Peanut come from plants, vegetables also come from plants, so
peanuts can be counted as a vegetable somewhat, but peanut oil is
supposedly not that healthy. 
We eat vegetables for a healthy and balanced diet, we eat meat such
as beef also. Beef come from cows, cows eat grass, grass are
plants, anything that comes from plants are most likely vegetables.
So we eat beef, why still need to eat vegetables?
