Insulin is a hormone made by the pancreas. It is responsible for making the body’s cells absorb glucose (sugar) from the blood.

What it does: As a component of red blood cells, iron transports oxygen and carbon dioxide to and from cells. Also vital for energy production.

Deficiency Signs: Anaemia, e.g. pale skin, sore tongue, fatigue, listlessness, loss of appetite, nausea, sensitivity to cold.

Best food sources: Pumpkin seeds, parsley, almonds, prunes, cashew nuts, raisins, Brazil nuts, walnuts, dates, pork, cooked dried beans, sesame seeds, and pecan nuts.

Isoflavones are naturally occurring compounds – many act as phyto-oestrogens. An example of an isoflavone is Soya Isoflavones.