Dr Stacy Sims - world renowned physiologist, nutrition scientist and researcher
WOMEN SHOULD NOT DO INTERMITTENT FASTING; says Dr Stacy Sims - a world renowned physiologist, nutrition scientist and applied researcher. In this episode Stacy discusses how Intermittent Fasting is NOT advisable for women, carbohydrates are NOT bad for women and that often women trying to lose body fat should consume MORE calories.
As well as discussing nutrition, we also talk about recommended exercise strategies for women at different life stages when our hormonal levels change - including the importance of lifting heavy weights.
Stacy’s research specialises specifically in sex differences in training and nutrition. She is an author of the popular books ‘Roar’ & ‘Next Level’, researcher and all round Women’s Health expert. In 2019 Stacy delivered a Ted Talk entitled Women are Not Small Men. This now has nearly half a million views and is still growing.
This is an episode not to be missed.
You can find more information on Stacy on her website - www.drstacysim...
Пікірлер: 109
Thank God for these women. I felt terrible doing intermittent fasting, no energy and my hair was falling more than usual.
Bottom line…I want what she’s having. She looks the healthiest and strongest to me. Shows up grounded with clarity. Sharp. Happy. Kind. She gets the nuances. That’s a difference between good science and poor science. One needs to be able to discern the difference before bringing up studies.
Direct from fast like a girl by Mindy Pelz… Day 20-30 of your cycle (Luteal phase) | No fasting! This is the lead-up to when menstruation starts. Be gentle with your body and focus on eating plenty of high-quality carbs, healthy fats, good proteins, and other foods that will make you feel good. Now I love Dr Simms but thinks we should make sure we are referencing correctly..
@llkoolbean4935
3 ай бұрын
Thank you for the clarification. They need to correct it.
Mindy Pelz doesn’t say to fast in the luteal phase, she says NOT to fast in that phase and increase carbs.
Well now that is science! Did not know that research was mostly on men and that our metabolism is so different. Thank you, thank you!❤
One of the best interviewers. Thanks for asking questions I’d not heard others ask. Thanks for asking about older women lifting hard.
I thought something was wrong with me cause that’s how my body reacted when I tried to intermittent fast and restrict carbs too much! No energy and I slipped into a depression and gained more weight! I think a lot of it depends on what type of carbs you’re trying to restrict too!
Fasting for 18 months broke my metabolism 😢 I lost weight at first and felt great - I was running etc etc but it all caught up to me. Eventually, I suffered from intense fatigue, belly fat, poor sleep, sensitivity to carbs etc etc. now, I’m eating and lifting to build my metabolism back up.
@Onajourney519
19 күн бұрын
That's due to over fasting and you're not supposed to always be fasting. All these experts don't know everything, they all contradict eachother and I don't think they're all wrong. I think fasting has a place I've always fasted but not all the time! It broke my sugar cravings. I think it offers many healing property's it's all about what your goal is.
As a 68 year old woman who has already had 2 spinal fractures due to osteoporosis I wish I could find a trainer I could trust to teach me to lift weights. I do press ups and I have developed some muscles in my upper arms and I do Pilates to try to build core strength but my physio told me not to do weights and now I really want to. My aim is to have more muscle at 70 than I did at 60!
@candrad
5 ай бұрын
I’m in the same boat and I’m 70 now! I was told that when I was 66 and I have deteriorated since! I don’t think I should have listened to him and now I really am afraid to do anything,at all!A little cardio is about it for me and I’m afraid to step off a curve in case I lose my balance. I don’t want to but I know I will probably have to use a walker soon!
@poolfield2
5 ай бұрын
@@candrad seeing a physiotherapist got me feeling confident about daring to move, she worked on balance, core strength, flexibility and confidence. I’m definitely not going to need a Walker anytime soon! Seek help if you can possibly afford it!!!!
@monicadechering9489
4 ай бұрын
@@candradone of the things you can do is work on the eccocentric motion. For example, stand on a step with railings if you need, and take 3 seconds to step down. That will help.
@claudiawilkinson8769
4 ай бұрын
Look up the X3 Bar from Jaquish Biomedical. He previously developed a machine that helped with osteoporosis.
@jamiesouza
3 ай бұрын
@@candrad you absolutely can build muscle but you have to get 1 gram to 1.6 grams of protein per pound of ideal body weight. I have to supplement the extra protein. I also take 10 grams of creative!! You can do it!!
