BPA exposure linked to reduced insulin sensitivity in human study

New experimental evidence suggests that Bisphenol A (BPA), a chemical widely used in food and beverage packaging, may reduce insulin sensitivity in humans even at low doses. The findings, published in the Journal of Clinical Endocrinology & Metabolism, represent the first experimental evidence in humans showing that short-term oral BPA administration can impair insulin sensitivity.

In a randomized, double-blind clinical trial involving 40 young adults, participants were exposed to a dose of BPA deemed ‘safe’ by the US Environmental Protection Agency (EPA) lifetime exposure threshold. After five days, the BPA group experienced a 9 percent decrease in peripheral insulin sensitivity, whereas the placebo group showed a slight increase.

Researchers from California Polytechnic State University and Rutgers University noted that while animal and observational studies have previously linked BPA to metabolic issues, this human trial provides direct experimental confirmation. Diabetes researcher Todd Hagobian emphasized the importance of the study, noting that reducing exposure through the use of glass or stainless steel containers could potentially lower diabetes risk.