Like most things, the dose is key. Flax oil will probably cause cancer at high levels, just like fish oil. In small doses, it might function as a safer alternative to chemotherapy. But nobody's ever worried about the fact that Americans eat way too much PUFA - getting 10% of calories from soybean oil alone.
If many studies have shown that 1-2% omega-6 is more than adequate, and in fact 0.5% or less might be "adequate", why aren't people warned about the risk of over-doing them?
http://www.fatsoflife.com/pufa/article.asp?nid=1&edition=arch&id=266 |