A study led by UC Irvine has found that prenatal exposure to "forever chemicals" (PFAS) is linked to acute lymphoblastic leukemia, the most common childhood cancer. The study compared newborn blood samples from babies born from 2000 to 2015 in Los Angeles County to 125 children later diagnosed with acute lymphobastic leukemia and 219 cancer-free kids. Seventeen different “forever chemical” primarily PFOA and PFOS were found in the samples, which were linked to increased risk of cancer. However, the study's findings should be interpreted cautiously. The researchers also identified 26 additional PFAS chemicals, which have not been well-studied.