Most bodybuilders regard whey protein as the best protein supplement. But its side effects have
long been an issue of debate; most experts say that there are still no known adverse side effects to whey. The possible side effects of whey are relatively linked to overconsumption.
Allergic reaction caused by intolerance to lactose- The most common known side effects of whey are linked to people who are lactose intolerant. Lactose intolerance is the difficulty of digesting lactose; form of sugar found in milk. Since Whey is derived from milk, lactose intolerant people might develop allergic reaction.
Excessive protein in the blood will give your kidney a hard time to metabolize it, in turn makes blood acidic.
As mentioned above, when the blood turns acidic your body’s response is to turn it back to basic, in which case; calcium is the most basic element in the body to be utilized. The calcium in the bones will be released to turn the blood back to basic resulting to insufficient calcium deposits on the bones leading to osteoporosis that will later cause joint problems.
Calcium is a known predisposing factor to kidney stones, still related to what was mentioned earlier; when your body uses calcium to reverse the effect of blood acidity, the unused calcium will be deposited in the kidneys causing possible formation of kidney stones.
Elevated protein consumption could bring your body in a state called ketosis; characterized by elevated levels of ketones in the blood. Ketosis is considered a very dangerous state since it causes too much stress on the liver that might lead to liver damage.
Up to this day there is still not enough evidence to substantiate the possibility of its side effects due to overconsumption. Truth of the matter is anything in excess will never do you good. Healthy living means everything in moderation; same truth applies to whey protein consumption.