The current ratio of males to females on the planet ranges from approximately 110:100 to 79:100. This range is based upon age, occupation and environment.
The Effects of Age on Male to Female Ratio
For every 100 females that are born, 110 boys are born. As children mature and reach puberty, the ratio evens out to be 1:1. The ratio becomes much more biased towards women as age increases. For every 100 women over the age of 65, there are 79 men over the age of 65.
The Effects of Occupation on Ratio
The mortality rate for males is higher than that of females. This difference is due, in part, to the occupational hazards of jobs that are primarily held by men. The jobs with the ten highest percentages of fatalities are as follows:
• refuse collectors
• truck drivers
• factory workers
• law enforcement officers
The Effects of Environment on Male and Female Ratio
Environment is about current world events. For example, in times of war, many more men than women are killed in combat. Environment also includes personal health issues, such as weight and the resulting risks. A worldwide study showed that 40% of men are overweight as opposed to 30% of women. This leaves 25% more men than women at an increased risk for diabetes and heart disease.
Environment and occupation are the main factors that eventually cause females to outnumber males even though male births outnumber female births by 10%.