Losing weight is often a simple matter of mathematics. For example, let us say you are normal, if that is the case then you probably burn 2,000 calories a day in order to maintain a healthy weight. If you eat more than those 2,000 calories you'll be whatever weight matches that number of calories.
IF you want to lose weight, eat fewer calories than you do now. You can exercise to make up for a tiny amount of calories that you consume, but in general it's not the easiest way to lose weight.
Once upon a time I read weight watchers, the system that they use, that works, is to give each food a point rating, and in a day you get a certain number of points to use, and when they're up, you stop eating. This is easier for a lot of people than keeping track of their calories.
Now, when we think of our daily limit around 2,000; let us look at the misc double cheeseburger:
This thing is easily 1/3 of the amount of calories in a day that you should be eating if you want to stay under 2,000 calories. So if you JUST eat this burger, you have may be okay, but if you also get a soda (probably 200 calories depending on the size) then you're much closer to half the amount of calories that you need for your entire day. (This isn't taking into account the sodium that your body needs, or how many vegetables and fruits might be good for you) If you get Medium French fries too, then it is another 300 calories. Now to apply basic math we have 740 + 200 + 300 = 1240 calories from just one meal!
That's okay though, that was probably just lunch, and we'll just imagine you skipped breakfast entirely (terrible for your metabolism, but it helps with the amount of calories you don't want to consume)
So now… you'll have a sensible dinner, probably something that has only 760 calories… so what's for dinner?
Dinner = Pizza!!!
Everyone loves Pizza, and who can blame them, it's super tasty!, and it's only 270 calories a slice from a small pizza! We already did the math, you can easily have two slices and stay within your 2,000 calories for a healthy weight. 270 x 2 = 540, as long and that gives you a whole extra 270 calories left in case you want to have another soda.
My two cents
This may work for some of you, but I've tried eating like this and I spend most of my time feeling like I'm starving to death. Because of the additives in food, they are chemically designed to MAKE you feel hungry within up to half an hour of eating them. (Look at the double cheese burger, it's absolutely enough food to have you feel full for hours! But you know that you're hungry within an hour of eating it) Even if not for the chemicals making you feel artificially hungry, eating like this is a pain. I know people who can eat just two slices of pizza, there aren't many of them though. The last time I had pizza I tasted the salt in it, and it was really gross.
This entire thing is 500 calories 
I have something like this for breakfast 500 calories… something like this for lunch, another 500 calories, and another for dinner, than one more right before bed. The MOST important thing about eating like this is that you REALLY want to get to around 2,000 calories minimum, but if you go over, there's zero chance of you getting fat from the fruits and vegetables when they are raw. They come with the fiber they need to flush them through the system automatically built in. What's MOST important though is that my body is getting the nutrition it needs. I used to eat like you see above, the only vegetables in my diet were the ones that had been squished and turned into some form of salty tomato paste. I NEEDED a multivitamin to survive.
Here are the major benefits from eating raw vegetables, fruits, and nuts.
- You get the nutrition you need (no multivitamin)
- You are always full!
- Supreme amounts of energy
- No processed garbage inside of you
- Extremely low sodium! (Great for your heart)
- Your metabolism increases because you are always full
- You WILL be a healthy weight
- You feel healthy!
I'm sure everyone is tired of me talking about this raw fruit and vegetable diet of mine, but I think that if you do something that changes your life so powerfully, it's then kind of your duty to annoy the rest of the world with how good you feel. Ask Richard Simons.
Now to complain about the metabolism increase… it turns out that once your metabolism is at peak performance, you grow fingernails and hair longer in a shorter period of time. Since I've been eating like this I've had to start clipping my nails once a week, before it was perhaps twice a month or once every three weeks. That's kind of inconvenient, but what's even worse is that I'm having to go get a haircut every two weeks if I want to keep my hair looking professional. I don't, so I get it cut once a month, and even that right now is barely enough! Not to mention the other unspoken of effects of having a raging metabolism. If you could bottle up the effects of it and sell it as a super pill you'd make enough money to control the world. (of course I'm talking about not getting sick… what did you think I might have been referring to?! :-p )
In other news… I'm totally going to get a juicer, I'm extremely excited to tell you the results of that experiment. What I expect I'll do is juice a ton of fruits and veggies the night before and drink them at work the following day for lunch. Taking my lunch break from a possible 1 hour break to a 30 minute break. I can't wait to share that experience!
(This is the one I'm going to get, it even juices wheat grass! Not quickly from what I understand, but I'll sacrifice speed for quality.)