“I’ve written quite a bit about the vagus nerve in some of my blogs and books (The Five Side Effects of Kindness), mainly because the vagus nerve produces an anti-inflammatory effect in the body. I’ve also emphasised how this effect is even amplified by the experience of compassion.
“That’s why I found the paper so exciting because it reviewed 12 scientific studies, involving 1822 patients, and suggested a link between high vagus nerve activity and better cancer prognosis. The effect, the authors wrote, was most likely due to an anti-inflammatory effect created by the vagus nerve.
“I’ve summarised the main findings of the paper below.
“The authors pointed out that three main biological factors contribute to the onset and progression of tumours. These are: oxidative stress (free radicals), inflammation, and excessive sympathetic [nervous] activity (stress).
“Amazingly, the vagus nerve seems to inhibit all three.
“Many of the studies measured heart rate variability (HRV), which is the main index of vagus nerve activity. Briefly, when we breathe in, heart rate quickens a little, only to slow down again when we breathe out. The vagus nerve is responsible for the slowing down, and thus the difference between this increase and decrease (high and low) of heart rate – heart rate variability (HRV) – is considered an indicator of vagus nerve activity.
“Generally, the paper found that the higher a person’s HRV, or vagus nerve activity (also known as vagal tone), the slower the progression of cancer, and this was true for all cancers studied. The effect was especially pronounced in late stage, metastatic cancers.”
Read Dr. Hamilton’s full op-ed on his website: The Vagus Nerve and Cancer