Many people can’t use whey protein. For some, it might be an ethical or dietary choice as they wish to live a vegan or vegetarian lifestyle. For others, it could be an intolerance issue. Lactose intolerance is one of the most common food sensitivities that exists. Whey protein is made from dairy, so if you suffer from lactose intolerance it might not be a good option. Soy protein is dairy free and vegan friendly.

Whey protein is more rapidly absorbed than soy protein.10 However, soy protein is a complete protein with all of the essential amino acids. Because of its slightly slower absorption rates compared to whey protein, it could have the potential benefit of keeping you feeling full for longer.

One benefit of Soy protein over whey protein is that it contains no cholesterol, making it ideal for those who are concerned about their cholesterol levels.

Growth hormone is a hormone inside us that decreases with age. It has many roles in the body which include cellular growth and metabolism. Arginine and lysine are amino acids which are needed help prelease growth hormone.

So, if you’re looking to top your levels up, then soy protein has high amounts of arginine and lysine which could have an acute effect on growth hormone levels.