Love Dr Sims! Great podcast, great questions. Wish every woman on a planet would listen to her or read her books!
Thanks for your clarifications on the impact of intermittent fasting before sport, the importance of sufficient protein, how lifting heavy weight helps to offset our menopause loss of estrogen....and that most research, that is typically referred to, is based on samples of male 🙏
I did fasting pre peri menopause but everything changed. I’ve gone back to eating, totally agree with this.
Just started listening, but thank you for bringing up mindy pelz as I was wondering about what she has been saying and if it applies.
Nice info, I picked (and actually wrote down) a lot of usefull stuff for my mom! PS having timestamps will IMO help with the channel growth =)
That's not what Dr.Mindy says. It's exactly the opposite. She says NOT to fast during luteal phase nor ovulation.
Oh mylanta! First I hear its great to fast and then I hear the opposite. Well I personally am fasting 18 to 20 hours and it works for ME. I am losing weight slowly and steadily. I feel great and plan to continue in sync with low carbs and regular exercise.
Finally!!!!! I’ve been waiting for this. I listen to Attia and these other guys and I’ve been spinning my wheels for 2+ years thinking it’s just me getting old. Now where can we go to get help? My trainer who writes my programs listens to all opinions based on male oriented research. He did tell me to fuel before workouts. And that works for me. I did IF for several years and saw no benefits.
@1timbarrett
27 күн бұрын
I wonder what Prof Bart Kay’s would say about Dr Sim’s stance on carbohydrates for women. 🤔
@TRUTHwithoutapology
24 күн бұрын
Same for IF except that it led me into following circadian rhythm and timed feeding.
Thank you, thank you. I just went and bought Stacys Book for women in menopause.
mindy pelz does not promote mid-late luteal phase fasting at all. she writes in her book that app 7-10 days prior to bleeding woman should not fast at all and she should consume healthy carbs. so this is wrong information here. pelz says, you can basically fast in the first 10 days of your cycle which is the folicular phase. then max 15 hours per day in ovulatory phase. then day 16-19 again fasting tolerance and from day 20 - no fasting whatsoever. i wonder... what woman is considered active ? how much of strength training per week & other fitness activity is necessary to shift towards greater amounts of protein ?
@heatherripley3692
4 ай бұрын
Yes, that is what I understood as well. This doctor is now confusing me. Did she mean otherwise, perhaps?
@NiniskoMueller
4 ай бұрын
@@heatherripley3692 i have read, heard and tried so many good sounding explanations regarding food & training... from macrobiotics, raw food, veganism, vegetarian, high protein and fasting... and by now I listen to my body. We (me & my body) have build up decent communication in the last 17 years (am 40 by now) that I can pretty much rely on its signals. I like fasting, I like eating, training fasted feels weird, drinking alcohol too, standard american diet & coffee would turn me into moody hurricane... i am very active during my day so for health sustainance (my training goal) i really dont need cardio. I lift weights 45 min, do 10 minutes interval warm ups and stretch 5 min. Thats it. Thaaaaats it. I do breathing exercises, they benefit me greatly. The rest is living and being happy with myself and not trying to be perfect in any way. That gives freedom and peace.
Thank you for this wonderful interview with the amazing Dr Sims. It feels like you need a Part 2 soon please.
It’s sad that Dr Stacy read ‘Fast like a Girl’ but got her facts the other way around. Dr Mindy says to go slow during luteal phase in your workout and NOT to fast during this time. So this knocked off a few points of respect I have. But I hv to say she looks amazing (those arms). Would love to see how she manages her menopause when it comes. What about zone 2 cardio? Does it burn more fat for post/ peri-menopausal women?
Thank you for challenging my knowledge from Pelz's Fast Like A Girl and providing a scientific basis for what actually happens to women's bodies. Been listening and learning a lot about nutrition and working out from Zoe Podcast, where I first saw Dr Stacy T. Sims. I loved Glucose Revolution, by Jessie Inchauspé, which changed my whole outlook on food eating order and an awareness of glucose's role in physiology. This episode supports what those other scientists are discovering about not just human health, but also human adult female health ❤
@mettacognatus5849
4 ай бұрын
Where's the cientific research?
