Medical Doctor Posted July 15, 2019 Report Share Posted July 15, 2019 Extreme fatigue, lightheadedness, brain fog, exercise intolerance and more - I require around 2000 calories a day to maintain BMI 17.5-19. Is this normal? Quote Link to comment Share on other sites More sharing options...
Dean Pomerleau Posted July 15, 2019 Report Share Posted July 15, 2019 Welcome Medical Doctor! It's not abnormal. I too have always required more calories than others seem to need to maintain a reasonable BMI, even before my relatively recent practices of cold exposure and plenty of exercise. My interpretation of the scientific literature, along with my own blood test results suggest it isn't low absolute calorie intake that triggers the beneficial CR metabolic response, but low net calories. If your diet and lifestyle are healthy and your net calorie intake keeps you thin, you are likely to enjoy whatever benefits CR has to offer humans, which may ultimately turn out to be quite modest, if you ask me. See this thread for discussion. In short, I wouldn't worry if you think you aren't able to cut calories enough. --Dean Quote Link to comment Share on other sites More sharing options...
Ron Put Posted July 15, 2019 Report Share Posted July 15, 2019 I am with Dean on this. But, is there an overarching benefit of aiming for BMI of 17.5. I understand it's a rough estimate, but it's likely encroaching on bone mass loss territory. What fat mass %? Quote Link to comment Share on other sites More sharing options...
mccoy Posted July 17, 2019 Report Share Posted July 17, 2019 I'm among the ones apaprently requiring lots of calories just for bodyweight mantainance. A little exercise also seems to burn a disproportionate amount of calories in my case. Quote Link to comment Share on other sites More sharing options...
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