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.

ADHD a result of delayed brain development

Scientists in the United States have discovered that youngsters with attention deficit hyperactivity disorder (ADHD) have a delay in the development of some parts of their brains.

13 Nov 2007

Cortex maturation in attention deficit hyperactivity disorder

In youth with attention deficit hyperactivity disorder (ADHD), the brain matures in a normal pattern but is delayed three years in some regions, on average, compared to youth without the disorder, an imaging study by researchers at the National Institutes of Health's (NIH) National Institute of Mental Health (NIMH) has revealed.

13 Nov 2007

Vaginal reconstruction not needed for most inter-sex females

Dispelling a common myth, researchers from the Johns Hopkins Children's Center say vaginal reconstruction should be a matter of preference for most teens or adult women born with a type of inter-sex condition marked by the presence of both female and male genitals.

28 Oct 2007

Exercise improves thinking and reduces diabetes in overweight kids

Just three months of daily, vigorous physical activity in overweight children improves their thinking and reduces their diabetes risk, researchers say.

22 Oct 2007

Causes of male infertility

Two reports from physician-scientists at NewYork-Presbyterian Hospital/Weill Cornell Medical Center shed new light on male infertility.

18 Oct 2007

Sex hormone signature indicates gender rather than just chromosomes

Help with assigning gender could one day be at hand for intersex individuals whose genital phenotypes and sex chromosomes don't match, thanks to the discovery of a stable sex hormone signature in our cells.

18 Oct 2007

Existing drugs may be useful in treating brain tumors

Scientists have shown how developing brain tumors can turn an encounter with a signaling molecule from a fatal experience for the tumor cells into a cue for their own growth and multiplication.

17 Oct 2007

Study identifies pathway required for normal reproductive development

Massachusetts General Hospital (MGH) clinical researchers, in collaboration with basic scientists from the University of California, Irvine (UC Irvine) have identified a new molecular pathway required for normal development of the reproductive, olfactory and circadian systems in both humans and mice.

17 Oct 2007

Genetic contributions to human brain morphology and intelligence

While showing an impressive growth prenatally, the human brain is not completed at birth.

17 Oct 2007

Brain cell growth diminishes long before old age strikes, animal study shows

Even early in adulthood, aging begins to slow the mind's growth -- but it does not have to stop it altogether, suggests a Princeton University study on the brains of adult monkeys.

17 Oct 2007

Lower testosterone levels in married men

A fascinating new study is the first outside of North America to observe lower testosterone levels among married men.

10 Oct 2007

Link between woman's hips and daughter's risk of breast cancer

In a study of the maternity records of more than 6,000 women, David J.P. Barker, M.D., Ph.D., and Kent Thornburg, Ph.D., of Oregon Health & Science University discovered a strong correlation between the size and shape of a woman's hips and her daughter's risk of breast cancer.

9 Oct 2007

A man's deep voice more attractive than good looks

According to researchers from the U.S. and Canada one of the features which attracts a woman to a man is a deep voice.

26 Sep 2007

Discovery of 350 genes related to female fertility

These discoveries might lead the way to eventually allowing clinicians to test whether an infertile woman has problems with a specific gene, allowing for improved diagnostic tests and tailored therapy in the future, said Dr. Castrillon, a specialist in the diagnosis of infertility and other diseases of women.

24 Sep 2007

Causes and treatments for gynecomastia

Gynecomastia, the benign enlargement of male breast tissue, is a common occurrence in adolescents as well as in middle-aged and older men.

20 Sep 2007

Children who learn heart healthy eating habits lower heart disease risk

A new study in a mid-August edition of Circulation: Journal of the America Heart Association confirms that when young children learn about heart healthy eating habits, it can strongly influence their heart disease risk later in life.

12 Sep 2007

Lavender oil and tea tree oil may make boy's breasts bigger

A study published in this week's issue of the New England Journal of Medicine suggests that repeated topical use of products containing lavender oil and/or tea tree oil may cause prepubertal gynecomastia, a rare condition resulting in enlarged breast tissue in boys prior to puberty, and for which a cause is seldom identified.

5 Sep 2007