@Catty19748
14 күн бұрын
Yes glucose revolution Jesse is great. It was the only way that helped me finally give up added sugar (cos i was an addict), and I lost and still am losing weight because of it.
Would love to Dr Sims thoughts on Not Little Women, Women with terrible metabolic health including insulin resistance, women with disordered eating… These 3 groups (filled with individual differences) are frequently seeing better outcomes, better health, finally control of their waist line and a less frantic and emotional relationship with food. Another topic, which for those women that choose to become mum’s turns into an every waking minute topic is non stop contact with food and feeding… as kids and family eating on top of her own present another issue that is the weight gain from unintentional calorie surplus eating food that fussy, neurodivergent little and big kids far too often reject. I love that this conversation gives women’s nutrition and the timing of that it’s rightful own podium but these bold black marker strikes seem to be potentially retraumatising already led astray women of the “aerobics is for women, lifting is for men” “fat free but full of sugar is fine” era. Aren’t we now similarly ignoring that reduced carbs and intermittent fasting that’s been successful for many in the overweight and obese category their metabolic health back. Those that rebound have either additional disordered eating or not enough transfer of empowering knowledge about why these ways of eating have worked for them and how they can ease off the protocols without returning to the yo-yo life of sugar crashes and cravings and the impact of a gut microbiome that’s out of balance again.
I have a total different reaction when I do intermittent fasting. I feel energetic and happy those days and when I eat breakfast I get tired and sluggish. So I stick to intermittent fasting 4-5 days/week like I have the last 4 years.
@lisabeeke7162
5 ай бұрын
Ditto😊 game changing for my skin and gut...wishing you well.
@teresamexico309
5 ай бұрын
TRE (time restricted eating) 14 to 15 hours (last meal ends at 6 pm and first tea between 8-9 am) and it does wonders for my gut, my body and my mind. Longer fasting time is just not for me. I am fit on the skinny side (normal weight but in the lower limit) and I work about 4 hr on a steep garden most every day.
@fammue
22 күн бұрын
Absolutely agree to this, feel like a monster during fasting in my fasting windows of the cycle and autophagy. I do agree that I can't lift as heavy on an empty stomach though when autophagy hasn't kicked in yet. I think, the reason women feel like shit when fasting is because 1) their bodies are not used to it, but used to only perform within the sugar burning system 2) suffer from insulin resistance and metabolic syndrome 3) have many toxins in liver, brain, gut and adrenals that need to be dealt with 4) have damaged mitochondria that need to be repaired by -surprise- fasting!
@bonmotze
13 күн бұрын
I can understand that women might feel better on a morning fast when their usual first meal would be unhealthy but why on earth do they feel like "monsters" when eating smtg healthy and nutritous? That doesn't even make sense at all. It sounds a lot like that you don't want to give up your beliefs though. The research just doesn't support that IF is good for women and all what Dr. Sims says makes so much more sense to me, it feels natural to fuel for the task ahead
@Jamie-yz9xv
13 күн бұрын
I am with you. IF has improved energy levels, mood, and overall wellbeing. In my youth I followed various latest “health” regimes and always felt awful but when I ate meat and did IF before it was a “thing” (I didn’t realize I was IF) I always felt better but was gaslighted (told I couldn’t possibly feel better eating meat and missing breakfast) but I did. Now there are more people and more accessible data that affirm all along what I felt despite the “experts” claiming I couldn’t possibly be feeling better or be healthier. Fasting for several days (water & electrolytes only) has also been a game changer, especially for my skin.
Thank you for interviewing Dr. Sims. It would be interesting to know the. background to Dr. Pelz's work. She does site references and has worked with many women. Might there be different needs for different types??? Can't refute science, but how much variety is there in the participants in the research?
@jt8142
Ай бұрын
Mindy Pelz is a chiropractor not a scientist (PhD) like Dr Sims
Who are we to believe these days? Seriously annoying. The contradictions we hear in nutrition are mind-blowing. No one knows anything, it seems.
