What is Whey protein?
A byproduct of making cheese is whey protein. Fitness lovers turn to this supplement because it is packed with vital amino acids that support muscle regeneration. Its quick digestion makes it a favorite for recovering after a workout. It is generally regarded as safe when taken in approved dosages. Some people are concerned about the effect it may have on liver function, particularly when taken excessively or by individuals who already have liver disease.
Can whey protein affect liver health?
Current research does not conclusively link whey protein to enlargement of the liver in healthy individuals. A study published in Healthcare in 2024 found no adverse effects on the liver when whey protein was consumed in recommended doses by healthy individuals.
That being said, people with pre-existing liver diseases, such as cirrhosis or non-alcoholic fatty liver disease (NAFLD), should consult a doctor before taking whey protein supplements. For them, the liver’s ability to process high amounts of protein may be compromised, potentially leading to liver complications.
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Liver enlargement and high protein intake
Overconsumption of protein may be the true cause of liver enlargement rather than the protein itself. Overindulgence in any form of protein that includes whey—can cause the liver to become overworked. The liver helps us with the metabolism of proteins. The problems might arise if it is required to handle more than the body requires. The long-term misuse of protein supplements may result in problems such as elevated liver enzymes; however, these instances are uncommon and usually associated with overuse.
There is no proof that whey protein can damage or expand the liver in people who consume it at the daily recommended quantities which is around 0.8 to 1.6 grams of protein per kilogram of body weight.
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Whey protein is generally safe but more important is to consume it in the recommended amount only. Health problems can arise from overindulging in protein, whether through diet or supplements. Before beginning any new supplement regimen, people with pre-existing liver problems should always speak with their doctor.
