What is "love" from a medical perspective?

When it comes to love, men, women, young and old, all go crazy for it! You're the one who can't eat or sleep, the one who wants to see them every day, the one who's perfect in your eyes! Maybe in your friends' eyes, your partner isn't that great, but they're just the right fit for you (no one can replace them)!
Li Zongsheng said, "Love is a high fever, longing is a persistent cough."
But have you ever thought about it? The reason you go crazy for love is because of the many chemical reactions happening inside our bodies.
Simply put, love is a chemical reaction!
Hormones determine love at first sight, dopamine determines lasting commitment, adrenaline determines whether to make a move, and pride determines who speaks first. Finally, lifespan and reality determine who leaves first.
Dopamine: The first "love" is generated
. Normally, dopamine release is suppressed; only when encountering someone of the opposite sex "approved" by the cerebral cortex will dopamine be secreted in large quantities, giving a person their first feeling of "love." Dopamine is also known as the "love molecule."
Love is such a wonderful thing; the "passion" brought by dopamine can give people the illusion that "love" can be perpetually passionate.
Unfortunately, our bodies cannot withstand this stimulation indefinitely; that is, a person cannot remain in a state of peak heart rate forever. The intense release of dopamine causes brain fatigue, forcing the brain to allow those chemicals to metabolize naturally. This process may be quick or last three or four years. As dopamine decreases and disappears, passion fades, resulting in either a return to normalcy in "love" or a complete breakup. However, passion itself is fleeting, and this is not a tragedy.
Dopamine's role is to transmit information of excitement and pleasure; people become addicted to certain things primarily because the dopamine it releases is addictive. Smokers, alcoholics, drug addicts, and sex addicts are all related to dopamine levels and are controlled by dopamine.
Phenylethylamine (PEA): Addiction.
Phenylethylamine (PEA) is a fascinating substance; it can produce a feeling of extreme excitement, making you feel incredibly confident, while simultaneously accelerating your breathing and heart rate, causing sweaty palms, flushed face, and dilated pupils. It can energize you, boost your confidence and courage. However, it also suppresses the parts of the brain responsible for memory, attention, and objective analysis, having a strong side effect: it magnifies the other person's strengths while ignoring their weaknesses, leading to the "beauty is in the eye of the beholder" emotional effect, making you feel "dumber" or "foolish"!
When enough PEA is produced in your brain, you'll fall for someone.
Adrenaline: Heart-fluttering.
Rising adrenaline levels cause a faster heartbeat, excitement, sweating, and flushing, exciting the peripheral nerves, indicating you may be feeling "love" for the opposite sex.
It's a hormone secreted by the body. When a person experiences certain stimuli (such as excitement, fear, tension, etc.), this chemical is secreted, causing faster breathing (providing more oxygen), increased heart rate and blood flow, dilated pupils, providing more energy for physical activity, and faster reactions.
In short, phenylethylamine, adrenaline, and dopamine have similar functions; all three hormones can induce a state of "infatuation." Unfortunately, these love substances in the body cannot remain at a high level forever. The body has a strong self-regulating ability, always trying to adjust its state back to normal.
Once the passion substances disappear, a person recovers from this intoxicated state. Or, as we often say, the feeling of "love" is lost. Depending on individual and environmental differences, for example, the peak concentration of phenylethylamine (PEA) can last from 6 months to about 4 years, averaging less than 30 months. When your body gets used to increasingly higher levels of PEA, you may find that you can no longer feel the same passion as at the beginning.
Endorphins: The Marriage Hormone.
Everyone who has had romantic experience knows that love should have something beyond passion. After a passionate love affair, we need another substance, endorphins, to replenish the passion. The effect of endorphins is very similar to another drug—morphine—a sedative. It can reduce anxiety and give people a feeling of comfort, warmth, intimacy, and peace.
Scientists point out that exercise releases endorphins in the brain, which make people feel happy and energetic. The more you exercise, the stronger this feeling becomes. The sensation brought by endorphins is completely different from substances like PEA. Although it doesn't cause excitement or exhilaration, this warm feeling can still be addictive. Generally, the longer a marriage lasts, the more stable this state becomes. A major reason for this is that both partners have become accustomed to the tranquility brought by endorphins. It seems that the key to making love last is to secrete enough endorphins before the passion substances like PEA fade. Obviously
, the effects of endorphins are completely different from those of hormones like PEA; perhaps we can call endorphins the "marriage hormone." The marriage hormone begins to play a dominant role after the levels of love hormones decline. Like
dopamine, endorphins are also molecules used by the brain to "reward" oneself. Not only in the sweet intimacy of love, but also in the bittersweet experience of exercise, and even in the spicy food lover of people from Sichuan and Hunan, endorphins are all a result of their involvement.
Unlike the love at first sight caused by phenylethylamine, endorphins are molecules the body uses to keep love fresh after a relationship is established. Perhaps not as earth-shattering, but a guarantee of lasting true love.
