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Human growthand development. Puberty is the process of physical changes through which a child 's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a female, the testicles in a male.
Breast development, also known as mammogenesis, is a complex biological process in primates that takes place throughout a female 's life. It occurs across several phases, including prenatal development, puberty, and pregnancy. At menopause, breast development ceases and the breasts atrophy. Breast development results in prominent and developed ...
Adolescent sexuality is a stage of human development in which adolescents experience and explore sexual feelings. Interest in sexuality intensifies during the onset of puberty, and sexuality is often a vital aspect of teenagers' lives. [1] Sexual interest may be expressed in a number of ways, such as flirting, kissing, masturbation, or having ...
Adolescence is a time of rapid cognitive development. [60] Piaget describes adolescence as the stage of life in which the individual's thoughts start taking more of an abstract form and the egocentric thoughts decrease, allowing the individual to think and reason in a wider perspective. [61]
Thelarche. Thelarche, also known as breast budding, is the onset of secondary breast development, often representing the beginning of pubertal development. [1] It is the stage at which male and female breasts differentiate due to variance in hormone levels; however, some males have a condition in which they develop breasts, termed gynecomastia.
From 2009 to 2010, the teen pregnancy rate dropped another 9%, the biggest one-year drop since the 1940s. Each year, almost 750,000 girls 15–19 become pregnant. Two thirds of all teen pregnancies occur among the oldest teens (18–19). Of them, 82% are unplanned, which accounted for about 20% of all unintended pregnancies annually.
Hebephilia is the strong, persistent sexual interest by adults in pubescent children who are in early adolescence, typically ages 11–14 and showing Tanner stages 2 to 3 of physical development. [1] It differs from pedophilia (the primary or exclusive sexual interest in prepubescent children), and from ephebophilia (the primary sexual interest ...
A training bra (also trainer bra, starter bra, or first bra) is a lightweight brassiere designed for girls who have begun to develop breasts, at Tanner stage II and III. The training bra is intended to be worn during puberty when the breasts are not yet large enough to fit a standard-sized bra. Training bras often provide minimal or no support ...