The little-known vitamin deficiencies that are making you feel so tired or out of breath. No, it's not ageing or stress, says DR EMILY LEEMING - and these are the cheap, easy tweaks that'll solve it ○

Fatigue, brain fog, some vague tingling in your hands and feet - many might assume these to be a sign of ageing. But these can be red flags that you're short of key vitamins and minerals.