KETO RECIPES CHANNEL:
https://www.youtube.com/channel/UCnAGH-jp4YXl30rir1BPrxA/
Fasting and Thyroid Hormone T3: https://youtu.be/LXwafP7xoHk

How does fasting affect your hormones? Here’s everything you need to know!

DATA:
https://academic.oup.com/jcem/article/83/1/76/2865077
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC329619/
https://academic.oup.com/jcem/article/94/3/965/2596752
https://academic.oup.com/jcem/article/82/11/3700/2866019

Timestamps
0:00 Hormone effects from fasting
0:36 Adrenaline and fasting
2:03 Cortisol and fasting
2:33 Leptin and fasting
3:34 Insulin resistance and fasting
4:08 Serotonin and fasting
4:28 Growth hormone and fasting
4:57 Glucagon and fasting
5:28 T3 and fasting
6:12 Estrogen and fasting
7:21 Check out our keto recipe channel

In this video, I want to talk to you about how fasting affects hormones.

I’m going to compare the effects of short (2-7 days) and long (8-20 days) fasts. This data is not based on intermittent fasting.

Adrenaline - This is a counter-regulatory hormone. During short fasts, adrenaline can increase. During long fasts, adrenaline lowers. When adrenaline levels are high, you may experience poor sleep. It can help to take calcium citrate or calcium lactate.

Cortisol - Cortisol is a stress hormone and a counter-regulatory hormone that will help prevent blood sugar levels from dropping too much. During short fasting, cortisol can raise, and during long fasts, cortisol tends to normalize.

Leptin - This is a hormone that helps you feel satisfied. When leptin is up, you feel satisfied and not hungry. However, way too much leptin causes leptin resistance—this is common in obese people. In turn, leptin stops working, so you never feel satisfied after eating. Both short and long fasts will lower leptin, which helps fix leptin resistance and restore your satisfaction after eating.

Insulin - One of the biggest benefits of fasting is lowering insulin levels. High insulin causes insulin resistance, which causes even higher levels of insulin that can develop into diabetes. Both short and long fasts help reduce insulin.

Serotonin - This hormone increases with both short and long fasts. Serotonin has a lot of cognitive benefits. It will help you sleep better at night and feel like you’re in a better state of well-being.

Growth hormone (GH) - This is the anti-aging hormone. It protects muscle, collagen, joints, and skin. Most people over 50 are deficient in GH. Both long and short-term fasting will increase growth hormone.

Glucagon - This is the opposing hormone to insulin. Levels of glucagon are raised with both short-term and long-term fasting. Glucagon helps you burn fat and prevent weight gain.

T3 - This thyroid hormone will actually lower with all forms of fasting. However, this will not harm your metabolism because it causes an increase in reverse T3.

Estrogen - Fasting will lower estrogen levels. This usually isn’t a big problem unless you have low estrogen. If you have low estrogen levels, you can take natural vitamin E to help balance your estrogen.

Dr. Eric Berg DC Bio:
Dr. Berg, age 58, is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the author of the best-selling book The Healthy Keto Plan, and is the Director of Dr. Berg’s Nutritionals. He no longer practices, but focuses on health education through social media.

Disclaimer:
Dr. Eric Berg received his Doctor of Chiropractic degree from Palmer College of Chiropractic in 1988. His use of “doctor” or “Dr.” in relation to himself solely refers to that degree. Dr. Berg is a licensed chiropractor in Virginia, California, and Louisiana, but he no longer practices chiropractic in any state and does not see patients so he can focus on educating people as a full time activity, yet he maintains an active license. This video is for general informational purposes only. It should not be used to self-diagnose and it is not a substitute for a medical exam, cure, treatment, diagnosis, and prescription or recommendation. It does not create a doctor-patient relationship between Dr. Berg and you. You should not make any change in your health regimen or diet before first consulting a physician and obtaining a medical exam, diagnosis, and recommendation. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

Thanks for watching. I hope this video helped clear up the effects of fasting on hormones.