People say they feel amazing on fasting 😂 its due to your body pumping out adrenaline and using up your liver and muscles glycogen stores (its much easier to use than breaking down fat) Don't worry, you'll feel great for a few years and then your adrenals and liver will take the burden of the toll of starvation. IF can definitely allow certain healing to happen of the lining of the gut etc, but I'm curious when people are going to stop starving themselves 😅 I was keto and did IF under the guidance of people that created programs for them for 15 years and it tanked my adrenals, my nervous system was fried and my liver stopped storing glycogen stores so I could sleep. Keto and IF did nothing for my mental health issues or hormones either. Why would they? I'm irish and my ancestral lineage is based on healthy carbs, good fatty and lean meat cuts and eating when hungry. Don't worry...these starvation techniques will come back to harm many in the end.
@1timbarrett
27 күн бұрын
I would love to learn more about your sleep disturbance. How long did it last? 🤔
Great interview!!! 👏🏻👏🏻👏🏻
Thank you for this amazing podcast! I needed to hear this.
Wow! Dr. Sim's, I have been a skeptic about what doctor's tell me for more than 35 years. My dad, who worked in a hospital for than many many years, tainted my perceptions of doctors who aren't, also, scientists. He said, "An MD is just a technician, but an MD who has a PHD, is the better diagnostician." On the other hand, I do know many physicians who do their research and do care about helping people heal. However, now I will, for sure, question where the data came from. Thank you, for offering the picture on the other side of the coin: the female side. Again, thank you!
I would like to see her debate ben bickmen or Jason fung
@1timbarrett
27 күн бұрын
Or Bart Kay’s…! 😮
@1timbarrett
27 күн бұрын
Sorry, ‘Bart Kay’…
LOVE YOUR APPROACH, BRILLIANT INTERVIEW, THANK YOU! MORE PLEASE!
Thank you Dr. Sims, I like that more studies are being done in women and that you are sharing this with us. For TRE you can also have 16:8, 14:10 and 12:12 the way I understood it from the circadian code by Dr. Sachin Panda. I think fasting has it's place as a christian, there are seasons of fasting not necessarily for physiologically health, but rather spiritual health, though indirectly benefits the body.
Thais so wrong what you said about mindy pelz. She says precisely NOT TO FAST IN THE LUTEAL PHASE - I’ve read her book twice and you probably never did since you are talking absolute nonsense. It’s not true what you are saying. Please check your facts next time better !!
this is the best session on a podcast with dr. sims coz u ask all the right questions! thank you for that! really appreciate it ❤😊
This a great podcast - informative, well hosted and with great guests. 👍How does it not have more subscribers?
I am age 60 and intermittent fasting did not work for me! I felt horrible. I eat a high protein breakfast and small amount carbs and I feel very energetic. I also have protein and small amount carbs for lunch and for dinner protein, kimchi, and Ezekiel muffin.. I feel having carbs in the evening help me sleep better. I do always focus on getting my protein in first with each meal that is a priority.
Does anything change in female menopause?
Sorry, but someone who knows, Dr. Mary Claire Haver who is an EXPERT on women and menopause, as well as so many other experts, say IF is the perfect thing for women. Different cultures/religions have used it for centuries.
@serkisofi1041
3 ай бұрын
Then why cant we lose any weight?
This is so so helpful x
This is great & informative. Thank You both 💞🧬♾️
Thank you ! Dr Stacy..for making me understand abt our health 🙏❤
Just discovered you. What a wonderful interview you conducted! Thank you to both of you!
I’m post menopausal and intermittent fasting has changed my life and my body!
IF played havoc with my gut. I was 6 yrs postmeno when I did 16:8 for 4 months. Distention, gripping gut pain, totally lost hunger cues. It took a yr to recover. Clearly, not great for everyone. I was attracted to the claims on autophagy.
What about ketones? I only got them when I fast for 17-18 hours.
You started talking about tamoxifen and what it does and how maybe to combat that. I would be interested in hearing more as i have had a cancer diagnosis and will have to start taking tamoxifen. I am very worries i will gain weight and loose muscle mass
Would high intensity also include high intensity cardio ? Also, thanks so much for all your research specific to women.
@TRUTHwithoutapology
24 күн бұрын
Her definition of high intensity is different than excessive gurus. She defined it on the Huberman podcast.
Would love the two together dr Mindy and dr sims
And what for us doing it for the autophagy?
Great episode! How would you suggest handling a strength workout in the morning before work? Would you eat something when you first wake up (if so, what?), then lift weights, then eat something again (more hardy this time) within 30 mins and then get ready for work? Or would you advise against that and strength train after work?
