Python Blood Study Sparks Buzz as Potential Alternative to GLP-1 Weight Loss Drugs

What if weight loss could come from something as unusual as python blood? Scientists from University of Colorado Boulder, along with researchers at Baylor University and Stanford University, have found a natural compound that may help control hunger. In a study published in Nature Metabolism, they explained that pythons can go for months without eating and still stay healthy. This is because of a molecule called pTOS, which increases after they eat and helps them feel full for a long time. Tests in mice showed weight loss without muscle loss or major side effects.

Unlike many current weight loss drugs that can cause stomach problems and discomfort, this new approach may work more naturally. Scientists also found small amounts of this compound in humans, which means it could be useful in future treatments. A company called Arkana Therapeutics is now working to turn this research into safer weight loss medicines that may also help prevent muscle loss with age.

REFERENCE: Xiao, S., Wang, M., Martin, T.G. et al. Python metabolomics uncovers a conserved postprandial metabolite and gut–brain feeding pathway. Nat Metab (2026). https://doi.org/10.1038/s42255-026-01485-0