High blood pressure: Opt for low-salt or no-salt bread in your diet to lower your reading

Good sources of potassium include potatoes, sweet potatoes, bananas, tomato sauce (without added salt or sugar), orange juice, tuna (fresh, frozen or tinned, but avoid tuna packed in brine), yoghurt and fat-free milk.

But it warns: “If you have kidney disease, or are taking certain blood pressure medication, a large increase in potassium cold be harmful.

“In this case, avoid taking potassium supplements and check with your doctor before drastically increasing your potassium intake.”