Could be the cause if: You often feel tired; youâve lost weight for no Â­apparent reason; you are suffering from Â­abdominal pain. Coeliac disease is an adverse Â­reaction to gluten, which is found in wheat, barley and rye and all foods containing them â everything from pasta and bread to pies and some gravies and sauces.
Both genetic and environmental factors are involved in the timing of puberty. Body fat and/or body composition may play a role in regulating the onset of puberty. Puberty is associated with the development of secondary sex characteristics and rapid growth. Central precocious puberty (CPP) is puberty that occurs earlier than normal due to release of hormones from the hypothalamus of the brain.
1 This âconstitutional delayâ of growth, development or puberty is the most common reason puberty is overdue, especially in boys. 2  A medical condition: A chronic disease â such as diabetes, cystic fibrosis, celiac disease, kidney disease or asthma â can delay puberty. Girls: Develop breasts, grow pubic hair and underarm hair and start menstruating (having periods). 2  Their hips widen and they have a growth spurt. 3  Boys: Grow pubic, facial and underarm hair. 4  Their testicles and penis get larger.