DELAYED PUBERTY Puberty is said to be delayed when the breast tissue and/or pubic hair have not appeared by 13–14 years or menarche appears as late as 16 years. Causes of delayed puberty Constitutional delay Chemical farming -Insecticide,Pesticide,Rodenticide,Weedicide Environmental toxin Junk food Too much exercise Severe lack of eating (anorexia) Chronic illness Malnutrition Primary hypothyroidism