Vitamin and mineral deficiency

Iodine deficiency is the most common cause of thyroid disease. Learn about the causes and how to ensure you are getting enough iodine.

Iron is essential for your body. Low iron levels can cause anaemia. Read about how iron deficiency can lead to health problems and how it is treated.

Magnesium deficiency is when your body doesn't get all the magnesium it needs. Read more about magnesium deficiency symptoms, diagnosis and causes.

Potassium deficiency can affect your body, including your muscles and cause cardiovascular symptoms. Read about the causes of potassium deficiency.

Vitamin A deficiency is when you don’t get enough vitamin A in your diet. Your body needs a certain amount of vitamin A to function well.

Vitamin B deficiency can happen when you don’t get enough of the right nutrients. Learn about the symptoms of vitamin B (including B12) deficiency.

Vitamin C deficiency can happen when you don’t have enough fruits and vegetables in your diet. Learn more about vitamin C deficiency and scurvy here.

Vitamin D deficiency occurs when your body doesn't get enough vitamin D to function well. Learn about the symptoms and how to get enough vitamin D.

Vitamin K deficiency can stop your blood from clotting properly and weaken your bones. Read more about how to prevent and treat vitamin K deficiency.

Zinc deficiency is when your body does not have enough of the mineral zinc. Read more about zinc deficiency symptoms, diagnosis and causes.