Do your breasts get smaller when you drink coffee every day? The research is unreliable.

Recently, a new discovery by Swedish scientists has gone viral on Weibo and forwarded nearly a thousand times. Weibo pointed out that if girls drink more than three cups of coffee a day, their breasts will become smaller. Oncology researchers have found that half of women contain a special gene that shrinks their breasts when they consume caffeine and effectively protects against breast cancer. Is this the case? Yesterday, the reporter asked experts on genes and mammary glands, who said that because there are metabolic genes in the human body, the body absorbs and metabolizes caffeine at different rates, resulting in different metabolic reactions, which may lead to shrinking chest circumference. But it has nothing to do with the amount of coffee you drink every day, and drinking coffee every day increases the risk of breast cancer.

You can shrink your chest after three cups of coffee.

The research is unreliable.

The study tested nearly 300 women. But Helena Kinthrom of Lund University says there is no need for women to be alarmed by the findings.

Women who drink coffee don't have to worry about their breasts getting smaller overnight, she explained. The breasts will get smaller, but they won't disappear completely. If anyone wants to judge who drinks coffee by the size of a woman's bra, he will be disappointed in the end. Bras come in two sizes, one is the size of a cup and the other is the circumference of the bra, so it is difficult to tell which women drink coffee based on the bra.

On the contrary, while caffeine may shrink women's breasts, men who drink coffee have another result: their "breasts" will increase. The study also found that caffeine has a beneficial side, helping to reduce women's risk of breast cancer.

According to the original article, the study was published in the British Journal of Cancer. Different from the original Weibo article, the related paper published by researchers at Lund University in Sweden actually mentions two very important CYP1A2*1F genes. With them, there are different effects on coffee intake and chest size.

Between 1996 and 2006, the researchers analyzed the data by investigating the habits of 269 healthy women, testing the CYP1A2*1F gene type, and collecting data on the size of their breasts, according to the paper. For those with the CYP1A2*1F C-allele gene, girls who drank a lot of coffee every day had smaller breasts than those who drank less, while those with the CYP1A2*1F A gene had little to do with the size of their breasts.

"such a study only found that there was a correlation between coffee intake and chest size in some people. It doesn't mean that drinking three cups of coffee a day can lead to shrinking breasts. " Qi Ming, director of the genetics department of the first Hospital of Zhejiang Medical College, believes that according to the conclusion of Weibo, three groups of controlled trials are needed: one group drinks three cups of coffee a day, one group drinks one cup of coffee a day, and one group drinks nothing. In addition, the three groups are required to have exactly the same diet, daily routine and rest. These experimental contents are not mentioned at all in the relevant papers, so this study is not reliable.

Drink coffee every day

It is possible to shrink the chest circumference.

"We do have genes in our bodies that control breast size, such as height, weight, appearance, and physical traits, which are all formed by multiple genes." Qi Ming, director of the genetics department of the first Hospital of Zhejiang Medical College, specializes in dealing with genes. Although I have never heard of the rumor that coffee may lead to breast reduction. But he told me that the CYP1A2*1F gene mentioned in the British Cancer Journal paper is a large family with many branch members that are related to the body's metabolic rest. For example, the metabolic rate of food and drugs that everyone eats goes through the liver and kidneys, and the metabolic rate can vary by more than 300 times. This type of gene controls.

"if some people eat the same food or medicine, it is useless to take a regular dose, it takes many times that of ordinary people to be effective, while others, on the contrary, have a strong reaction when they eat a little bit. This is the magic of this kind of gene." Qi Ming inferred that drinking coffee every day may shrink the chest circumference, because the body may absorb and metabolize caffeine at different rates, causing different metabolic reactions under certain pathological conditions of the body, resulting in smaller mammary glands.

Drink coffee every day

Can increase the risk of breast cancer.

Women whose breasts are too plump and feel overloaded can try to improve them by drinking coffee, because experts conclude that coffee can help reduce the size of their breasts to some extent. According to a study published by the Canadian Women's Health Center, if women drink three cups of coffee a day, the incidence of breast cancer will be reduced by 25% to 70%, even for women with a family history of breast cancer.

Xu Haibin, director of breast surgery at the Municipal Hospital of traditional Chinese Medicine, told reporters the opposite answer: "Epidemiological investigations abroad have confirmed that long-term drinking coffee and red wine will increase the risk of breast cancer."

Xu Haibin said that foods containing cocoa, such as chocolate and coffee, have exciting effects, and eating them will stimulate the secretion of the pituitary gland. Eating every day increases the risk of cancer.

Of course, he also mentioned that generally only foreigners drink a lot of coffee every day. In terms of eating habits, drinking coffee is not the main habit of the people of our country.

Want to keep your breasts healthy.

Eat less ginseng bird's nest Hash film.

During the interview, I found that many women were worried about their excessive chest circumference. For this problem, the reporter specifically consulted Yang Ouou, the attending breast surgeon in the city.

"the chest circumference is too large, one is the size of the breast itself, and the other is the sagging breasts with loose ligaments. Generally, the cup size above D is too large, and the nipple more than 4 cm below the breast fold is considered to be sagging. Breasts are really too big, you can take drugs to inhibit mammary gland hyperplasia. But some people are actually fat, breast glands are not much, this kind of people through exercise to lose weight chest effect is better. For people with sagging breasts, you can also do sagging surgery. "

Yang Ouou said that if you want to keep your breasts healthy, you'd better eat a vegetarian diet, because many meats may contain hormones in feed, which can easily cause breast cancer. Besides, it is best not to touch health products.

"ginseng, bird's nest and Hass membrane (the ovaries of tree frogs) all contain estrogen, which is bad for the breasts for a long time." Yang Ouou said that in addition, plasticizer is also a big killer for women. Many people are used to putting a box of mineral water in the trunk of cars, but now the bottle is getting thinner and thinner, and the plasticizer is easy to release, which must be bad for breasts.