No, the condition is almost always related to a hormonal disturbance and occurs in males with excess female sex hormones in the bloodstream. Cause unknown but some feel that disease plays a part i.e. Liver, thyroid, pituitary, testes, usually among pubescent boys and men over 50 and is often as a side effect of medications for varied conditions, poor diet, excess alcohol, misuse of drugs and environmental factors.
A full medical examination is needed to find the cause and to determine any treatment if resulting breast enlargement is a major cause of discomfort.
Information above from British Medical Association, Complete medical encyclopedia, Dorling
Kindersley Limited, London 1990 ISBN 0-86319-438-3 and was rewritten by me for ease
of reading.