In short, phenylethylamine, adrenaline, and dopamine are hormones secreted during the honeymoon phase, while endorphins are hormones that last a lifetime.
So, the person who can make you secrete hormones for a lifetime is probably love…
Oxytocin: Dependence.
In November 2012, scientists discovered that oxytocin can cause married men to distance themselves from other women who are attractive to them, thus preventing extramarital affairs and mistresses. Married or dating men who inhaled oxytocin maintained more personal space than others and were significantly less sensitive to photos of beautiful women. This finding shows that oxytocin is a “catalyst” for promoting fidelity in relationships.
It is the stage where lovers may become a couple, and oxytocin and angiotensin are important love hormones at this stage. Oxytocin is related to childbirth and breast milk, establishing a close bond between mother and child. The dependency between spouses is strengthened by the simultaneous release of oxytocin during sexual intercourse when both partners reach orgasm. Angiotensin, on the other hand, participates in the long-term stability of the marital relationship.
If someone has excessive dopamine and insufficient oxytocin, they may be prone to infidelity. The levels of these two substances are related to genetic factors, providing a plausible explanation for infidelity and extramarital affairs.
Oxytocin is a major factor contributing to monogamy.
Melatonin:
Currently, two hormones can be used to treat lovesickness. One is melatonin, secreted by the pineal gland in the brain. This hormone is released at night and promotes sleep, regulates jet lag, and has multiple physiological functions such as anti-aging, immune regulation, and anti-tumor effects. Melatonin is an ingredient in products like Brain Gold. Melatonin inhibits dopamine activity in the brain, thus helping to alleviate the pain of heartbreak or lovesickness.
The second hormone is oxytocin, which brings a sense of calm and contentment, transforming the pain of unrequited love into a blissful longing.
Serum amino acids: "The potion of forgetfulness."
The best "potion for forgetting love" might be serotonin, also known as serotonin. Sufficient serotonin helps stabilize and relax emotions, maintaining a peaceful and happy mood, and can effectively alleviate symptoms of heartbreak.
Depression is one of the affective mental illnesses caused by heartbreak, and its main symptom is a decrease in serotonin secretion. Experiments have shown that injecting serotonin can quickly relieve the pain of heartbreak.
Why does love experience the seven-year itch?
In recent years, many celebrity couples have experienced relationship problems and separations, from Cecilia Cheung and Nicholas Tse to Yao Chen and Ling Xiaosu, and the highly publicized Dong Jie and Wang Dazhi. While this is related to the complexities of the entertainment industry and individual character, let's look at why people experience the seven-year itch in love and marriage from a medical perspective.
Human cells undergo daily metabolism, replacing themselves on average every three months. As old cells die, new cells are born.
Due to the different metabolic times and intervals of different cells, it generally takes seven years to completely replace all the cells in the body. In other words, physiologically, we become a different person every seven years. You are you, but you are not you anymore. These seven years may have changed most of your memories. So no matter how deep the love, after seven years, the image of her in your mind no longer exists. We are only maintaining a relationship out of habit and a certain inherent rationality of continuity—a popularized, familial theory.
However, you could also say that your lover changes every day, and you can fall in love with a new lover every day. Therefore, it is very normal for love to exist in marriage, but it will never be the same person as seven years ago. After all, everything changes, including physiology and psychology.
Love is like a severe cold—a magnificent performance, excruciating pain, then gradually fading and reborn. But a severe cold can be quickly cured with medicine like cold medicine, but once time has passed and you let go, after seven years, we will never have the chance to love again. So, the key is not whether love will disappear, but whether we will let go. As long as it's a seven-year cycle, we all have the chance to fall in love again…
Foods containing passion hormones:
Scientists have found that chocolate contains abundant passion hormones—phenylethylamine.
Chocolate has the effect of suppressing depression and producing a feeling of euphoria, especially dark chocolate with a higher cocoa content, which is rich in phenylethylamine, playing an important role in regulating mood. Many doctors even use chocolate as a natural remedy for mild depression because it is rich in magnesium, which has calming and antidepressant effects.
Chicken, coffee, strong tea, beans, dairy products, peanuts, bananas, lettuce, ginseng, walnuts, fruits, goji berries, and dates all contain phenylethylamine.
So, single people, if you don't have love, start by eating chocolate!
The true meaning of love:
Love needs passion, but when passion fades, love needs to become rational, a social responsibility, a commitment… allowing love to sublimate into kinship. The greatest thing in the world is actually kinship. When two people become family, with love as the seasoning, their happy life together will last a lifetime. Holding hands and growing old together—what a profound kinship that is! The two people have reached a state of unity, both spiritually and physically.
Many people believe that love exists before marriage but not after. In reality, it's just that love evolves into familial affection. People often still pursue love, novelty, and excitement, but they neglect that familial affection is the only true destination of love...
Wishing all lovers in the world a happy ending!

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