How Intermittent Fasting Affects Your Body and Brain The Human Body.mp4

how long has it been since you last ate
people who fast intermittently often eat
within an eight-hour block leaving 16
hours of fasting in between during that
16 hours stretch their bodies undergo an
important change that sets them apart
from non fasters here's how it works
when you eat you store some of that
energy in the liver as glycogen but
after 10 to 12 hours of not eating your
glycogen reserves will be extremely low
as a result you may feel more irritable
than normal a term scientists call
hangry the upside is with little
glycogen left fat cells in your body
release fats into your bloodstream the
fat cells head straight to your liver
where they're converted to energy for
your body and brain so you are literally
burning fat to survive blood samples
show that people who had fasted for 12
to 24 hours experienced a 60% increase
in energy from fat with the biggest
change occurring after 18 hours this is
the benefit to intermittent fasting
because it puts you in a state called
ketosis and it's why researchers think
intermittent fasting could be the key to
a longer healthier life the process of
burning fat releases chemicals called
ketones in the brain
ketones trigger the release of an
important molecule called BDNF BDNF
helps build and strengthen neurons and
neural connections in areas of the brain
responsible for learning and memory
which could explain why a boost in
ketone production has been shown to
improve memory and people with early
signs of dementia in as soon as six
weeks increasing ketones in the body is
also a common treatment for patients
with severe epilepsy you don't
necessarily have to fast to boost your
ketone levels introducing more fatty
foods into your diet and cutting back on
carbs can have a similar effect a group
of people who tried this method for
three months not only lost weight and
body fat but also saw a decrease in
blood pressure and
hormone that is related to aging and
disease but scientists have discovered
that fasting increases ketone levels
more ketogenic diets can increase
ketones fourfold whereas fasting has
been shown to increase ketones by up to
20 fold as a result fasting compared to
a ketogenic diet may have a stronger
more beneficial effect on overall health
yet many Americans who eat 3 meals a day
with snacks in between never reach
ketosis and therefore aren't producing
enough ketones to promote good health
fasting and ketosis have been a key to
our survival from the beginning they
helped our ancient ancestors survive
through bouts of starvation and today
they're becoming recognized as a way to
help keep future generations mentally
and physically disease-free