Original: The incorporation of toxins into the seeds and similar carbohydrate sources also affected the diet, as cyanogenic glycosides such as those found in linseed, cassava, and manioc are made non-toxic through cooking.
Simplified: Another problem was that some seeds and carbohydrate sources are poisonous. Cyanogenic glycosides, which can be found in linseed, cassava, and manioc, amongst others, are made non-poisonous through cooking.