Statement on the Effects of Sports Supplements and Protein Powders on Skin and Metabolism at PAU Hospitals

19.06.2026
Prof. Dr. Ahmet Metin, Head of the Department of Dermatology and Venereology at Pamukkale University (PAU) Hospitals, stated that the unconscious use of sports supplements and protein powders may particularly increase acne, hair loss, and allergic reactions.

In his statement, Prof. Dr. Ahmet Metin, Head of the Department of Dermatology and Venereology at PAU Hospitals, said: “Sports supplements and protein powders have become widely used in recent years, especially among young people. However, the belief that these products are completely harmless is not correct. Clinical observations and scientific data show that the unconscious and uncontrolled use of these supplements may have some adverse effects on the skin, hormonal balance, and overall health. In particular, it is known that milk-based proteins such as whey protein can trigger acne in some individuals by increasing insulin and growth factor levels in the body. This may lead to persistent and severe acne outbreaks on the face, back, and chest. In some individuals, acne decreases when the supplement is discontinued and increases again when it is resumed. Sports supplements available on the market may not only contain protein. In addition to substances such as vitamins, minerals, and creatine, they may also contain undeclared additional substances not listed on the label. In particular, high doses of B vitamins, iodine, and selenium may lead to problems such as acne, hair loss, and nail weakening. A more serious risk is anabolic steroids that may be illegally added to some products. These substances may cause significant problems such as severe acne, hair loss, stretch marks, and hormonal imbalance in the skin. In addition, plant-based protein sources such as pea, soy, and lupin may cause allergic reactions in some individuals and, rarely, severe allergic shock.”

“Long-term and high-dose unconscious use may disrupt hormonal balance and place additional strain on the liver and kidneys. Therefore, they should not be considered harmless.”

Stating that long-term and high-dose unconscious use of sports supplements and protein powders may disrupt hormonal balance and place additional strain on the liver and kidneys, and therefore should not be considered harmless products, Prof. Dr. Ahmet Metin continued as follows: “Attention should be paid to the quick-result promises seen in social media and advertisements. Terms such as natural or herbal do not always mean safe. It is important for individuals experiencing unexplained acne, hair loss, or skin problems to inform their doctors about all supplements they use. In conclusion, protein powders and sports supplements can be safer only when used when necessary, at the correct dose, and under expert supervision. Otherwise, unconscious use may lead to serious health problems. It should not be forgotten that the basis of muscle development is balanced nutrition and regular exercise. Supplements should be considered only as supportive products. I strongly emphasize that the public should act consciously on this issue and avoid uncontrolled product use.”

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