@louisesingleton7104
5 ай бұрын
Stacy advises 15g protein prior to resistance workout in the morning. then have breakfast after your workout with 40g protein. You can hear her talk about it in lots of other podcasts (Danica Patrick and Gabrielle Lyon). Hope this helps.
Now that I’m in menopause I absolutely have to do intermittent fasting and low carbs…
I usually look at how great the person looks when they are promoting fasting. I do not want to look dry and old. and my assumption would be not taking their advice at all . and I can see how fasting damage their body by their appearance, reset once in 2 years time is good. weekly and monthly ? even Dr Peter said he stop doing fasting, he said he used to do it , and lost a lot of muscle mass..... and he looked sick back few years ago... now he looks healthy.
Would love to listen this conversation with Riley Gaines and Lea Thomas included as it relates to performance - 3 biological women and 1 “trans woman” discussing the physiology, hormones and gamete’s as “she” trounces everyone in the country - start there with your “sport science”
It worked for me ,I carry heavy,I do hiit 2 times a week and stop eating anything after 7:00 pm
What does she recommend for postmenopausal women who would enjoy longer hikes and bike rides that put you into a moderate heart rate zone if we’re only supposed to do sprint interval training
@TRUTHwithoutapology
24 күн бұрын
She discusses this at the end of the Huberman podcast.
@Mona-Faye
24 күн бұрын
@@TRUTHwithoutapology thx! Don’t have a link to that or what date was it?
Please re-read ‘Fast Like A Girl’. And please don’t feel I’m playing Miss Know-It-All. just this afternoon I was reading Dr John Yudkin’s 1958 classic, ‘This Slimming Business’ and I couldn’t get it through my head that the man was actually arguing FOR the CICO equation as valid and applicable to weight loss…!😮
We know why other podcasted aren’t having dr Stacy sims …. They scared
Im 52 vand I get bulky because im on quetiapine.. I have ME so I can't do catfio but I'll try this program. Anyway.
I personally wouldn't throw out fasting irs helped me with braking my sugar addiction. I see it as a tool it's not something you should always do it's a tool
I cringed at Dr. Simms when she misquoted Dr. Pelz so significantly. Dr. Pelz says the OPPOSITE and recommends not fasting in the luteal phase. This honestly took away so much credibility from Dr. Simms for me..
Where's the cientific research?
What is Fasting? Fasting Is a Deep Spiritual Encounter With God the Father, After Jesus Finished his Fasting, He Was Given SUPERNATURAL Power/ Miracle to Heal, the Sick, Raise the Dead, Cleanse the Leper, Open the Eyes of the Blind, Which Means, Spiritual Understanding of God's Word. WISDOM.
BETTER Podcact would be, Dr. Rhonda Patrick and Dr. Simms.
Totally disagree regarding her view of Intermittent fasting. It’s clinically proven that it works both for men and women. Fasted training is good for both genders ! 16:8 fasting, along with balanced diet and exercise works wonders. Dr Jason Fung has evidence based case study on this. That’s why fasting is practiced in many religions. Being a doctor by profession and I have lost weight myself with this method- I can confidently say that her statements are totally misleading. I am not saying everyone needs to follow fasting method. There are other methods to loose weight. But she has no scientific evidence to support her reason for opposing fasting. Even Endocrinologists are recommending fasting for Insulin resistance and Diabetes. She should do more research 🧐
@robotworm178
19 сағат бұрын
You can change the speed in the settings if she was talking too fast for you.
@waterlily5670
10 сағат бұрын
@@robotworm178 I listened well and correctly understood what was said. Don’t you worry !!!
OMG!
No the boys don't need to be around when they talk about perods. It's not an illness.
Iam sorry, I don't agree with you dr.stacy. Iam not an expert in nutrition of course, Iam a pianist. I did the intermittent fasting for a couple of weeks now, with 20 hours fasting time, and feel never been better before. I hv more strength doing my daily activity, can think clearer, all my bloating is gone, I don't feel often sleepy. Pls, you maybe should give us all more accurate data about your unordinary point of view 🙏
@heather6679
3 ай бұрын
A couple of weeks isn’t enough time to have accurate data.
This was a hard listen and not for the lay woman at all. Too much Physiological talk😅Not a lot of practical advice!