Women are split — 31 percent want a girl, 30 percent a boy — but 43 percent of men prefer a
About 40% of parents, across the decades, have told researchers that if they could only have one child, they would want a boy. Only a consistent 20% to 30% has chosen a girl or no preference. At least when it comes to what we think we want, the data is clear.
When we look at the statistics the chances of having a boy or a girl are almost the same and there's no medical evidence to suggest we can influence this. You may, however, have heard about the 'Shettles Method'. In the 1970s Dr Shettles found that female and male sperm had different characteristics.
Research over hundreds of years has consistently found that boys naturally outnumber girls at birth. The speculation is that this is nature's way of countering the relatively high mortality rates of males, and creating more of a gender balance in the population.
A recent study suggests that mothers tend to prefer daughters and fathers prefer sons.
Dads Prefer Sons And Moms Prefer Daughters, According To Science.
Moms who have girls are much happier than those with boys, particularly when the children reach early adulthood, according to a study from the Journal of Family Issues. However, a survey done by Gallup says: 54% of Americans say boys are easier to raise than girls. 27% say girls are easier to raise than boys.
Among humans, women's life span is almost 8% on average longer than men's life span. But among wild mammals, females in 60% of the studied species have, on average, 18.6% longer lifespans.
Girls physically mature faster than boys on a physical level as well due to the quicker process of puberty. Girls undergo puberty earlier than boys by about 1-2 years, and generally finish the stages of puberty quicker than males due to their differences in biology.
In a survey of more than 500 parents by financial resource site MoneyTips released exclusively to MarketWatch, parents say it's the girls that cost you more. They estimate it costs, on average, an additional $2,160 a year to raise a daughter versus a son through age 18.
Speed: since sperm containing the Y chromosome are faster than those containing the X chromosome, if the egg is in the fallopian tube at the time of intercourse, there is a greater probability of a Y sperm reaching and fertilising it, which means there is a greater probability of the baby being a boy.
The desire to be another gender occurs when one's sexual anatomy is in conflict with one's gender identity. It may be about an erotic desire to be in the role of the other gender, to play the roles and have the privileges of the other gender, or it may be related to a feeling that one was born into the “wrong” body.
Parents who have girls are much happier than those with boys, particularly when the children reach early adulthood, according to a study.
Men desire sons for the same reasons that women desire daughters. Some men want the company of their own gender … to share male camaraderie, to do yard work together, or paint the house with, or go to ball games. In short, they want sons so they can do things they like to do.
Boys have a great increase in muscle size and strength, together with a series of physiological changes making them capable of doing heavier physical work than girls and of running faster and longer.
Most researchers agree that women are more emotionally expressive, but not that they experience more emotions than men do. Some studies have shown that women are more likely to produce inauthentic smiles than men do, while others have shown the opposite.
Sex Hormones. Sex hormones affect how you age. Both male and female hormones decline as you get older. It's a bit misleading to label hormones as male or female, as everyone has some of each type, but at varying levels determined by biological sex.
U.S. life expectancy at birth
On average, a person living in the U.S. can expect to live to 76.1 years. Asian people have the longest average life expectancy (83.5 years) and American Indian/Alaska Natives the shortest (65.2 years).
Visceral fat is a risk factor for coronary heart disease, the leading underlying cause of death for Australian men. Coronary heart disease, which results from a combination of biological factors and lifestyle habits, is a major reason for the difference in mortality between men and women.
Higher levels of oestrogen (the female sex hormone) and the presence of a second 'X' chromosome in women mean that women have more fat sitting under their skin (subcutaneous fat) whereas men carry more around their organs (visceral fat). This visceral fat is a risk factor for heart disease3.
Every stage of parenting has its challenges, but one poll reveals what age most parents feel they struggled with the most.
Only one pair, chromosome 23 determines the gender. Genetically, a person actually carries more of his/her mother's genes than his/her father's. The reason is little organelles that live within cells, the? mitochondria, which are only received from a mother.
Well, it turns out male offspring - so boys - inherit more genes from their mothers. The way this works is that when it comes to the sex chromosomes, females get two X chromosomes, one from their mother, one from their father, whereas males get an X from Mom and a Y from Dad.