For parents of teenagers, puberty can be a tumultuous time. In an adolescent's life numerous mental and hormonal changes are taking effect and changing your son into an entirely new person. Fortunately, by paying attention to a few...
Thinning hair is a phenomenon usually associated with men, but it can also affect women. Male pattern baldness can begin at virtually any age over puberty in males, and hormonal fluctuations or other underlying conditions can result in women...
Overview It's never too soon to start good-health habits. The kind of care you give your body while it's developing and going through puberty, is key to lasting...
Testosterone is a naturally occurring sex hormone. Testicles and ovaries produce testosterone in body, but males have a greater amount of the hormone. Testosterone injections treat conditions, such as delayed puberty in males and for breast cancer...
Androgens are a type of hormone found in many organisms. They are responsible for deepening the voice in birds, amphibians and human males---they also are responsible for acne development in both sexes, according to Tulane University's e.Hormone...
Gout is a painful medical condition that occurs when high blood levels of uric acid lead to deposits of crystallized uric acid in susceptible joints. It often begins without warning and most commonly affects the big toe. According to AltMD,...
Testosterone is a sex hormone secreted by the testes in males and the ovaries in females. Both sexes also produce testosterone in the adrenal glands. Testosterone levels are typically 10 times higher in males compared to females. Ironically, the...
Unless a child is born with a genetic condition causing excessive hair growth from birth, most children will begin to grow more hair on various parts of their bodies when they reach puberty. Heredity plays a crucial role in determining the onset...
When you hear the word "testosterone," you probably know it as a hormone found in men. Although the word often is stereotypically associated with macho men who exhibit aggressive behavior and have huge amounts of muscle mass, those are...
Testosterone drives the physical and psychological transformation that teenage boys experience during puberty. The onset and completion of puberty is unique to each person. Male puberty begins as early as age 12 or 13 and completes around age 20....
Testosterone is the sex hormone most responsible for inspiring puberty in males, but females also produce small amounts that regulate some of their reproductive functions. Excessive levels of testosterone in both males and females can have...
The great changes that occur during the teenage years require special dietary needs that are unlike those at any other stage of life. During these years of nutritional importance, it is common to see unhealthy eating habits, such as skipping...
The adrenal glands are an integral part of the endocrine system, which means that they make hormones that are secreted into the bloodstream. Adrenal glands have a profound affect on tissues throughout the body. Adrenal gland activity is controlled...
Unfailingly, pimples seem to appear right before you most want to make a great impression. Chances are, you have or will experience this dreaded foe, perhaps on other parts of your body but almost certainly on the most visible one--your face.
In their review "The Adaptations to Strength Training," Foland and Williams write that women typically have about 60 percent to 80 percent of the muscle mass of men. This lower percentage of muscle mass means gains in absolute strength are larger...
You have been going to the gym for a while. Perhaps six months, a year, or even two years. However, you are disappointed with your results because you are unable to gain the big muscles you see in the bodybuilding and fitness magazines. To...
Testosterone is a male reproductive hormone. As a boy reaches puberty, testosterone causes the development of secondary sex characteristics, such as male pattern body and facial hair, a deep voice, growth of the penis and testicles and increased...
The male and female gonads--the testes and ovaries, respectively--arise out of a common embryonic tissue called the primordial gonad. Likewise, the male penis and female clitoris arise from a common precursor called the genital tubercle. For the...
Sex drive usually starts to fire up around the time of puberty in both males and females. In a lot of cases, once that fire starts, it stays lit without question for many years to follow. But there are occasions where both men and women lose their...
Overview The period of emission and ejaculation is called the male orgasm. Males are able to reach orgasm from the time they begin puberty. During...
During puberty, male sex hormones called androgens can cause normally light colored hairs on your face to become dark, curly and coarse. This condition, called hirsutism, affects approximately 10 percent of women in the U.S., according to...
Testosterone is a hormone produced by males in their testes and females in their ovaries and adrenal glands that helps produce red blood cells, muscles and bone density. It also affects libido and sperm production in men and menstruation in women....
Klinefelter's disease, also known as Klinefelter's syndrome or XXY male, refers to a common genetic disorder where males have an extra X chromosome (genetic material) in each of their cells. According to the Mayo Clinic, Klinefelter's syndrome can...
Different levels of basketball have balls with different weights corresponding to different circumferences. Each size is aimed to correlate with the average hand size of the players. Since the human body typically is done growing after puberty,...
Puberty represents a time of many changes for young men. Rising hormones cause their voices to deepen and more body hair to grow. Unfortunately, those hormones can also lead to the development of acne. Because a teenager's self image is at its...
Obesity in a male teenager is best described as an adolescent with a body mass index that places him in the 95th or higher percentile for his age. This means he has a body mass index, or BMI, higher than roughly 95 percent of his peers. BMI is...
Overview A wet dream is the uncontrolled ejaculation of semen from the penis during sleep. This is caused by sexual arousal and orgasm from dreams and/or...
Hemochromatosis is the presence of an abnormally elevated amount of iron in the body. Iron overload is another way to describe this condition. Hemochromatosis can occur due to an inherited abnormality, also known as primary hemochromatosis. The...
Traditionally speaking, males don't have significantly large breasts. Breast enlargement is considered to be a secondary sexual characteristic of females. Consequently, male breast enlargement (also known as gynecomastia) usually only happens if...