Ketosis: What Is It? Is It Good or Bad for Health?

Ketosis: What Is It? Is It Good or Bad for Health?

November 4, 2019 15 By William Morgan


– Ketosis is a metabolic state where fat provides most of the fuel for
the body instead of carbs. You can get into a state of ketosis by following a very
low-carb, high-fat diet. Now, in this video, I’m gonna have a look at whether that is a good idea. (chimes ring) Ketosis involves our body
producing ketone bodies from fat and using them as
energy instead of carbs. It occurs when there is
limited access to glucose in the blood, which is
the preferred fuel source for many cells in the body. To go into ketosis, people
generally need to eat fewer than 50 grams of carbs
per day, and sometimes as little as 20 grams per day. Now this requires following a
very low-carb, ketogenic diet. It involves removing high
carb foods from your diet, such as grains, candy
and sugary soft drinks. You also have to cut back on
legumes, potatoes and fruit. Now, in saying that,
ketosis can also happen unintentionally during pregnancy, infancy, fasting and starvation. When eating a very low-carb
diet, levels of the hormone insulin go down and
fatty acids are released from body fat stores in large amounts. Many of these fatty acids go to the liver where they’re oxidized and turned into ketones or ketone bodies. Now, these molecules
can be used as energy, much in the same way as glucose. And it’s from these ketones that the name ketogenic diet comes from. Ketones can supply energy for the brain. The big misconception
with a ketogenic diet is that brain doesn’t function
without any dietary carbs. It’s true that glucose is preferred and there are some cells in the brain that can only use glucose as fuel source. However, a large portion of your brain can also use ketones for energy, an adaptation that likely evolved so the brain could function during times of famine or starvation. In fact, after only
three days of starvation the brain gets 25% of
its energy from ketones. Now during long-term starvation, this number rises to around 60%. As for the small parts of the brain that still require glucose, the body can actually convert protein into glucose via a process known as gluconeogenesis. Now together ketosis and gluconeogenesis are perfectly capable of fulfilling the brain’s energy needs. Ketosis can help treat epilepsy. As for the positive effects, ketosis can help manage epilepsy, which is a common neurological condition characterized by recurring seizures. Now, around 30% of patients
continue to have seizures despite using anti-seizure medication. In the early 1920s, the ketogenic diet was introduced as a treatment for epilepsy in people who didn’t respond
to those drug treatments. It has primarily been used in children, with some studies showing
remarkable benefits. Many epileptic children
have had massive reductions in seizures on a ketogenic diet and some have even seen
complete remission. Ketosis can help with weight loss. The ketogenic diet is also
a popular weight loss diet that is well supported by science. In fact, many studies have
found that ketogenic diets lead to far greater weight
loss than low-fat diets. One randomized trial of 42 obese women reported 2.2 times more weight loss for those on a ketogenic diet compared to those on a low-fat,
calorie-restricted diet. What’s more, people
tend to feel less hungry and more full on a ketogenic diet, which is attributed to ketosis. Now, for this reason, it is generally not necessary to count
calories on this diet. Ketosis and ketogenic diets may also have other therapeutic effects as well. They’re now being studied for things like metabolic syndrome, heart disease, type 2 diabetes, Alzheimer’s disease, and Parkinson’s disease, even cancer. So, you know, I’m really looking forward to what all the fantastic
researchers might discover. Now, there are also a few
potential negative side effects from ketosis and
following a ketogenic diet that you ought to be aware of. This includes side effects
such as headaches, fatigue, constipation, high cholesterol
levels and bad breath. However, most of the
symptoms are temporary and should disappear
within a few days or weeks. It’s a good idea to
make sure to eat plenty of high-fiber, low-carb vegetables because a ketogenic diet
can be low in fiber. People who are taking
blood sugar lowering drugs should consult with a doctor
before trying a ketogenic diet, because the diet may reduce
the need for medication. Also, some epileptic
children have developed kidney stones on the diet. All that being said,
ketosis is generally safe for healthy people but it
will not suit everyone. Some people may feel
great and full of energy, while others may just
feel really miserable. Additionally, the elephant in the room is that following such a strict diet to induce ketosis is extremely difficult, especially for social
situations or eating out because it is just so
seriously restrictive. In that sense, unless
it’s for medical purposes, the majority of people just
don’t stick to it that long. Thanks for watching, if you
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