Which hair color is the most "flirtatious"?

A new discovery suggests that the genes that determine hair color in humans may reveal a lot about their loyalty and promiscuity.

Scientists say that genes determining hair color are closely linked to when and how someone has sex. People with naturally reddish-brown hair—both men and women—tend to have their first sexual experience later than those with other hair colors such as black, brown, or blonde.

Another interesting finding is that women with freckles on their faces also tend to be more protective, although this is not true for men with freckles. This is because both hair color and freckles in women are determined by a gene called MC1R.

Genes that determine hair color also influence how attractive you are to the opposite sex.

Furthermore, genes also play a surprisingly important role in determining the age at which a person will experience sex for the first time, the number of sexual partners they will have, the number of children they will have later, and even predicting whether or not they may suffer from infertility, scientists claim.

In fact, the genes that determine hair color are just one of 38 gene groups that can influence sexual behavior in humans. A "risk-taking" gene called CADM2 makes individuals more likely to have sex earlier than others, as well as have more sexual partners. In other words, those with this gene are more promiscuous and flirtatious. Conversely, those with the irritability gene (MSRA gene) will have sex later than average.

However, this susceptibility to irritation also has a surprising benefit. Researchers emphasize that fruit flies carrying this gene, while reproducing later, live longer than those that mate earlier.

Furthermore, the timing of a person's first sexual experience and the birth of their first child may be related to academic performance at school and personal health (conditions such as diabetes, heart disease, or cancer). Researchers from the Medical Research Council and the University of Cambridge (UK) analyzed the role of genes in human sexual behavior, a factor they believe has long been overshadowed by other factors such as economic conditions, family stability, parental involvement, and religion.

Their report stated: "Genes that determine hair color and freckles predict that their owners will remain virgins until a relatively late age (in females). Similarly, genes that cause red hair have a similar effect, but this time it holds true for both men and women." The study also found that the average age for first sexual intercourse in the UK is 18, and the average age for having the first child is 25.

Dr. John Perry, a geneticist at the Medical Research Council and lead author of the study, estimates that DNA's impact on human sexual behavior is around 25%. The remaining 75% is attributed to social and cultural factors. "The findings about genes determining risk-taking and sensitivity in humans are entirely new," he said.

Regarding the conclusion that sensitivity and irritability make people less attractive, Perry stated that "personality determines someone's attractiveness, which is perfectly understandable. While cultural and social factors are obviously involved, we cannot deny the influence of genes. It's an innate mechanism in each of our personalities."

According to Vietnamnet