Harvard scientists warn of hidden dangers in protein powders
Scientists from Harvard in the United States are raising concerns about the potential dangers associated with the use of protein powders, which may include harmful substances.
Protein powders have become popular dietary supplements, particularly among physically active individuals aiming to increase muscle mass.
In addition to consuming high-protein foods such as chicken, steak, fish, and eggs, protein powders are often used as a supplemental aid to help achieve fitness goals. However, Harvard scientists have pointed out hidden dangers associated with their use.
Kathy McManus, director of the Department of Nutrition, emphasizes that she does not recommend using protein powders unless in special cases and under supervision.
Research conducted by the non-profit organization Clean Label Project has shown that many protein powders contain heavy metals like lead, arsenic, cadmium, and mercury, as well as bisphenol-A (BPA), pesticides, and other contaminants linked to cancer and other illnesses.
"People with dairy allergies or trouble digesting lactose [milk sugar] can experience gastrointestinal discomfort if they use a milk-based protein powder," says McManus.
In some cases, BPA levels exceeded acceptable standards by up to 25 times.
Alternatives to protein powders
McManus suggests there are many ways to provide the body with protein without resorting to powders. Plant-based alternatives include lentils, chickpeas, tofu, and nuts.
However, for older adults recovering from cancer treatment or dealing with wound-healing issues, chemical-free protein powders may be beneficial.
Excessive protein in the diet can strain the kidneys, especially in individuals with existing kidney conditions. Therefore, it is always advisable to consult a dietitian or doctor.
