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.

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

Tea tree and lavender oils may cause enlarged breasts in boys

According to new research the use of shampoos, soaps and lotions which contain lavender oil and tea tree oils can cause some boys to develop enlarged breasts.

1 Feb 2007

Vitamin D may slow down breast cancer

The authors of a new study are suggesting that vitamin D may slow down the progression of breast cancer.

17 Oct 2006

Teenagers hardly use the area of the brain that is involved in thinking about other people's emotions

Teenagers take less account than adults of people's feelings and, often, even fail to think about their own, according to a UCL neuroscientist.

7 Sep 2006

Closing in on lethal arrhythmogenic right ventricular dysplasia in young athletes

Johns Hopkins experts on the genetics of a potentially lethal heart rhythm defect that runs in families and targets young athletes report they have greatly narrowed the hunt for the specific genetic mutations that contribute to the problem.

7 Sep 2006

Wheezy kids more prone to asthma

Children who become sensitive to allergens, such as cat hair, and suffer from wheezing in their first three years of life are prone to developing asthma, according to an Article in this week's issue of The Lancet.

24 Aug 2006

Turning the immune system against cancer

Medicine can now prevent a host of diseases with a mere shot of vaccine. Polio and smallpox are almost non-existent, and mumps and chicken pox are rarely seen nowadays.

4 Aug 2006

Regulatory T cells learn what to protect while in the thymus and that everything the cells learn may not be good

Regulatory T cells, which function like immune system police, learn early in life what to protect, and that may include viruses, bacteria and tumors, researchers have shown.

3 Aug 2006

Research shows promising results and points out new priorities for adult malnutrition in developing countries

While a great deal of research has been conducted on child and adult malnutrition in developing countries, there are only a handful of studies on adolescent malnutrition.

26 Jul 2006

Study shows eggs survive in older ovaries

In research that could have broad implications for women's fertility treatments, scientists have found that despite their age, female mice have a renewable egg supply in their ovaries.

5 Jul 2006

Female mice found to have a renewable egg supply

In research that could have broad implications for women's fertility treatments, scientists have found that despite their age, female mice have a renewable egg supply in their ovaries.

4 Jul 2006