Oxytocin is a hormone that warms our hearts.
It is a hormone that allows us to trust and love others more.

--- p.5

Oxytocin in our bodies allows us to empathize with the pain and joy of others.
People with high oxytocin levels are more considerate, caring, encouraging, and trusting of those around them, and they easily forgive and forget others' mistakes.
What's really interesting is that when we are kind to others and see them happy, our oxytocin levels go up.
The formula for oxytocin is a virtuous cycle.
People with high oxytocin levels unknowingly raise the oxytocin levels of those around them.

--- p.41

Experts agree that low levels of oxytocin in the body can be a trigger for loneliness, causing various diseases.
Lonelier and more socially isolated people are, the lower their oxytocin levels are. Low oxytocin reduces social interaction and reinforces negative emotions, hindering the formation of new relationships and meaningful, quality connections.
It is a vicious cycle, not a virtuous cycle.

--- p.56

Oxytocin was the magical hormone that turned trust into confidence.
But what's even more interesting is that the very act of being kind to someone raises our oxytocin, and as oxytocin rises, we become more kind and compassionate, creating a surprising virtuous cycle.

--- p.77

People with mutations in the oxytocin receptor had much more difficulty empathizing with the suffering of others than normal people, and also reported difficulty imagining suffering in their minds.

--- p.88

Oxytocin is closely related to parental parenting behavior.
Parents with high oxytocin levels respond more readily to their baby's cries and make much better eye contact with their baby.
(Omitted) Oxytocin in the blood flows into the parents' brain, inducing them to show more affection and interest in the child.
In conclusion, considering that the oxytocin in the mother's body during pregnancy affects the child's sociality, that the closer the couple's relationship, the higher the oxytocin, and that, above all, the oxytocin in the parents' body is deeply related to the child's oxytocin, and that it affects the child's parenting attitude and sociality when the child grows up, it is inevitable that children raised by happy parents will be happier, more social, and more resilient.

--- p.93

Studies showing that when lovers hug more often and for longer, more oxytocin is secreted and blood pressure is lowered, studies showing that giving oxytocin to rats with ischemic heart disease prevents damage to the heart muscle, and studies showing that oxytocin improves heart failure when it stimulates nerves all demonstrate that oxytocin protects the heart from stress and improves its function.

--- p.127

A study conducted at Massachusetts General Hospital in Boston found that when 25 healthy adult men were given oxytocin and a full breakfast, they ate 122 fewer calories than the placebo group, and specifically, reduced their fat intake.
Furthermore, it not only lowered the secretion of gralin, but also lowered insulin resistance.

--- p.132

Exercise promotes the release of oxytocin.
Exercise not only increases blood oxytocin levels directly, but also increases the density of oxytocin receptors when exercise is done consistently over a long period of time.

--- p.179

It was confirmed that the longer the eye contact between a dog and its owner, the higher the owner's oxytocin level.
In addition, it was observed that the dog's oxytocin level also increased along with the degree to which the owner increased.

--- p.195

This could mean that people with more oxytocin in their bodies express gratitude more often, or it could mean that oxytocin levels may rise when expressing gratitude.
(Omitted) Perhaps, whenever we feel grateful, our immunity improves and our body becomes healthier as a result.

--- p.203~204

The secret to turning distress into eustress is to incorporate an oxytocin lifestyle into your daily routine.
I need to find a life that will get oxytocin pumping through my body right now.
Then cortisol will decrease and oxytocin will increase.

--- p.214

The most important thing is to create your own narrative.
Because our lives are a bundle of events and stories waiting for meaning yesterday, today, and tomorrow.
When my narrative and your narrative meet and become our narrative, we can live happier, more meaningful lives.

--- p.226