It's been drummed into our heads that butter is bad for us, however the theory that cholesterol in food increases heart disease is actually being revised.

Cholesterol is vital for the body - it supports the brain, helps produce vitamin D and without it, the body cannot make certain hormones, like oestrogen, cortisol and testosterone.

Cholesterol-lowering spreads on the other hand could be bad for us, with the plant sterols that are contained in them said to reduce the body's absorption of certain vitamins.