Four Health Benefits of Hugs—and Why They Feel So Good

martyb writes:

Four health benefits of hugs-and why they feel so good:

For many people, the thing they've missed most during the pandemic is being able to hug loved ones. Indeed, it wasn't until we lost our ability to hug friends and family did many realise just how important touch is for many aspects of our health-including our mental health.

[...] The reason hugs feel so good has to do with our sense of touch. It's an extremely important sense which allows us not only to physically explore the world around us, but also to communicate with others by creating and maintaining social bonds.

Touch consists of two distinct systems. The first is "fast-touch", a system of nerves which allows us to rapidly detect contact (for example, if a fly landed on your nose, or you touched something hot). The second system is "slow-touch". This is a population of recently discovered nerves, called c-tactile afferents, which process the emotional meaning of touch.

These c-tactile afferents have essentially evolved to be "cuddle nerves" and are typically activated by a very specific kind of stimulation: a gentle, skin-temperature touch, the kind typical of a hug or caress. We see c-tactile afferents as the neural input stage in signaling the rewarding, pleasurable aspects of social tactile interactions such as hugging and touching.

Touch is the first sense to start working in the womb (around 14 weeks). From the moment we're born, the gentle caress of a mother has multiple health benefits, such as lowering heart rate and promoting the growth of brain cell connections.

When someone hugs us, the stimulation of c-tactile afferents in our skin sends signals, via the spinal cord, to the brain's emotion processing networks. This induces a cascade of neurochemical signals, which have proven health benefits. Some of the neurochemicals include the hormone oxytocin, which plays an important role in social bonding, slows down heart rate and reduces stress and anxiety levels. The release of endorphins in the brain's reward pathways supports the immediate feelings of pleasure and wellbeing derived from a hug or caress.

Read more of this story at SoylentNews.