Males | Men | Boys
A male organism is defined as the physiological sex that produces sperm. In most animal species, males exist as one of two sexes—the other being the female—and are typically necessary for the survival of a species due to their role in sexual reproduction. In humans, we refer to males as men if they are adults and boys if they are children or teenagers. Biologically, men have certain characteristics that distinguish them from women as a result of sexual dimorphism. Generally, these differences are most notable in height, weight, and body structure, though this is not always the case.
Generally, out of every 1,000 people there are 504 men (50.4%) and 496 women (49.6%). Typically, there are 107 boys born for every 100 girls. The total world population is about 7.62 billion making the total number of men in the world about 3.842 billion and number of women about 3.778 billion.
In the United States, a boy can be considered a man at either the age of 18 as he is legally no longer a child, 21 when he can legally drink, or 25 when he can purchase a rental car. A boy is usually considered a man when he is able to support himself, accomplish his goals, and contribute to society.
When a man stops growing depends from person to person and their genetics. On average men stop growing at the age of 18. Early bloomers stop growing as early as 14 and late bloomers stop growing at the age of 25. Usually men reach physical maturity typically at age 28.