In the 17th century, the smog and naturally dull English weather caused many children to have rickets (twisted, malformed limbs). Rickets became known as "the English disease."
This vitamin is one of the antioxidant nutrients (the others are vitamins A and C and the minerals selenium and zinc). Vitamin E has had many names, one of the earliest was "the anti-sterility vitamin.
Vitamin K is found in fatty foods. Nature has provided enough fats in foods containing fat-soluble vitamins to ensure their absorption without eating additional fat.