Unfortunately our food these days is deficient in a lot of the essential nutrients we need, and contains an array of chemicals instead, so supplementing is always a good idea.
Quality natural supplements are made using ingredients in forms that are closest to what our bodies recognise, some cheaper versions use fillers, or types of nutrients that are incompatible with our body's systems so they just get 'filed away' in our bodies and not utilised.
Goto www.nutricentre.co.uk for trusted reliable products, they can give advice on what to use aswell.