When you come to like someone, what is going on inside the human body?

As the proverb that "love is blind", it is said that people tend to lose reason and common sense when falling in love. Indeed, many researches have found that when people become love and love someone, various changes occur in the person's body, resulting in a completely different mental state. What changes and reactions will happen when I fall in love is summarized by overseas business media · Business Insider .

7 physical and psychological changes that happen when you fall in love | Business Insider
https://www.businessinsider.com.au/falling-in-love-changes-your-body-and-brain-2018-7

◆ 1: Blood pressure drops <br> Risk of blood pressure increases risk of heart attack, stroke, kidney failure etc. Although it is possible to lower blood pressure with moderate exercise and healthy eating habits, recent studies have pointed out that loving people may be useful as a method to lower blood pressure. For example, the United States Department of Health and Human Services conducted a survey on the relationship between marital status and physical health and life expectancy (PDF) in 2017, and found that married people have relatively low blood pressure and low risk of cardiovascular disease It turned out. Also, from the report of the American Heart Disease Association, it is known that couples under 50 years old have a 12% lower risk of vascular disease compared to single cow, and love for people is expected to lower blood pressure.

◆ 2: Secretion of hormones by physical contacts In a research paper by Harvard Medical School, the secretion of oxytocin , also known as "affection hormone", is increased by physical contact such as embrace, love, kiss, sex with a lover It is reported. Oxytocin is secreted. Oxytocin is a hormone secreted even when it is socially connected with people, and it decreases escape well and fear. Hugging your lover and kissing will deepen your love for your partner, creating a sense of satisfaction, calmness and security.

◆ 3: The influence from stress changes
In a study published in 2004, the new couple who just fell in love that the amount of secretion of cortisol, which is a hormone related to stress, increased compared to normal levels. And as it was, I examined the same couple again 12 to 24 months later, and it seems that the amount of cortisol returned to normal. This indicates that people will become affected by stress for 1 to 2 years after they start dating.

◆ 4: Effect on the internal organs - As the level of cortisol rises, it is more susceptible to stress. Show acute stress response (fight or escape or reaction) . This reaction increases heart rate and perspiration, inhibits digestive function such as stomach and intestines, promotes blood sugar level rise / fat burning. Professor Daniel Eamen, a psychiatrist and professor of cranial neuroscience, said, "When the limbic system becomes active, the vagus nerve heading from the brain to the intestine is activated, and when this nerve is stimulated, it affects the digestive organs such as the intestines It will appear. "

◆ 5: The brain gains pleasure <br> Falling in love, dopamine , a neurotransmitter in the central nervous system, is secreted. (PDF) In a study published in 2005, when I showed a picture of a person romantically loved for 17 subjects who realized that I fell in love with someone, I secreted dopamine in the brain It has become evident that the activities of the two areas have become active. When dopamine is secreted, brain function becomes active, learning abilities and motivation are improved, and constant pleasure is obtained.

◆ 6: Relieve pain <br> The nature that pain is alleviated by falling in love has been confirmed. In a study published in 2010, it was found that neural circuits of the reward system in the brain are active, as a result of fMRI scanning of the newly couple just newly dating and the blood flow dynamic response of the spinal cord. Mr. Sean McKay, who was involved in the research, said, "When you are at the stage of feeling enthusiastic love, people change feelings greatly, and the feeling about pain is greatly affected."

◆ 7: Symptoms of poisoning of love <br> <br> <br> <br> <br> <br> <br> <br> <br> Love addiction symptoms <br> Dopamine is released in the central nervous system by loving people, and the brain's reward system becomes active, it is considered that love may be addictive. In fact, release of dopamine in the central nerve and elevation of oxytocin and serotonin by orgasm are thought to cause relaxation of muscles and produce further sexual desire. In a study published in 2005, it is reported that when a person enthusiastically loved someone, a reaction was confirmed in the nerve in the same area as a person with drug dependence. According to research in 2017, people are temporarily satisfied with love, but it is reported that attention and concentration will be distracted unless satisfaction by love is obtained for a long time. However, the International Statistical Classification (ICD) of the World Health Organization (WHO) disease and related health issues is not being admitted to the addiction of love.