Girls' bodies undergo gradual changes during puberty, analogous to but distinct from those experienced by boys. Puberty is the process of physical changes by which a child's body matures into an adult body capable of sexual reproduction to enable fertilisation. It is initiated by hormonal signals from the brain to the gonads-either the ovaries or the testes. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sexual organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when the child has developed an adult body. Until the maturation of their reproductive capabilities, the pre-pubertal, physical differences between boys and girls are the genitalia, the penis and the vagina. Puberty is a process that usually takes place between the ages 10–16, but these ages differ from girl to girl. The major landmark of girls' puberty is menarche, the onset of menstruation, which occurs on average between ages 12–13.
Although a greater number of women are seeking higher education, their salaries are often less than those of men. CBS News claimed in 2005 that in the United States women who are ages 30 to 44 and hold a university degree make 62 percent of what similarly qualified men do, a lower rate than in all but three of the 19 countries for which numbers are available. Some Western nations with greater inequity in pay are Germany, New Zealand and Switzerland.
3. (tie) The Mayo Clinic diet, Mediterranean diet, and Weight Watchers (3.9 stars): Mayo is cited for its good nutrition and safety, as well as being ''a tool against diabetes." The Mediterranean Diet is called sensible. Weight Watchers ''surpassed other commercial diet plans in multiple areas," the experts say, ''including short- and long-term weight loss and how easy it is to follow."
Thanks to its flexibility, easy-to-understand system, and group support, Weight Watchers came out way (weigh?) ahead, winning "best weight loss," "best fast weight loss," and "best commercial diet" in the U.S. News & World Report rankings. (Oprah's endorsement probably didn't hurt either!) They recently revamped their signature plan to include "free" foods like chicken breasts and fresh produce so you'll never feel hungry even while dropping pounds. In addition, their app makes tracking your food a piece of cake—which you're totally allowed to have on the program, by the way. (Even better news: Research supports the fact that Weight Watchers is one of the best weight-loss diets.)
In 2008 between US$33 billion and $55 billion was spent annually in the US on weight-loss products and services, including medical procedures and pharmaceuticals, with weight-loss centers taking between 6 and 12 percent of total annual expenditure. Over $1.6 billion a year was spent on weight-loss supplements. About 70 percent of Americans' dieting attempts are of a self-help nature.
In 1992, women earned 9 percent of the PhDs awarded in engineering, but only one percent of those women became professors. In 1995, 11 percent of professors in science and engineering were women. In relation, only 311 deans of engineering schools were women, which is less than 1 percent of the total. Even in psychology, a degree in which women earn the majority of PhDs, they hold a significant amount of fewer tenured positions, roughly 19 percent in 1994.
The MIND—a mix of DASH and the Mediterranean diet—is supposed to help protect the brain and prevent Alzheimer’s disease, though much more research is needed to determine whether it really helps curb brain decline. People are encouraged to eat from 10 brain-healthy food groups: green leafy vegetables, all other vegetables, nuts, berries, beans, whole grains, fish, poultry, olive oil and wine. They are also told to avoid foods from five food groups: red meats, butter and stick margarine, cheese, sweets and fried or fast food.
Women have, throughout history, made contributions to science, literature and art. One area where women have been permitted most access historically was that of obstetrics and gynecology (prior to the 18th century, caring for pregnant women in Europe was undertaken by women; from the mid 18th century onwards medical monitoring of pregnant women started to require rigorous formal education, to which women did not generally have access, therefore the practice was largely transferred to men).