Whey protein is from the leftover liquid when you make cheese. It was a n unusable waste product until some genius figured out that you could sell it to bodybui

Whey protein is from the leftover liquid when you make cheese. It was a n unusable waste product until some genius figured out that you could sell it to bodybuilders. Absorption of casein is not such an issue, but dumping a 100g of lactose into your digestive system if you are not lactose tolerant will really mess with you. You will find out very quickly if you are lactose tolerant or not.