MAGNESIUM
Helps control blood pressure and blood sugar.
Signs you need it: Migraine, chocolate cravings, anxiety, irritability, fatigue, insomnia, irregular heartbeat and lack of concentration.
Try: Eating dark leafy greens, fish, nuts and seeds, or BetterYou’s Magnesium Oil range (from £9.95; hollandandbarrett.com).
VITAMIN D
Boosts your immune system, bones, skin and mental health.
Signs you need it: Aches, pains and tiredness.
Try: Getting 20-30 minutes of sun on your forearms and face in the middle of the day three times a week*, eating oily fish or taking cod liver oil. Try Holland & Barrett’s Cod Liver Oil Caps (£2.99 for 60).
IRON
Helps transport oxygen throughout the body.
Signs you need it: Fatigue, tiredness, your skin is paler than usual, you get short of breath easily.
Try: Eating red meat,…