more hereIn 2013, Neil deGrasse Tyson hosted a mind-bending debate on the nature of “nothing” — an inquiry that has occupied thinkers since the dawn of recorded thought and permeates everything from Hamlet’s iconic question to the boldest frontiers of quantum physics. That’s precisely what New Scientist editor-in-chief Jeremy Webb explores with a kaleidoscopic lens in Nothing: Surprising Insights Everywhere from Zero to Oblivion (public library | IndieBound) — a terrific collection of essays and articles exploring everything from vacuum to the birth and death of the universe to how the concept of zero gained wide acceptance in the 17th century after being shunned as a dangerous innovation for 400 years. As Webb elegantly puts it, “nothing becomes a lens through which we can explore the universe around us and even what it is to be human. It reveals past attitudes and present thinking.”
Among the most intensely interesting pieces in the collection is one by science journalist Jo Marchant, who penned the fascinating story of the world’s oldest analog computer. Titled “Heal Thyself,” the piece explores how the way we think about medical treatments shapes their very real, very physical effects on our bodies — an almost Gandhi-like proposition, except rooted in science rather than philosophy. Specifically, Marchant brings to light a striking new dimension of the placebo effect that runs counter to how the phenomenon has been conventionally explained. She writes:She cites a recent study at the Harvard Medical School, in which people with irritable bowel syndrome were given a placebo and informed that the pills were “made of an inert substance, like sugar pills, that have been shown in clinical studies to produce significant improvement in IBS symptoms through mind-body self-healing processes.” As Marchant notes, this is absolutely true, in a meta kind of way. What the researchers found was startling in its implications for medicine, philosophy, and spirituality — despite being aware they were taking placebos, the participants rated their symptoms as “moderately improved” on average. In other words, they knew what they were taking wasn’t a drug — it was a medical “nothing” — but the very consciousness of taking something made them experience fewer symptoms.It has always been assumed that the placebo effect only works if people are conned into believing that they are getting an actual active drug. But now it seems this may not be true. Belief in the placebo effect itself — rather than a particular drug — might be enough to encourage our bodies to heal.
This dovetails into recent research confirming what Helen Keller fervently believed by putting some serious science behind the value of optimism. Marchant sums up the findings:Realism can be bad for your health. Optimists recover better from medical procedures such as coronary bypass surgery, have healthier immune systems and live longer, both in general and when suffering from conditions such as cancer, heart disease and kidney failure.
It is well accepted that negative thoughts and anxiety can make us ill. Stress — the belief that we are at risk — triggers physiological pathways such as the “fight-or-flight” response, mediated by the sympathetic nervous system. These have evolved to protect us from danger, but if switched on long-term they increase the risk of conditions such as diabetes and dementia.
What researchers are now realizing is that positive beliefs don’t just work by quelling stress. They have a positive effect too — feeling safe and secure, or believing things will turn out fine, seems to help the body maintain and repair itself…"
https://www.brainpickings.org/2014/06/2 ... l-thyself/