Does Too Much Whey Protein Cause Any Side Effects?

Health and Nutrition


Whey protein is highly popular amongst fitness enthusiasts and athletic individuals. It is the protein present in whey, the water that oozes and separates during the cheese-making process. This liquid is further distilled, refined and then dried to derive the form of whey protein powder. Being a popular protein supplement, it is used to boost athletic performance and enhance the individual’s strength and agility. It comes in three forms depending upon the concentration and composition- concentrate, isolates, and hydrolysate.


Whey protein is generally recommended to people who want to build muscle, increase their metabolism or get into a better shape. Being a complete source of protein, it contains all the essential amino acids which are the building blocks of our body. It helps in increasing muscle mass and strength. It also aids in weight loss by keeping the stomach full for a long time, thus eliminating the need to eat junk food.


Whey protein does not generally pose any problem when consumed in moderate and sensible amounts. However, lactose-intolerant people should steer clear of this protein powder. Moreover, if one continuously depends on whey protein and indulges in over-dosage, then they may face problems like stomach pains, cramps, lack of appetite, a feeling of nausea, increased bowel movements, bloating, headache and extreme fatigue.

Most of the side effects that can follow the overconsumption of whey protein results in digestion-related issues. This happens because not everyone can digest whey protein very smoothly and might end up experiencing gas or stomach cramps. Major cases of indigestion occur amongst people who are lactose-intolerant as lactose is the chief component present in whey. Thus it is advisable for such individuals to stay away from whey protein.

While there is no evidence of risks against pregnant women, it is better to stay on the safer side and avoid consuming whey protein when one is pregnant. Apart from that various researches have proved that only people allergic to cow’s milk (consisting lactose) should not ingest whey protein. The side effects may show up in the form of inflammation and skin reactions.

Individuals should always consult their nutritionist and understand whether or not whey protein is the right fix for their health. Whey protein is a healthy supplement for individuals as long as it is consumed in moderation. One may safely intake whey protein while keeping the amount consumed in check.

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