Dracorana, a couple of things...
1. In the first post where I mentioned the BIA body fat scanners/scales (in answer to another user's question) I had thought that I was extremely clear that their accuracy isn't the same as a DEXA scan (which is SPOT ON)... but assuming you measure under the same exact conditions every time (including what you eat AND DRINK up 24-48 hours prior, as hydration and the contents of your digestive system do play a role, quite naturally... especially hydration since muscle tissue is composed mostly of water, which is why BIA works at all), then the DIFFERENCE (or rather, then trend over time) is INDEED accurate, which is kind of the whole point... to monitor your progress. So far, that's proven 100% true for me, and many others that have successfully used them by following those simple rules. Bottom line: they're great for monitoring body fat progress, and I would encourage ANYONE to use such a device if they're interested in monitoring CHANGES to their body composition to ensure that they're losing the right kind of weight... either that or they're welcome to get the right baseline every single time for $200 a week getting weekly DEXA scans (well, I weigh in once a week, so that's what it would cost ME)... hmm... anyhow, lol, either way, as long as the CHANGES are accurately monitored, then you're good to go. If I wasn't clear on my first post about BIA, then I apologize. (Incidentally, BIA is far more accurate than calipers... do some research on it... there's a wide discrepancy in caliper results between both the person taking the measurements, AND in where the fat is stored, as that varies from person to person as well, so the skin folds that are actually measured don't necessarily contain the right proportion of fat for everyone given a set body composition... BIA is light years ahead of calipers, not to mention much more convenient.)
2. You mentioned ketogenic diets... to be honest, I get kind of worried when people talk about those... PLEASE be SUPER CAREFUL with such diets... they do cause momentary loss of body fat, but they can be highly dangerous. Ketosis is not something to mess around with, because in order for your body to enter into that state you have to be void of carbohydrates (or at least in extremely short supply of them)... which means you're eating a lot of protein and fat. (Besides, you can't stay off of carbs forever, or you'll die... once your body runs out of body fat and can't produce ketones anymore, there's no more energy to be had, so it will then take it from vital systems until you die.) Of course, all of the various no-carb and low-carb diets out there know this and reintroduce carbs gradually, but there's still a lot of risk involved, especially for the obese and those with heart conditions. If I had started such a diet when I was 410 lbs, I probably would have died, since those diets nearly always see a massive spike in blood cholesterol until enough weight comes off to see the levels drop back down. This is why the American Heart Association and other reputable organizations have adivsed very strongly against such diets. Like I said, there's NO magic bullet. If you want to lose the right, healthy, and safe way with permanent results in mind... then you have to eat right, put in fewer calories than you burn with a combination of exercise and gentle calorie restriction, ensuring that your nutrition is sound and balanced. If you don't do it the right way, chances are excellent that you'll either hurt yourself, and/or gain all the weight back (so called "yo yo" dieting)... or in the best case, lose weight too quickly during the short term, more quicky than the skin can handle, and deal with extremely loose skin afterwards. Diets like this are fundamentally flawed in the sense that they are an exception to how you plan to eat for the rest of your life... so once "off" the diet, you "eat normal", resulting in old habits usually coming back, and so the fat does too... the psychology of it is simply flawed from the onset... it is far better to eat right, and to do so for the rest of your life... make the change permanent, and you will lose the weight naturally, and keep it off! The United States is undergoing an obesity epidemic... and since the introduction of all these fad diets, the problem hasn't gotten better, it's gotten worse. The real irony is that there are many organizations and government bodies, loaded to the gills with thousands of doctors and medical practitioners that are all screaming "eat right and exercise!!", but dieters almost always go with the single practitioner that says "I have the secret to your weight loss success"... it's ironic because the answer to this growing problem (literally and figuratively) has been right in front of everyone for ages... eat right and exercise. Period.
So if you choose to not eat right, but use a fad diet instead (which is your choice and your right), I just want to encourage you to please be super careful with that and do it under the supervision of your doctor.
