Why Human Beings Need Physical Touch
CYSF · 2025 Bronze Medal
Overview
We reaserched the reason that people need physical touch to survive, but we want to know why and how this effects human development
Problem
How does human touch impact our brain and how can caregivers implement this knowledge in raising children?
Method
Researched various sites and double-checked all information.
Data
We did not do any experiments so all of our data is in our conclusion and research.
Conclusion
We receive touch signals in our somatosensory cortex, where signals are translated into a touch perception. The primary somatosensory cortex is located in the anterior part of the parietal lobe. Not getting enough touch can lead to many negative side effects, including stress anxiety and depression, these symptoms are particularly noticeable in babies, who can also lose weight, experience stunted growth, weaker immune system, and cardiovascular disease. Touch is also important for brain development, babies who experience more touch generally sleep better and are less fussy. Children who are touched less also experience more stress, which can damage their brains. Children given skin-to-skin contact time immediately after birth experience better heart rate, respiratory rate, blood pressure, lower risk of infection, body temperature, and blood sugar. this is especially shown in premature babies, who breathe better and have better blood sugar while touching their mothers. Many experiments have been done, one in particular shows how worms living in colonies are bigger and stronger than worms living alone. Children who don't experience enough positive touch will grow up to struggle with relationships, culture, and social context. This is because social touch is important for our brain development. Often when we are touched we experience releases of oxytocin and dopamine, however, if this touch is an unpleasant or unwelcome touch it can cause releases of cortisol, a chemical bad for our brain if experienced often, especially at a young age. Social touch is how contact between people plays a job in creating connections and emotional connections. An important nerve in this process is called the C-touch fibres, these fibres react to slow, gentle, caress-like touch, for example, a soft stroke. Touch signals, particularly from CT fibres, are linked over time with feelings of comfort and security. this touch impacts brain reactions, like producing oxytocin, which is linked to social bonds and rewards. In a lifetime, touch helps form our behaviour by affecting how we learn and connect with others. There is no evidence that lack of touch causes brain disorders, however, people with disorders might react negatively to touch and experience a lack of it, which can bring new problems. Health touch can help protect a child from issues of sense of self, which can also prevent body image problems. Children who had a lack of touch growing up may experience more stress and struggle with negative social behaviours. Parents could try to instill a more casual social touch into their routine with their children. Parents of newborns could try to have as much skin-to-skin contact as possible, to help their baby in a variety of ways.
Awards (1)
Competition history
- CYSF 2025
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Source: Calgary Youth Science Fair