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Re:How accurate are Americans at estimating calories? by stephengillie on Tuesday December 18, 2012 @11:04AM (#4938057)
Sure, these probably aren't necessary for people whose parents taught them proper portion size and diet control. But some of us grew up with parents who still fight eating disorders. Two tools were instrumental in teaching myself how much to eat:

1. Calorie counting app. I use MyFitness daily and record everything in it. The app gives me one number -- how many calories are remaining for today -- on which I can focus and remember. Other apps are probably as good, I've never tried. This really helped me learn how to control my portions and stay honest with myself.

2. Calorie counts on menus. When looking at fast food, I'll remember how many calories are remaining for today, and I'll often change my choices. I've chosen the 300-calorie cheeseburger over the 600-calorie double cheeseburger many times, mostly because the difference was listed on the menu.

One of my goals was to change how I thought about food -- instead of being a magic elixir, it became a game: I have 2000 calories to spend today, but if I spend 600 calories on this burger, I won't be able to afford the 400 calories of beer I want to drink tonight. This is because I've already budgeted 1600 calories across my other meals. I've lost 80 lbs this way and maintained this lower weight for months.

Re:How accurate are Americans at estimating calories? by bad_user on Tuesday December 18, 2012 @11:47AM (#4938293)
IMHO, calorie counting is not as important as carbs and fats counting on menus.

One of our greatest problems with dieting is that calories are not really equal and the effect food has on you really depends a lot on your particular metabolism. Maybe if you eat more than 2000 daily calories worth of stake and diary you get fat, but I can eat more than that without any effects whatsoever, while a single cookie ads 2 pounds on me (my body retains a lot of water after eating sugar).

And it's a problem because the common advice given to people doesn't work so well. Which is why dieting hasn't really caught on.

Personally I separate foods in dangerous (for me) and non-dangerous. I measure my weight every morning and I know precisely what types of food lead me to gain weight. For the non-dangerous kind I have no restrictions and eat as much as I please, as long as I don't combine it with the dangerous kind ... whenever I do that, I starve myself a little (for a day or so, eating some fruit and a yogurt), then it's back to normal.

Btw, I lost 44 pounds this year after cutting my sugar intake drastically + a dissociated diet that lasted for 4 months. Right now I'm happy that the diet is over and my weight has stabilized to the point that I eat whatever I like, except snacks (which I never liked anyway) and sugars. Of course I don't overeat, because I don't feel the need to do that anymore - somehow giving up on sugar has cut into my appetite.

Re:How accurate are Americans at estimating calories? by lrm242 on Tuesday December 18, 2012 @11:56AM (#4938327)
Calories are the only determinant as to whether you gain or lose weight. It's thermodynamics. 3500 calories deficit or surplus is approximately equal to 1 lb of body weight lost or gained.

Your body burns X calories per day to feed itself. If you eat less than this number, you will lose weight. Period. If you eat more than this number, you will gain weight. Period. Your TDEE or Total Daily Energy Expenditure can be easily estimated if your are so inclined, but it isn't necessary. Want to lose weight? Start at 2,000 calories per day. Monitor your weight across 4 weeks. If you aren't losing at a rate you're happy with, drop it to 1,800 calories per day. Repeat.

If you want to lose 5 lbs, you need a net deficit over time of 3500 * 5 = 17,500 calories.

Good/bad foods play a different role in your overall health, for example by impacting your level of water retention or satiety.

Re:How accurate are Americans at estimating calories? by taeric on Tuesday December 18, 2012 @12:05PM (#4938372)
The major catch there is that, if some common hypotheses hold, then where a calorie comes from has a direct affect on how your body burns it. The example commonly used is to say you need and consume 3500 calories to support your current level of activity. If you consume 600 that your body will only store, then your body will behave as though you still need an additional 600 to maintain your energy level. Likely leading to you being lethargic until you get additional food. (Which, as stipulated, you don't actually want/need to consume.)
Re:How accurate are Americans at estimating calories? by jdminhbg on Tuesday December 18, 2012 @12:02PM (#4938357)
I wish there were some way other than the impolite downvote to register just how miserable believing this broken logic made me for a decade.
Re:How accurate are Americans at estimating calories? by indiecore on Tuesday December 18, 2012 @12:04PM (#4938367)
Can you expand on that? Calories in/out has lost me a net 30 lbs.
Re:How accurate are Americans at estimating calories? by jdminhbg on Tuesday December 18, 2012 @01:41PM (#4938825)
The human body is not a bomb calorimeter. Simply cutting calories in (and running to try to increase calories out) reduced my energy and crushed my mood. My body compensated for lower input with lower output.

