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07 October 2019
Albert Einstein’s brain weighed 2.71 pounds (1,230 grams) — 10% smaller than the average of 3 pounds (1,400 grams). However, the neuron density of his brain was greater than average.
Neanderthal brains were 10% larger than our Homo sapiens brains.
While humans have the largest brains proportional to body weight of all animals, we don’t have the biggest brains. That distinction belongs to sperm whales with 17-pound brains.
Human brains have gotten significantly smaller over the past 10-20,000 years. The lost volume is equivalent to the size of a tennis ball.
The hippocampus, the part of the brain considered the “memory center,” is significantly larger in London cab drivers. This is due to the mental workout they get while navigating the 25,000 streets of London.
The Effects of Modern Lifestyle on the Brain-Our modern lifestyle is changing our brains and it’s not all for the better!
Chronic stress and depression are rampant in modern life. Either can cause measurable brain shrinkage.
The modern diet is low in omega-3 essential fatty acids. Low levels of omega-3s result in brain shrinkage equivalent to two years of structural brain aging.
Since the Victorian era, average IQs have gone down 1.6 points per decade for a total of 13.35 points.
Technology has forced most of us to be prodigious multitaskers. But your brain can’t learn or concentrate on two things at once. What it can do is quickly toggle back and forth between tasks. But doing so decreases your attention span and the ability to learn.
Unexpectedly, millennials (aged 18 to 34) are more forgetful than baby boomers. They are more likely to forget what day it is or where they put their keys than their parents!
Attention spans are getting shorter. In 2000, the average attention span was 12 seconds. Now, it’s 8 seconds. That’s shorter than the 9-second attention span of the average goldfish.
Brain cells cannibalize themselves as a last ditch source of energy to ward off starvation. So, in very real ways, dieting, especially low-fat diets, can force your brain to eat itself.
Over 140 proteins in the brain are negatively impacted by exposure to electromagnetic frequencies, the kind emitted by your cell phone and other electronic devices.
Relying on GPS to navigate destroys your innate sense of direction, a skill that took our ancestors thousands of years to develop and hone. When areas of the brain involved in navigation are no longer used, those neural connections fade away via a process known as synaptic pruning.
Rapid advancements in neuroscience means that information gets outdated fast. This is one reason that there’s a lot of misinformation and myths floating around about the brain. New evidence has shown that these commonly accepted brain “facts” are not true.
The popular myth that we use only 10% of our brains is flat-out wrong. Brain scans clearly show that we use most of our brain most of the time, even when we’re sleeping.
There is no such thing as a left-brain or right-brain personality/skill type. We are not left-brained or right-brained; we are “whole-brained.”
In spite of what you’ve been told, alcohol does not kill brain cells. What excessive alcohol consumption can do is damage the connective tissue at the end of neurons.
The “Mozart effect” has been debunked. While listening to certain kinds of music can improve memory and concentration, there’s nothing unique about listening to Mozart.
You may have heard that we have more brain cells than there are stars in the Milky Way, but this is not true. Best-guess estimates are that we have 86 billion neurons while there are 200-400 billion stars in the Milky Way.
It’s often said that there are 10,000 miles of blood vessels in the brain, actually, that number is closer to 400 miles. Still, a substantial amount!
Contrary to the prevailing medical belief, having high total cholesterol is not bad for your brain. In fact, high cholesterol actually reduces your risk of dementia.