It is amazing how a simple hug can be medicine for certain illnesses. In an article, “The Perfect Hug Length to Improve Immunity and Reduce Stress” researched by Mercura Wang, studies were found relating to hugs and its effects on the human body. She wrote, “A simple embrace acts as free medicine, even against viruses.”

Wang researched a study conducted at Carnegie Mellon University that showed that with the right frequency (how often) and duration (how long) of hugs can prime the immune system, lead to better heart health and even help heal emotional wounds. At Carnegie Mellon University, lead researcher Sheldon Cohen had an assumption that physical touch may be one of the keyways that social support protects us from stress-induced illnesses. His findings suggest that a hug, while being an affectionate human behavior, can have an effective defense against stress-related illness and boost the immune system.

There is a “science” behind the hug. When we share a hug, there are various events that unfold in our body and brain. The hug can affect us neurobiologically, neurologically and socially. On the neurobiological level, there is a network of nerves under the skin called C-tactile afferents, also referred to as “cuddle nerves”. These nerves respond to the gentle, affectionate touch and send signals to the insular cortex. This cortex is the brain’s center that processes emo-tions. When the cortex is stimulated, the “cuddle nerve” releases endorphins. These endorphins are the body’s natural painkiller that aid in boosting moods. These “cuddle nerves” can create a feeling of comfort, reinforce our drive to seek and enjoy the close physical contact with others.

On the neurochemical level, hugging can prompt the release of several “feel good chemicals” in the body. One is oxytocin (often referred to as the “love hormone”). This “love hormone” deepens feelings of bonding, trust and safety. Hugging also releases dopamine, which is associated with pleasure, in addition to serotonin. Serotonin stabilizes mood and can promote happiness. On the social or the psychological level, hugs can be supportive without the usage of words. Hugs can be a non-verbal affirmation of shared emotions and reinforcement of social bonds.

In this “science of hugs”. Researchers tested different type of hugs and the effects of “hug times”. These re-searchers discovered the precise requirement for a perfect hug. They found that a one-second hug felt unsatisfying and only provided minimal benefits. At the same time, a 5 to 10-second hug proved to be optimal while too long a physical contact became uncomfortable. For intimacy moments, it was found that a 20-second hug produced the strongest measurable effect.

Conny Wade, a functional medical practitioner and health coach said, “Physical touch also improves cardiovascular health by increasing heart rate variability (HRV). This HRV is a crucial measure of how well our body responds to stress. Wade continues to say that “HRV should be as high as possible.” According to Wade, receiving hugs on a regular basis can also help reduce inflammation. She went on to say, “Inflammation is largely caused by chronic stress, and chronic inflammation has been connected to a variety of health issues, including depression and autoimmune diseases.” Receiving “affectionate hugs” (5 to 10 seconds) produces benefits way beyond stress reduction and healthier hearts. Those who receive consistent physical comfort, whether from pets, humans or weighed blankets, slept more soundly and woke up more refreshed than those with less contact.

How fortunate we are. We always have a comforting hug. It emanates from our Nembutsu, Namu Amida Butsu. It is not a human touch, yet it is the Buddha that gives comfort and supports us in compassion and wisdom. Our Nembutsu is a 5 to 10-secong hug. Human touch or a Buddha’s hug is something that touches our hearts and minds, and gives comfort, acceptance and support.

Gassho,
Rev. Seijo Naomi Nakano