'Painless bumps' on the skin could be sign of high cholesterol – where they may appear

HDL – high density lipoprotein – is good cholesterol. This helps improve overall heart health.

Meanwhile, LDL – low density lipoprotein – is the type of cholesterol which forms as a plaque in the arteries, increasing blood pressure.

It is key to have high levels of HDL and low levels of LDL.

Fortunately, there are several ways to lower levels.