Articles tagged with Puberty
Researchers found that girls entering puberty with breast development are more likely to be obese by late adolescence. Additionally, earlier age of menarche is associated with increased risk of breast cancer.
A study of 286 girls ages 8-10 found that a low-fat diet resulted in reductions in estrogen hormone concentrations. After 5 years, girls in the intervention group had 29.8% lower estradiol levels and 27.2% higher testosterone levels compared to those on usual care.
The global obesity epidemic is spreading rapidly, with an estimated 300 million obese adults and 22 million children worldwide. Scientists attribute the rise to industrialized lifestyles, urbanization, and decreased physical activity levels, particularly among developing countries.
Researchers found that children who learned ASL before puberty exhibit distinct brain activity patterns when reading sign language, while those who learn it after puberty show reduced right hemisphere activity. This study highlights the importance of early language exposure in shaping neural systems for language.
Researchers discovered that insulin sensitivity decreases by 32% among pubertal teens, while those who haven't started puberty experience increased sensitivity. The study suggests that changes during puberty contribute to lowered insulin sensitivity, with potential implications for preventing type 2 diabetes.
Research reveals US boys are reaching puberty earlier than in past years, with average ages of pubic hair growth and genital development being significantly lower. This could have implications for testicular cancer risk, sex education, and psychosocial challenges.
A large study has established a connection between being overweight and earlier-than-average puberty in white girls, but found a weaker link in black girls. Researchers suggest that genetic or environmental factors may be at play in the latter group.
A new study found that puberty causes a general metabolic slowdown in both white and African American adolescents, with African Americans having greater lean mass in limbs but lower lean mass in the trunk. This difference may contribute to a lower resting energy expenditure (REE) in African Americans.
A 2000 study found that daughters of mothers exposed to the chemical polybrominated biphenyl (PBB) in contaminated Michigan feed experienced earlier onset of menstruation and pubic hair growth. The study, funded by NIH/NIEHS, linked high PBB exposure to an average age of first menstruation before 12 years.
A study found that prenatal exposure to DDE and PCBs increased the size of children at puberty, with boys growing taller and heavier and some girls becoming heavier for their heights. The findings suggest a potential link between environmental pollutants and childhood growth.
A new study suggests that mothers' depression may cause their daughters to enter puberty earlier. Researchers found a correlation between maternal depression and the timing of puberty in adolescent girls. The study also discovered a link between exposure to unrelated adult men, such as stepfathers, and early puberty in girls.
A new American Academy of Pediatrics study reveals that girls in the US are entering puberty earlier than previously thought, with black girls beginning around age 9 and white girls at 10. By their ninth birthday, 48% of black girls and 15% of white girls have begun breast or secondary hair development.