Good explanation! Some of the many benefits of fasting and a lower carb whole food diet on the immune system, blood pressure, blood sugar and anti-aging, all backed up by clinical data: Thymus stem cells are regenerated, which suppresses aging and renews the immune system. Fasting stimulates phagocytosis, the ingestion of bacteria and viruses by the immune system. Blood pressure is quickly and dramatically lowered, which is very important for a good outcome with the current pandemic. Fasting increases nitric oxide, which has manifold postive effects like reducing arterial plaque. Weight loss from fasting only loses10% lean tissue and 90% fat compared to the typical 25% lean tissue and 75% fat lost when calorically restricting for long periods. Blood clotting is reduced and blood clots and arterial plaque are reabsorbed into the body. Vitamin D plasma levels are increased, and vitamin D in turn increases autophagy! Blood sugar and insulin are lowered, allowing white blood cells to move more freely throughout the body and do their job. Ideal blood sugar is around 80. Some viruses activate glycolosis (the release of sugar in the body) and clinically it has been shown that decreasing glucose metabolism in the body weakens the influenza virus. Fasts of several days will not affect short term female fertility and may increase long term fertility especially in women with PCOS. It's absolutely fine for cortisol to be high while fasting, because it produces sugar from fat instead of lean tissue kzfaq.info/get/bejne/nc91d8SV39Wpoqc.html Does the body prefernetially prefer glucose as a fuel? No, it never uses mainly glucose for fuel and using glucose for fuel is very biochemically damaging! kzfaq.info/get/bejne/hMxhndp-x9yyqKs.html The hormone Leptin is an immunomodulator that keeps the body from attacking itself and obesity causes leptin resistance. Fasting very quickly reduces leptin resistance and leptin levels and one day of fasting can cut your leptin levels in half and gets your immune system working properly again! When you move out of MTOR your body shuts down the building blocks of the cell which are used to produce organelles and proteins. This means the mechanisms needed by viruses to replicate are by and large unavailable when you are in a deeply fasted state. It stimulates the AMPK complex and activates autophagy. Autophagy (literally self eating) will cause cells to recycle foreign matter such as viruses and kill cancerous and senescent cells. AMPK does many helpful things in the body including activating the body's antioxidant defenses. Does fasting burn muscle? In most cases no! kzfaq.info/get/bejne/qsuBfMSGm93UYqM.html Fasting can make you gain muscle faster: kzfaq.info/get/bejne/a7h9a6qD39mteZs.html Deep ketosis virtually eliminates chronic inflammation in the body. This can offset the life threatening symptoms of viral pneumonia which effectively kills you through inflammation. This also creates BHB ketones in your body, which also help your immune system and anti-oxidative system, especially in the brain. Ketones also provide an additional energy source during infection, which is critical when trying to fight off a bug. In fact you can have as much as three times the total energy available in your blood when you are in deep ketosis, or even more. It increases mitochondrial function and repairs mitichondrial DNA, leading to improved ATP production and oxygen efficiency and thereby making cells better able to fight off infection. Increased mitochondrial function also has the added benefit of increasing your metabolism and cancer prevention! Fasts from 36-96 h actually INCREASE metabolic rate! kzfaq.info/get/bejne/eMtzksp6t5i-YWg.html Your body releases interferon which is also triggered by the body during viral attacks to shut down the replication ability of the surrounding cells and stop infections. After 72 hours or more fasted, your body actually recycles large numbers of immune bodies and creates new ones, rejuvenating your entire system. When you fast, this stimulates apoptosis in senescent or genetically damaged cells. This kills these cells off completely. Senescent cells are responsible for the effects of aging and are the root cause of the development of cancer. If it were possible to destroy them all it would completely stop aging and cancer. That is not possible but fasting can help limit these effects by killing off many of the affected cells and limiting the future effects of aging. Fasting also releases BDNF and NGF in the blood which stimulates new nerve and brain cell growth, helping a great deal with diseases like MS, peripheral neuropathy and Alzheimers. In fact, the biochemical regulator of BDNF production is beta-hydroxybutyrate, which is the same ketone the body produces to nourish the brain while fasting. Autophagy induced by fasting even helps