Cutting out sugar and grains, on the other hand, improved all of those things, and dropped 50 pounds off me despite actually cutting out the running as well. I never had to count anything; without the broken satiety mechanism, I'm not going to accidentally eat 20 oz of steak like you might accidentally eat a half a pound of spaghetti.

This is the point where you say "ok but that's just a trick to reduce your calories in," but that's entirely the point: calories in and out is descriptive, not prescriptive. Thermodynamics says that if I am losing weight I am consuming less energy than I am expending; it does not say that if I consume less energy that my expenditures will remain constant and fat will disappear.

Re:How accurate are Americans at estimating calories? by bad_user on Tuesday December 18, 2012 @01:06PM (#4938663)
I lost 44 lbs on a disassociated diet, which is now over and my weight is stable by abstaining from sugar, as otherwise I only try to eat healthy, but I do not count calories or whatever.

Congratulations on your 30 lbs loss. Unfortunately not many people can abstain from eating. For some people it's a source of depression.

What works for you doesn't necessarily work for somebody else - and have you noticed how some people can eat whatever they want without getting fat? Freaking bastards.

Re:How accurate are Americans at estimating calories? by indiecore on Tuesday December 18, 2012 @01:10PM (#4938690)
>I lost 44 lbs on a disassociated diet, which is now over and my weight is stable by abstaining from sugar, as otherwise I only try to eat healthy, but I do not count calories or whatever.

It doesn't matter if you count it or not if you lost weight you were taking in less energy than you were expending.

>What works for you doesn't necessarily work for somebody else - and have you noticed how some people can eat whatever they want without getting fat? Freaking bastards.

Those people are a myth and it's been proven, they just consider "eating a lot" to be less than the amount needed to get them to gain weight. I mean I could eat 2000 calories of chocolate everyday and aside from the massive problems related to not getting enough vitamins/macros I'd still be losing weight.

Anyway congrats on the weight lost, we're all gunna make it bro.

Re:How accurate are Americans at estimating calories? by bjourne on Tuesday December 18, 2012 @03:02PM (#4939282)
Really? Then couldn't one subsist by just eating one or two bars of chocolate per day and some vitamin pills? Or maybe a liter of coke per day would work just as well? It would be a very cost efficient way of eating as both candy and vitamins are cheap around here (well, not vitamins but a bottle of pills last a long time).

I've always assumed that that wouldn't work which is why I'm skeptical to your "it's all about the calories" argument.

Re:How accurate are Americans at estimating calories? by guga31bb on Wednesday December 19, 2012 @10:52AM (#4943089)
Re:How accurate are Americans at estimating calories? by bjourne on Thursday December 20, 2012 @12:47PM (#4948912)
Thanks! It's nice to be proven wrong sometimes.
Re:How accurate are Americans at estimating calories? by indiecore on Tuesday December 18, 2012 @03:59PM (#4939545)
Well chocolate doesn't actually have that much to it (a regular chocolate bar is only like 250 calories) so it'd have to be more than two bars a day.

The main problem (as I'm told) with eating nothing but pure calorie sources supplemented with...uh, supplements is that the cost of the supplements is very high. Remember you need protein, carbs(I guess these wouldn't be in short supply on the candy bar diet) and fats plus micronutrients too or your body will start to break and those supplements aren't cheap.

I do know people that subsist mostly on protein shakes, rice and various supplement pills when they are doing hard cuts for body building competitions and while it's stressful on your body you aren't going to die from it.

Re:How accurate are Americans at estimating calories? by stephengillie on Tuesday December 18, 2012 @12:14PM (#4938419)
Agreed -- the method I explained was just calories in/out. The problem I had was that I didn't have enough data. The app and calorie counts on menus give me the data.
Re:How accurate are Americans at estimating calories? by peterb on Tuesday December 18, 2012 @01:00PM (#4938634)
Then why do type 1 diabetics only count carbs? A diabetic can eat as much protein, fat and fiber as they want, but have to match insulin levels to their carbohydrate consumption (except fiber).

