"Vitamin E is a proven antioxident and may help in fighting cancer and heart disease" Is there anything ambiguous about this claim

Yep quite a bit.
What do YOU think ?

Curlyben is not rude, but is very smart. He attended school and did all his homework and graduated. Now it is time for Joecool to do his own homework.

Hint: one word in that sentence you posted, Joecool, makes all the difference.