hair regrow. What breaks a fast? kzfaq.info/get/bejne/bceCf9Z01d7dY6M.html Dieters losing weight through intermittent fasting show greater reduction in waist size and increase in insulin sensitivity for the same weight lost and alternate day fasters were shown to lose fat while gaining muscle at the same time over a six month period. Does fasting lower testosterone? No, it raises it and builds muscle! kzfaq.info/get/bejne/nLCFd9iUp73aZKc.html Fasting has been shown to increase bone marrow volume by 10% and levels of carnosine in the body in as little as a few weeks. Fasting also increases telomere length, negating some of the effects of aging at a cellular level. Eating one meal a day can bring most of these benefits to a lesser degree, and adding a few entire days off from eating per week will have even more effect especially when starting to feel poorly. Exogenous ketones can aid with fasting, making it easier in healthy people and allowing some people with specific issues to fast in spite of them without worrying as much about hypoglycemia. Children, pregnant or nursing women should not fast for periods longer than 16 hours. People with pancreatic tumors or certain forms of hypoglycemia generally cannot fast at all. Type 1 diabetics can also fast but it is more complicated and should be approached with caution as it could lead to ketoacidosis. Those with Addison's disease may also be unable to fast without liberal use of exogenous ketones, depending on severity. If you experience extreme symptoms of some kind, especially dizziness then simply break the fast and seek advice. Resources: pubmed.ncbi.nlm.nih.gov/7714088/ pubmed.ncbi.nlm.nih.gov/6859089/ www.ncbi.nlm.nih.gov/pubmed/23876457 repository.upenn.edu/cgi/viewcontent.cgi?article=1537&context=edissertations www.cell.com/cell/fulltext/S0092-8674(19)30849-9 www.ncbi.nlm.nih.gov/pubmed/25686106 www.ncbi.nlm.nih.gov/pubmed/24905167 www.ncbi.nlm.nih.gov/pubmed/10859646 www.sciencedirect.com/science/article/pii/S0005272806000223 www.ncbi.nlm.nih.gov/pmc/articles/PMC1413655/ www.ncbi.nlm.nih.gov/pmc/articles/PMC2815756/ www.cell.com/cell-metabolism/abstract/S1550-4131(15)00224-7 www.ncbi.nlm.nih.gov/gene/25712 www.ncbi.nlm.nih.gov/pmc/articles/PMC1779438/ www.ncbi.nlm.nih.gov/pubmed/10232622 academic.oup.com/ajcn/article/81/1/69/4607679 www.ncbi.nlm.nih.gov/pmc/articles/PMC3017674/ www.sciencedirect.com/science/article/pii/S1931312809002832 www.ncbi.nlm.nih.gov/pmc/articles/PMC5895342/ www.ncbi.nlm.nih.gov/pmc/articles/PMC6526871/ www.nejm.org/doi/full/10.1056/NEJMc2001176 pubmed.ncbi.nlm.nih.gov/23408502/ pubmed.ncbi.nlm.nih.gov/27569118/ pubmed.ncbi.nlm.nih.gov/21410865/ www.ncbi.nlm.nih.gov/pmc/articles/PMC6407435/ www.arcjournals.org/pdfs/ijrsb/v3-i11/7.pdf www.amjmedsci.org/article/S0002-9629%2815%2900027-0/fulltext pubmed.ncbi.nlm.nih.gov/20921964/ www.ncbi.nlm.nih.gov/pmc/articles/PMC6141719/ faseb.onlinelibrary.wiley.com/doi/abs/10.1096/fasebj.2019.33.1_supplement.819.10 www.biorxiv.org/node/93305.full pubmed.ncbi.nlm.nih.gov/25909219/ clinical.diabetesjournals.org/content/36/3/217 europepmc.org/article/MED/22402737?javascript_support=no onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2265.2005.02288.x www.collective-evolution.com/2017/05/16/study-shows-how-fasting-for-3-days-can-regenerate-your-entire-immune-system/ www.health.harvard.edu/heart-health/abundance-of-fructose-not-good-for-the-liver-heart holistickenko.com/vitamin-d-kidney-liver-disease/ n.neurology.org/content/88/16_Supplement/P3.090 This list compiled over months of research by the user known as Pottenger's Human on youtube but feel free to copy and paste this anywhere you like, no accreditation needed! My channel which will always contain an updated list of fasting benefits: kzfaq.info/love/MC_ZrmTUTGdQiIwJjZq1rg I have playlists on fasting and health and wellness. I also make a little commentary comment on health and fitness as well. When I have community posts available I will make a community post with this list that has a permanent link but which will remain editable and keep a fresh copy there at all times!

I just clicked on the video to comment that this is totally wrong and very misguiding to your somewhat large audience. Its not 'vastly superior to counting calories' its just a different approach and one that not everyone will enjoy.

That’s cute but I have yet to meet someone who can do intermediate fasting by choice for a longer period then 6 months, let alone a year. I’ve been maintaining proper calorie intake for the past 4 years keeping myself at below 12% and I know plenty of people who have been doing it for years. Do what’s sustainable.

Nice mate, well explained

Can you explain what happens with fasting if you have insulin resistance?

carbohydrate is the preferred fuel though

Russel brand fell off @MorePlatesMoreDates