I'm highly simplifying, but carbohydrates are converted to blood sugar which insulin converts to energy at a cellular level. Insulin is needed so your cells can feed off the blood sugar. The blood sugar that isn't used is stored as fat. Carbs are quickly and easily converted to fat. Other forms of food can eventually get converted to blood sugar, but not as easily and quickly as carbs. You absorb protein, minerals, vitamins, fibers, etc. very differently than pure Carbs. So a Carb rich diet will make you fat. Diabetics are only concerned with Carbs because they have the highest impact on their blood sugar level.

Further, America has proved this. Few cultures consume as much carbohydrate rich food as America, and as a result, they have the biggest issue with diabetes, obesity, etc. Carbohydrates are the cheapest food to buy (fast food and junk food are very heavy in carbohydrates), so a disproportionate number of low income people have obesity problems

Dude, its the carbs.

Re:How accurate are Americans at estimating calories? by lrm242 on Tuesday December 18, 2012 @01:16PM (#4938716)
Diabetics have to manage insulin levels. They manage their carb intake because of this. It has nothing to do with managing their weight.

With respect to obesity you might consider what you just said: carbs are abundant and cheap. Therefore, people tend to eat a lot of them. Significantly more than they should. Carbs also do not tend to induce a level of lasting satiety that protein or fat does (note, 1g carb = 4kcal, 1g protein = 4kcal, 1g fat = 9kcal). So not only do people tend to eat a lot of carbs but they also tend to eat them more often because they don't feel full for very long.

Re:How accurate are Americans at estimating calories? by DanBC on Tuesday December 18, 2012 @04:11PM (#4939615)
Simple carbs will be converted to sugar quicker than complex carbs, and quicker than protein or fat.

But if you eat calories - in any form - that you don't need then you're going to store those calories.

And you're incorrect when you say that diabetics are only concerned with carbs. Diabetics cannot eat as much fat as they like, and are warned to eat a "healthy diet".

Re:How accurate are Americans at estimating calories? by pron on Tuesday December 18, 2012 @12:28PM (#4938497)
Not really. Obviously, preservation of energy must hold, but body weight isn't just a function of calorie intake because metabolism is regulated by hormones, which affect the rate of calorie burn and fat tissue formation. Human metabolism is far from being completely understood.
Re:How accurate are Americans at estimating calories? by wpietri on Tuesday December 18, 2012 @02:58PM (#4939269)
Re:How accurate are Americans at estimating calories? by jaredsohn on Tuesday December 18, 2012 @12:03PM (#4938362)
Shouldn't you expect to lose that water weight at some point though? Longer term weight gain should be calories in - calories out. What you eat might affect how full you feel (which could cause you to overeat in some circumstances), and macros matter if you're trying to build/maintain muscle.

My understanding is that peoples' weight problems are that they underestimate the calories of what they eat (related to specific foods or portions or forgetting details like the butter used for cooking) or overestimate that caloric effects of exercise.

Re:How accurate are Americans at estimating calories? by bad_user on Tuesday December 18, 2012 @12:47PM (#4938582)
Overeating may be the big problem, but abstinence from overeating is not really feasible for most people (it's depressing, really) and the truth is there are better ways of tackling overeating at the core. For me the interesting question is "why" we overeat.

For instance by eating healthier foods, instead of sugars and snacks filled with fats and refined carbs, you tend to feel less hungry. The theory behind it is proven actually, because sugars and refined carbs burn too fast, leaving you either with an empty stomach that wants more or with fat deposits from all the food that didn't burn at the same rate.

Re:How accurate are Americans at estimating calories? by klochner on Tuesday December 18, 2012 @12:47PM (#4938584)
Water weight may make it harder to track your "true" weight, but that shouldn't affect your eating decisions.

More specifically, your water retention will fluctuate up and down within a narrow band depending on your diet, but you will never put on 40 pounds of water weight.

It's similar to limiting your how much water you drink so that you don't have all the liquid in your belly making you heavier.

Re:How accurate are Americans at estimating calories? by bad_user on Tuesday December 18, 2012 @12:50PM (#4938605)
Water retention is also a warning sign that something's wrong (like a hormone imbalance, one of the biggest causes for water retention) and you should probably take it easy. Fat people retain a lot of water. When people start a high-fat diet the first 5 pounds or so are from all the water loss (or even more).

