As the winter starts to draw in and there is less daylight to enjoy, it's important to keep your immune system strong.

The immune system is a collection of cells which help our bodies fight bacteria and viruses, and vitamins play a vital role in maintaining it.

But can you get enough vitamins from your diet, or are multivitamins the way to go?

Dr Doireann O'Leary, health blogger and GP with MyCorkGP, joined us for our weekly medical slot to discuss this.