This is the real reason why girls are cold

People say cold hands are signs of faithful. Other people with cold hands are actually because of anemia and not related. And science says that the real reason lies elsewhere.

Every time it is cold weather is an opportunity for girls to start "hearing" on MXH: cold hands, needing people to warm up this winter .

The problem of cold hands is also very problematic. Dream Association always believes that cold-hearted daughter is bad for the faithful. The association is more realistic and likes . "throwing stones at the conference", thinking that cold hands are signs of illness and not related to faithful.

But if cold hands are a sign of disease, then it seems that this world is a bit lacking in healthy people. Notice how many people around you have cold hands in winter? I figured the ratio was very high, and most were girls' associations.

In fact, everyone felt cold hands and feet.

So what is the reason? If it is not a disease, why do we find our limbs cold in winter? And why is it only girls' association?

In fact, everyone can feel cold hands and feet, and that is a normal phenomenon

It is true that feeling of cold limbs can be a sign of some serious illnesses, including rheumatism, lupus erythematosus, arthritis, and blood pressure . However in most cases, the cause is due to Raynaud's disease - extremely common syndrome, causing blood vessels to contract excessively.

According to Professor Michael Tipton from Portsmouth University, it is important to know that men and women can feel cold, thanks to temperature sensing cells located a few millimeters from the skin surface. Normally, our body temperature is controlled by blood flowing under the capillaries. But when it is cold, the temperature sensing cell will squeeze the capillaries back, pushing blood to the heart, lungs and other more important organs to stay warm.

It is understandable that the capillary area is squeezed will have a lower temperature - like fingers, toes . The body sacrifices those areas to preserve the internal organs, increasing our ability to survive. That is why the victims of snowstorms can fall into the situation of losing a few fingers because of cold burns.

Raynaud's syndrome makes this vasoconstrictor too extreme.

However, for people with Raynaud's syndrome (usually women) , this vasoconstriction is too extreme. Their capillaries will be squeezed very quickly even though it's only a little cold.

"Research has shown that some people have faster cooling than others when they are in a cold condition, and it happens mostly in women," Tipton said.

"The blood vessels of women are closed faster than men, and then it takes longer to warm up."

Professor Tipton also notes that this is the temperature on the skin and not the body temperature. According to a study published in The Lancet in 1998, women with average body temperature were even higher than men, but their hand temperature was about 1.2 degrees C lower.

The cause of Raynaud's current science is still unknown. It is only known that it may come from genetics, affecting at least 10% of women in the UK, and 5 times higher incidence of this syndrome in women than men.

Is Raynaud dangerous?

The answer is no . Raynaud is one of the relatively harmless syndromes. However, it is undeniable that it may be a sign of some more ominous diseases. If cold hands and feet also cause skin ulcers that are difficult to heal, then you should consider seeing a doctor.

Not just because of Raynaud

Raynaud makes up part of the reason. The other part comes from the difference in hormone levels between the sexes.

The more estrogen, the more sensitive the body is to temperature.

Women are richer in hormones. In addition to being a sex hormone, estrogen also regulates peripheral blood vessels . The more estrogen, the more sensitive the body is to temperature. That's also why women 's body temperature changes with the menstrual cycle - because hormone levels change.

In addition, the cause may be because the female body usually has a higher fat rate than male about 10% . According to Professor Tipton, this fat layer creates an internal protective layer, but at the same time prevents heat from reaching the skin, so the temperature on the skin is therefore colder.