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Whey protein or protein supplement is obtained from whey, the liquid milk portion divided from curds during cheese production.

People have used whey protein as a dietary and fitness supplement for many years. This protein may boost the nutrient profile of some meals and promote the human immune system. Further, it might help one manage type 2 diabetes, achieve weight loss, and cope with asthma, although the evidence is weak. Irrespective of several health aids, there exist some concerns regarding its safety since certain people suggest that it can destroy the liver kidneys and lead to osteoporosis. Therefore, you should not ignore these side effects because folks have focused on its benefits and overrode this aspect. Keep reading this blog to know the different side effects of taking excess whey protein.

It might lead to excessive fat intake

In various instances, whey protein supplements contain excess carbohydrates in sugar form. However, certain supplements with whey protein carry fats and load them to the body when you take the supplements. This implies that an individual can have weight increment that affects the body negatively. Further, weight gain can occur on consuming excess whey protein instantly.

It may lead to the formation of kidney stones

Whey protein consumption increases kidney stone creation risks. Although it might not cause directly, medical doctors explain that this protein worsens people already having that condition. Fortunately, you can remedy this problem by taking enough water and dietary fiber.

It has some digestive problems

Whey protein contains lactose, and people sensitive to it might have difficulty digestion. This does not mean digestion problems affect only people with lactose sensitivity. In case your digestive system is functioning well, choose whey protein concentrate because it contains low lactose amounts.

It might cause Gout

Even though there is no evidence of whey protein causing gout directly, it worsens the problem for people with the condition. Consequently, you should consult a medical professional before starting whey protein consumption in case gout condition is noticed in your family. This is because genes might play a role in increasing the risk of this condition.

It could lead to other kidney problems

Excessive whey protein consumption might cause renal complications, particularly when you have ever experienced them. Overconsumption of protein-rich food spikes kidney pressure, forcing the renal system to overwork in filtering blood than expected. In fact, one study found that this response is normal and not a major concern. Nonetheless, this has not been concluded that protein-rich foods damage the kidneys because there is no reliable backing. Research shows that their protein intake does not jeopardize kidneys for healthy people. However, such diets are harmful to people with kidney disease. Medical practitioners recommend watching whey protein amounts being eaten and still consulting experts before consuming it. By so doing, you lower the risks of long-term kidney damage.

Liver problems

Taking excess whey protein worsens liver problems, implying that you should take whey protein moderately always. However, the evidence does not show the adverse effects of protein on healthy people. Surprisingly, your liver requires proteins for repairing itself and converting fats into lipoproteins which assists in eliminating fats from it. Additionally, talking to your doctor before using them is advisable. This is because it might interfere with your medication in case you are treating a liver condition.

It may increase heart disease risk

Medical professionals claim that taking excess whey protein can be dangerous to an individual with a heart condition because it might cause abnormal heart rhythms, cardiac arrest, and complete heart malfunctioning, which later causes death. As such, whey protein should be taken in moderation.

It increases blood acidity

Consumption of excess whey protein spikes blood pH. Scientists show that metabolism becomes low because the kidney becomes ineffective whenever the protein is in excess in the blood. In turn, it elevates blood acidity.

It might promote osteoporosis development

Osteoporosis is a disorder associated with excessive consumption of whey protein. This is particularly dangerous when feeding on this protein for an extended period. Notably, excess whey protein intake causes bone mineral imbalances, consequently causing the depletion of bone mineral density. This shows that as much as protein may help with bone development, its excessive amounts may be detrimental.

It might cause weakness and fatigue

Some individuals experience digestion problems after consuming proteins. This causes them to encounter adverse effects like excessive body weakness and fatigue. Further, they might experience gas, cramps, and bloating since some body systemscannot break down or process the protein consumed.

It can set your body on ketosis

Consumption of whey protein can cause ketosis development. Ketosis is a condition that occurs when the blood contains unusual amounts of body ketones. When following a high protein and low carbohydrate diet, the body fats are burnt to produce energy. While ketosis is generally safe, it makes the liver experiences great pressure, which may be destroyed over time.

It might lead to Diarrhea

Diarrhea can still result from excessive consumption of whey protein. This condition links with the effects caused by proteins on the human digestive system. Further, traces of blood can occur in that stool, particularly among infants.

It might cause swelling of lips, mouth, and throat

These symptoms are related to allergic reactions towards whey protein consumption. Even though the condition might not have pain, it makes you uncomfortable. In case you are a victim, seek medical attention to ensure there is no extreme damage caused.

It might cause nausea

Protein causes nausea in most consumers, and the same might happen with excess consumption of whey proteins. In some cases, individuals may experience vomiting. The remedy to this problem is reducing the amount of protein consumed.

It might cause nutritional deficiencies and constipation

High protein consumption leads to constipation for some people with lactose sensitivity or intolerance, delaying gut movement. Nonetheless, constipation might arise when individuals take fewer vegetables and fruits to increase wheyprotein, particularly during a low-carbohydrate diet. Interestingly, vegetables and fruits provide fiber which contributes to stool formation and enhances controlled bowel movements. If you constipate, confirm whether vegetables and fruits are sufficient in your diet. Substituting whole foods with this protein might elevate nutrient deficiency risks. Additionally, whole foods, specifically vegetables, and fruits, are nutritious and contain different essential minerals required for body health. Thus, regular eating a balanced diet while taking whey protein is recommended.


Many people take whey proteins without experiencing adverse effect where it helps with weight loss, treating diabetes, and boosting the immune system. Nonetheless, whey protein is unhealthy for people with lactose sensitivity and allergy. Such individuals might have digestive issues, kidney problems, liver damage, gout development, and other negative side effects.

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MS, University of Tartu Sleep specialist Using the acquired academic and professional experience, I advise patients with various complaints about mental health - depressed mood, nervousness, lack of energy and interest, sleep disorders, panic attacks, obsessive thoughts and anxieties, difficulty concentrating, and stress. In my free time, I love to paint and go on long walks on the beach. One of my latest obsessions is sudoku – a wonderful activity to calm an unease mind.

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