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Information and advice on heart conditions & stroke disease, everything from prevention to illness for your wellbeing.
Read our glossary of related words with definitions by clicking on the alphabet below.
Heart Index - O
Oedema
Excessive accumulation of fluid in the intercellular spaces of tissue.
Oestrogen
A hormone that stimulates changes in female reproductive organs, induces oestrus and promotes the development of other female secondary sexual characteristics.
Oesophagus
That part of the alimentary canal between the pharynx (throat) and the stomach.
Osteoporosis
Porosity and brittleness of the bones caused by the loss of calcium from the bone matrix.
