have a soy allergies.
Benefits of soy protein:
- Helps to improve nutritional value of foods
- Lowers cholesterol
- Reduces the risk of heart disease
- Suitable for vegans