There are tons of questions about intermittent fasting, like these:
- Can intermittent fasting cause hormonal imbalances in women?
- As Metformin prevents your liver from producing sugar, will your liver be able to clean out the accumulated sugar?
I’ve read that IF can cause hormone imbalances with women, is this true?
While I know this is one study, I didn’t know if you’ve come across this through your program with other women? I’ve read about similar problems online with other women.
The reason I am asking is because I have been doing IF, 36-hour fasts every other day for 8 weeks with success. I have lost 15 lbs (7 kg) and my blood pressure has dropped. However, I am noticing hormonal problems with missed periods, and dry skin. Also a friend of mine, who is also doing IF, has begun to experience hot flashes. We are both in our late 40’s, and while we are getting close to menopause, it seems a bit early, and for us to suddenly start experiencing these symptoms when we began IF seems too coincidental.
While I am pleased with the results and I intend to continue with IF, I am wondering if you have any recommendations or suggestions? Perhaps a more modified intermittent-fasting approach?
Women can fast. That study is on rats. If you are a young rat, then maybe you shouldn’t fast. If you are a human adult, then yes, you may fast. We have had several thousand years of human history to guide us that yes, women may fast with equal efficacy to men. I’ve treated hundreds of women. Yes, some have problems fasting, but so do some men. There’s no difference.
Dr. Jason Fung
Since Metformin prevents your liver from producing sugar, will your liver be able to clean out the accumulated sugar?
I’ve been on strict LCHF for 5 months religiously per page 4 eating plan. Lost 20 lbs (9 kg) during the first 6 weeks, then stopped. I stuck with it and finally decided to go on Metformin a couple of weeks ago per Dr. William Wilson in Keto Clarity.
I read your info on Dawn Phenomenon and I’m concerned that Metformin will prevent my liver from dumping all the stored sugar. Just started intermittent fasting yesterday to jolt my system. Blood glucose was 165 mg/dl (9.2 mmol/l) before metformin and is now hovering around 135-155 mg/dl (7.5-8.6 mmol/l). I’ve never taken any other medicines for type 2 diabetes and don’t have any other symptoms of type 2 diabetes.
Metformin blocks gluconeogenesis. It is neither particularly harmful nor helpful for type 2 diabetes. It lowers blood glucose but does nothing for diabetes.
Dr. Jason Fung
Earlier Q&A sessions with Dr. Fung:
- How Much Should You Fast Once Type 2 Diabetes Is Reversed?
- “Do You Have Any Suggestions to Improve Sleep When Fasting?”
- When Should You Eat While Doing Intermittent Fasting?
- How Permanent Is the Effect of Intermittent Fasting on Insulin Resistance?
Many more questions and answers:
Read all earlier questions and answers – and ask your own! – here if you are a member:
More with Dr. Fung
His book The Obesity Code is available on Amazon.
His new book, The Complete Guide to Fasting is also available on Amazon.
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