They’re in water, anything that uses that water, and cumulatively collected.

Not that I advocate eating whale, but people who eat whale are very likely to have high PFAs and should limit their consumption

Almost all of us have them in our bodies. They disrupt the immune system, particularly the parts that help remove cancer cells. Cancer of the liver, panceas and I forgot which other… (testicular maybe?) are the most common cancers to get from pfas exposure

Women/birthing people pass their pfas on to their children