Flaxseeds contain beneficial omega-3 fatty acids and a compound known as linamarin which is turned to hydrogen cyanide in the body, and even prussic acid on some occasions. Both compounds are highly dangerous and may even be fatal in bigger amounts. The NFA suggest avoiding ground flaxseed, but recommends whole flaxseed in amounts of 1-2 tablespoons per day.
At the moment, flaxseeds are sold around the world without any kind of warning. As it’s a natural product and is not regulated in the USA, it might be better to avoid it for the moment. If you love them in your meals and smoothies, at least use whole flaxseeds.
Source:
- www.svt.se
- www.livsmedelsverket.se