> It's similar to limiting your how much water you drink

Not at all. In fact when dieting it's good to drink a lot of water, precisely to stop your body from retaining it. Odd, isn't it?

Re:How accurate are Americans at estimating calories? by klochner on Tuesday December 18, 2012 @02:29PM (#4939102)
aside from hormone imbalances, why do you care at all about water retention?
Re:How accurate are Americans at estimating calories? by bad_user on Tuesday December 18, 2012 @03:51PM (#4939512)
Because hormone imbalance is the primary reason for why some people are fat and some aren't, being the reason for why type 2 diabetics can die of hunger while still being overweight.

Do some reading on the subject dude.

Re:How accurate are Americans at estimating calories? by dguaraglia on Tuesday December 18, 2012 @01:15PM (#4938715)
You should be able to get a relatively accurate number by always measuring your weight first thing in the morning, before drinking anything. You have to be careful not to get fooled, this is some kind of "best possible scenario" because your body loses a lot of water through perspiration during the night, but it'll give you a somewhat solid baseline.
Re:How accurate are Americans at estimating calories? by Shorel on Wednesday December 19, 2012 @10:11AM (#4942889)
IMHO fats is too generic.

Do you mean unsaturated, polyunsaturated or saturated fats?

Margarine or butter?

The answer is just as significant for any diet as the carbohydrates quantity.

Re:How accurate are Americans at estimating calories? by rwmj on Tuesday December 18, 2012 @11:40AM (#4938255)
I think the fact you're looking at fast food menus could be the problem. Cook food from scratch -- it's fun and healthy.
Re:How accurate are Americans at estimating calories? by danielgrieve on Tuesday December 18, 2012 @11:43AM (#4938274)
Don't assume as much, as recent as today: http://www.bbc.co.uk/news/health-20713985
Re:How accurate are Americans at estimating calories? by ovi256 on Tuesday December 18, 2012 @01:03PM (#4938647)
A chef meal will be different from a home-cooked one. Chefs are known to go for things like lots of fat (which acts as a base for spice flavor), sugar, caramalizing (to improve taste) and other things that add taste but also calories.
Re:How accurate are Americans at estimating calories? by stephengillie on Tuesday December 18, 2012 @12:19PM (#4938443)
My mom cooked from scratch. She fried chicken, put lots of butter in the mashed potatoes, put butter in vegetables, always had gravy, etc. But "it was ok because they're low-sodium low-cholesterol heart-healthy home-cooked recipes".

Just cooking from scratch by itself doesn't solve the problem. You have to ensure you're using healthy ingredients.

Re:How accurate are Americans at estimating calories? by bjourne on Tuesday December 18, 2012 @11:32AM (#4938205)
That sounds like a great idea and I've been looking for something similar to try and lose weight. But if you eat out a lot and the calorie count is not written on the menue, how are you going to record it? For example, if you order chicken with rice, that may be a fairly healthy choice except if there's to much cream and butter in the sauce.

Eating healthy definitely is hard. Also can you link to the app? My google-fu is failing me.

Re:How accurate are Americans at estimating calories? by drm237 on Tuesday December 18, 2012 @12:00PM (#4938345)
Re:How accurate are Americans at estimating calories? by streptomycin on Tuesday December 18, 2012 @11:37AM (#4938237)
Calorie estimates are never perfect, but a rough estimate is much better than nothing.
Re:How accurate are Americans at estimating calories? by CodeCube on Tuesday December 18, 2012 @11:18AM (#4938127)
Congrats on meeting your goals!
Re:How accurate are Americans at estimating calories? by drivebyacct2 on Tuesday December 18, 2012 @12:11PM (#4938395)
How did you determine your target caloric intake value? I recently graduated and had a moment of self-realization as to how poor my diet was the last semester off campus and without a meal plan. I'm determined to do something about it, but health and fitness have never been my strong suit.
Re:How accurate are Americans at estimating calories? by jaredsohn on Tuesday December 18, 2012 @12:17PM (#4938435)
Use a calorie calculator such as http://www.freedieting.com/tools/calorie_calculator.htm or http://www.1percentedge.com/ifcalc/ and then adjust based on if you want to gain or lose weight.

Also, check out the reddit/r/fitness FAQ: http://www.reddit.com/help/faqs/Fitness for answers to other questions you're likely to have next.