1. In the first post where I mentioned the BIA body fat scanners/scales (in answer to another user's question) I had thought that I was extremely clear that their accuracy isn't the same as a DEXA scan (which is SPOT ON)... but assuming you measure under the same exact conditions every time (including what you eat AND DRINK up 24-48 hours prior, as hydration and the contents of your digestive system do play a role, quite naturally... especially hydration since muscle tissue is composed mostly of water, which is why BIA works at all), then the DIFFERENCE (or rather, then trend over time) is INDEED accurate, which is kind of the whole point... to monitor your progress. So far, that's proven 100% true for me, and many others that have successfully used them by following those simple rules. Bottom line: they're great for monitoring body fat progress, and I would encourage ANYONE to use such a device if they're interested in monitoring CHANGES to their body composition to ensure that they're losing the right kind of weight... either that or they're welcome to get the right baseline every single time for $200 a week getting weekly DEXA scans (well, I weigh in once a week, so that's what it would cost ME)... hmm... anyhow, lol, either way, as long as the CHANGES are accurately monitored, then you're good to go. If I wasn't clear on my first post about BIA, then I apologize. (Incidentally, BIA is far more accurate than calipers... do some research on it... there's a wide discrepancy in caliper results between both the person taking the measurements, AND in where the fat is stored, as that varies from person to person as well, so the skin folds that are actually measured don't necessarily contain the right proportion of fat for everyone given a set body composition... BIA is light years ahead of calipers, not to mention much more convenient.)
2. You mentioned ketogenic diets... to be honest, I get kind of worried when people talk about those... PLEASE be SUPER CAREFUL with such diets... they do cause momentary loss of body fat, but they can be highly dangerous. Ketosis is not something to mess around with, because in order for your body to enter into that state you have to be void of carbohydrates (or at least in extremely short supply of them)... which means you're eating a lot of protein and fat. (Besides, you can't stay off of carbs forever, or you'll die... once your body runs out of body fat and can't produce ketones anymore, there's no more energy to be had, so it will then take it from vital systems until you die.) Of course, all of the various no-carb and low-carb diets out there know this and reintroduce carbs gradually, but there's still a lot of risk involved, especially for the obese and those with heart conditions. If I had started such a diet when I was 410 lbs, I probably would have died, since those diets nearly always see a massive spike in blood cholesterol until enough weight comes off to see the levels drop back down. This is why the American Heart Association and other reputable organizations have adivsed very strongly against such diets. Like I said, there's NO magic bullet. If you want to lose the right, healthy, and safe way with permanent results in mind... then you have to eat right, put in fewer calories than you burn with a combination of exercise and gentle calorie restriction, ensuring that your nutrition is sound and balanced. If you don't do it the right way, chances are excellent that you'll either hurt yourself, and/or gain all the weight back (so called "yo yo" dieting)... or in the best case, lose weight too quickly during the short term, more quicky than the skin can handle, and deal with extremely loose skin afterwards. Diets like this are fundamentally flawed in the sense that they are an exception to how you plan to eat for the rest of your life... so once "off" the diet, you "eat normal", resulting in old habits usually coming back, and so the fat does too... the psychology of it is simply flawed from the onset... it is far better to eat right, and to do so for the rest of your life... make the change permanent, and you will lose the weight naturally, and keep it off! The United States is undergoing an obesity epidemic... and since the introduction of all these fad diets, the problem hasn't gotten better, it's gotten worse. The real irony is that there are many organizations and government bodies, loaded to the gills with thousands of doctors and medical practitioners that are all screaming "eat right and exercise!!", but dieters almost always go with the single practitioner that says "I have the secret to your weight loss success"... it's ironic because the answer to this growing problem (literally and figuratively) has been right in front of everyone for ages... eat right and exercise. Period.
So if you choose to not eat right, but use a fad diet instead (which is your choice and your right), I just want to encourage you to please be super careful with that and do it under the supervision of your doctor.