Can Eating Too Much Protein Harm Your Health? Dietitian Answers

Protein has emerged as one of the most popular dietary additions. Fitness enthusiasts almost obsess over meeting their daily protein requirements. A high protein diet is, as a result, followed by many. However, there is a thin line between ‘high’ protein and ‘excess’ protein intake. While a high protein diet is good for health, excess of it can cause more harm than good. This article will talk about the side effects of too much protein in diet.

To understand this better, we reached out to Ms Chitra BK, Chief of Dietetics, KIMS Hospitals, Electronic City, Bengaluru.

Can Eating Too Much Protein Harm Your Health? 

Ms Chitra says that protein is an important dietary component that helps in muscle repair, building immunity, producing hormones, and maintaining general good health. However, the expert warns that it could be detrimental to one’s health if consumed in excess, depending on someone's age and overall health condition. On this note, she lists the ways with which excess protein intake can harm your health:

Kidney Health

One main health risk associated with the consumption of excess protein is kidney health. While in normal cases, high protein intake would not pose any risks, this would mean additional work for the kidneys to filter out all the byproducts. In cases where one already has kidney disease or weak kidneys, this could hasten the disease process.

Liver Health

High protein intake could have implications for the health of the liver as well. It makes it harder for the body to break down proteins in case the person has some form of liver disease, since their liver would not be functioning properly. However, for healthy individuals, the impact of high protein intake on liver damage is minimal.

Gut Health

Another potential problem associated with high protein intake is digestive disorders caused by insufficient intake of fibre because of a lack of vegetables, fruits, and whole grains in one’s diet. The lack of fibre in one’s body can lead to such problems as constipation, bloating, poor gut flora, and dehydration.

Heart Health

Another issue is the source of protein. Consumption of too many processed meat products and too much fatty animal protein might lead to increased levels of saturated fats and salt, and this will harm the heart in the long term.

Study on Side Effects of a High Protein Diet 

A 2013 study, published in the ISRN Nutrition journal, says that high-protein diets have gained popularity for weight loss and muscle building. The recommended dietary allowance (RDA) for adults is only 0.8 grams of protein per kilogram of body weight per day. Therefore, eating excess protein can lead to several health risks. 

The study notes that a major concern is that too much protein can impact bone health and calcium balance. This is because high protein intake generates a large amount of acid in the body. This causes the kidneys to excrete more calcium in the urine. To buffer this acid, the body then actively breaks down bone tissue. As a result, this can lead to bone loss and an increased risk of fractures. 

The study added that long-term consumption of high-protein diets, especially the ones rich in red meat, is also associated with an increased risk of various cancers, including colon, stomach, and breast cancer. Moreover, excessively high protein intake has been linked with liver function disorders, causing elevated transaminase enzymes. To summarise, some studies suggest that these diets can also lead to the progression of coronary artery disease by increasing lipid deposition and inflammation. The study concludes that based on current scientific literature, it is reasonable to consume protein within the RDA for healthy adults.  

Tips To Safely Consume Protein

Ms Chitra says that it would be best for most people to maintain a balance. She adds, “The requirement of protein varies from person to person due to age, exercise, health issues, and so forth; however, excess does not mean better.”

Shedding light on how to safely consume protein, the expert says, “Strive to incorporate various protein sources like beans, dairy, eggs, fish, lean meat, soy foods, nuts, and seeds. It should also involve getting sufficient fibre and water intake.”

According to the Mayo Clinic, another aspect you need to keep in mind is that if you want to try a high-protein diet, you need to choose your protein wisely. It suggests staying away from processed meats, and picking nutrient-rich protein sources such as:

• Soy protein.
• Beans and other legumes such as lentils.
• Nuts and seeds.
• Fish.
• Lean chicken with no skin.
• Lean beef and pork.
• Low-fat dairy products.
• Egg whites.

ALSO READ- Which Vegetables Have The Highest Protein? Dietitian Answers

Conclusion

Protein is an important nutrient for muscle repair and overall well-being. However, consuming too much of it can silently strain your kidneys, gut, and long-term heart health. To safely eat protein, make it a part of your balanced diet. You can pair lean, high-quality protein sources with adequate hydration and fibre-rich foods. Moreover, sticking to your personalised daily requirements, instead of mindlessly overindulging, is the best approach to meet your protein goals and maintain lasting health.