does food realy make you fat

We have the first law of thermodynamics conversation of energy. Briefly energy cannot be created or destroyed only converted from one form to another including being stored or released from storage. If if you find a situation where energy appears to be being created it is being released from storage instead. This is true of burning things, radiance from the sun and nuclear power.

So as this applies to the body the energy released by digesting the food eaten minus the energy used must equal the (incremental) amount stored as fat. In any given time period if this difference is positive (more taken in than used) that will correspond to increase in fat and if the difference is negative (more used than taken in) that ill correspond to a decrease in fat.

So if two people eat the same number of calories as each other and one gets fat and the other doesn't then the difference must lie in the amount of energy used by each person. A difference in obvious and measurable physical activity may be part of the difference but there will likely be differences in BMR which, while it can be measured, is more generally estimated and maybe not very accurately. The obvious explanation for studies that found that some people, at least, maintain a stable weight in the face of large changes in calorie intake is that the body balances those with similar changes in energy use. That is a far more believable explanation that one that suggests we have found a unique exception to basic rules of physics.

The amount that people eat when just left to themselves without thinking about calories varies enormously. Left to myself, I'd easy eat 3000-5000 calories a day. One of my friends who "eats whatever he wants and doesn't gain weight" consumes more like 1900-2200. I've actually observed and calculated this for several people. He eats almost nothing but junk food and fast food. He just doesn't eat nearly as much of it as I tend to.

It is interesting to consider the possibility that the people eating the junk food don't get fat not despite eating the junk food but because the eat the junk food. The current obesity epidemic seems to have really taken off since low fat eating has become mainstream. There are at least a couple of theories that relate to this:

1. Fat is often replaced with sugar to make a tasty product. It has been proposed that sugar and other highly refined carbs create a hormonal environment that causes enegy to be stored rather than used, i.e. they reduce BMR.

2. It has also been suggested that fat plays a role in saiety. So the skinny person who eats the meal full of fat feels full on a smaller portion (and fewer calories) than the person who opts for the low fat meal. We tend to think of fat as being high calorie but portion size has much to do with it. A smaller portion of a fat-rich meal can be lower calorie than a larger portion of a carbohydrate rich meal particularly if the carbohydrate rich meal is bigger to get the same level of satisfaction.

What I've wanted to understand is how those tiny *kitten* chinese or japanese girls just plow through food and stay tiny.

I mean plow through food. I was at an L&L last time I was in hawaii. Three little japanese girls at a table. Each one had a large loco moco, plus there were two orders of spam musubi on the table, two open bags of beard papa they were eating from, and an additional pair of large meal boxes with mac salad and spare ribs.

They ate all of it and ordered more mac salad.

I couldn't finish my medium loco moco. wtf?

I know a lot of people like that. Many of them eat just that one meal. Some of them head to the bathroom and purge afterward. Both are quite common.

u shouldnt be checking out ur sister bro

Last Sunday I ate waffle for breakfast, KFC crispy chicken and sweet corn for lunch, and Hardee's Jim Beam quarter pounder burger for dinner. I also drank one large McDonald's ice coffee. I weighed myself this morning, and I didn't gain anything. I actually lost a little weight.

To others it may seem that I eat all junk and not gain weight. Well, I counted the calories of every single thing, and I'm still netting under my daily goal, especially since I spent an hour riding a bicycle and most of the day walking around.

Also, I used sugar free syrup and no butter on my waffle, only two pieces of fried chicken with a cup of sweet corn, and the burger by itself with no fries & no soda.

Just count your calories, it works.
http://www.cnn.com/2010/HEALTH/11/08/twinkie.diet.professor/index.html

I think most people are talking nutrients (micro and macro) when they speak of "junk", not calories.

I mean plow through food. I was at an L&L last time I was in hawaii. Three little japanese girls at a table. Each one had a large loco moco, plus there were two orders of spam musubi on the table, two open bags of beard papa they were eating from, and an additional pair of large meal boxes with mac salad and spare ribs.

While I don't know what much of that is, I think we all know someone who eats a family size bag of chips and drinks a 2L of sugary soda, and stays skinny... most of those people that I know, when I thought about it, that was pretty much all they'd eat that day, and then over the next days, aware of it or not, they'd make up for any of the excess. As much as I might call it a sickness, it sounds like awareness of what your body needs to survive.

Wishful thinking. There really are naturally skinny people out there, why try to blame it on something?

* maybe it's because we've never dieted for weight loss?

Ohhh... I watch my macros and micros and just eat whatever's needed to meet and exceed those numbers. I really don't care about calories.

If your only goal is to lose weight, the CNN article proves that macros don't matter, calories do. If your goal is to create a certain kind of lean look, then macros become more important.

food doesnt make you fat, TOO MUCH food makes you fat....

^^this