Puberty News and Research

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Puberty is the maturation stage a person goes through when they develop secondary sexual characteristics. Usually, puberty occurs between the ages of 8 and 12 years in girls and between 9 and 14 years in boys.

Cornell University establishes Center for Reproductive Genomics

Cornell University has established the Center for Reproductive Genomics, which will combine basic research in reproductive sciences on Cornell's Ithaca campus with one of the country's leading fertility clinics at Weill Cornell Medical College (WCMC) in New York City.

10 May 2007

Evidence of very early onset defective bone mineralization in the lumbar spine revealed in children with cystic fibrosis

In a study of children with cystic fibrosis, French researchers found evidence of very early onset defective bone mineralization in the lumbar spine that was not caused by either nutritional status or lung disease.

2 May 2007

Helping eating for kids

Two years ago, Jenny O'Dea set herself a tough challenge: to persuade her one-year old daughter, Katherine, to eat a salty, black olive. The little girl took a small bite, Jenny and her husband cheered and applauded loudly, and Katherine grinned and ate the whole thing.

30 Apr 2007

Oxytocin affects the heart's response to social isolation

A team of researchers investigating the effects of oxytocin, a peptide produced by the brain that regulates social behavior, has found that it can prevent detrimental cardiac responses in adult female animals exposed to social isolation.

30 Apr 2007

Menstrual link to obesity

Women who begin their menstrual periods before they are 11 years old are more likely to have children who also start puberty early and are more overweight than the children of mums who mature later.

26 Apr 2007

Age when a woman's periods start may affect her children's growth rate

Researchers from the Medical Research Council and University of Cambridge, led by Dr Ken Ong, studied the association between mother's age at first menstruation, mother's adult body size and obesity risk, and children's growth and obesity risk in 6,009 children from the UK Avon Longitudinal Study of Parents and Children (ALSPAC) in Bristol.

25 Apr 2007

New perspectives on risk taking in adolescence

While the government spends billions of dollars on educational and prevention programs to persuade teens not to do things like smoke, drink or do drugs, a Temple University psychologist suggests that competing systems within the brain make adolescents more susceptible to engaging in risky or dangerous behavior, and that educational interventions alone are unlikely to be effective.

15 Apr 2007

Insulin receptors play a critical role in promoting islet growth

A new Joslin-led study has identified the insulin receptor as an important protein that promotes islet cell growth in mice whose bodies are unable to use insulin properly, or are insulin resistant, a precursor to type 2 diabetes.

4 Apr 2007

Maternal beef consumption associated with lower sperm concentration

New research has shown that women who ate a lot of beef while pregnant had sons who were more likely to suffer from poor sperm quality as adults, and it suggests that the growth promoters used in cattle may play a role in these men's reduced fertility.

2 Apr 2007

Mother's high beef consumption while pregnant associated with lower sperm counts in her son

Researchers sought to examine the relationship between semen quality and long-term risks from growth hormones and other chemicals in beef.

28 Mar 2007

HIV in late childhood and adolescence a growing problem

Scientists have highlighted for the first time the plight of the growing number of older children and adolescents living with undiagnosed HIV and AIDS in Africa. In a study published today in Clinical Infectious Diseases, Wellcome Trust researchers claim that delay in recognising this problem means that the needs of this important group are not being met.

12 Mar 2007

Why your teenager is so vile!

Researchers in the U.S. say they may have found a reason for the erratic mood swings of teenagers.

12 Mar 2007

Hormone kisspeptin stimulates release of the sex hormones which control periods

This finding suggests that kisspeptin could be a potential new treatment for fertility.

7 Mar 2007

Obesity epidemic fuelling premature puberty in girls

Researchers in the United States say girls who are overweight at the age of three run the risk of reaching puberty as early as nine years old and warn that the obesity crisis is now affecting children's development.

5 Mar 2007

Reduced brain growth in alcoholics with family drinking history

The brains of alcohol-dependent individuals are affected not only by their own heavy drinking, but also by genetic or environmental factors associated with their parents- drinking, according to a new study by researchers at the National Institute on Alcohol Abuse and Alcoholism (NIAAA).

21 Feb 2007

Gardasil reaction report released

The National Vaccine Information Center (NVIC) today released a new analysis of the federal Vaccine Adverse Event Reporting System (VAERS) reports of serious health problems following HPV vaccination (Merck's Gardasil) during the last six months of 2006.

21 Feb 2007