Florida man loses 24 pounds eating only pizza for 30 days. Sounds like a National Enquirer headline, right?
Well, according to this page, it happened: http://www.thatsfit.com/2010/07/01/the-pizza-diet-florida-man-eats-pizza-for-30-days-loses-24-pou/
I'd understand if you were a bit skeptic - don't believe everything you read on the internet! But let's not forget a university professor had similar findings when he embarked on a chips and donut diet a year or two ago.
There are almost as many theories on weight loss, healthy dieting, etc, as there are pounds that people want to lose these days. My approach has always been that of a scientist... because, well, I'm a nerd.
For me, a calorie is a calorie is a calorie. A calorie is a unit of energy, by the way, and whether the calorie comes from a donut or a salad, it's still the exact same unit. It's like that age old question: what's heavier, a ton of gold or a ton of feathers? They're both a ton!
Obviously there is more to food than just it's energy content, and we require more from our food than simply energy - we need certain vitamins, proteins, nutrients, etc. But insofar as gaining or losing weight goes, the popular opinion seems to be that it's just calories in vs. calories out. Out equaling how much your body needed to live for the day and how much extra you burned by exercise.
The problem that we all get caught up in is of course that you can only have a couple of donuts before you've had more calories than you need for the day - whereas you can eat salad (some of them anyway) for hours and not reach that amount.
So, when you see someone like this pizza guy, you have to remember that he is being very specific about how much pizza he's eating. If you look at the nutritional facts for your favourite pizza, you may be disappointed to see how few slices you would get to eat for the WHOLE DAY if you were hoping to lose weight on that diet. This guy seems to be pretty athletic, and he's a larger male, so that helps. A smaller bodied inactive female might only get to have a couple of slices!
He also changed up the toppings throughout the day to make sure he was getting the right amount of vitamins and proteins and so on.
Before you say he simply starved himself at the expense of his own health, don't forget he dropped his cholesterol, dropped 5 inches off his weight, and and shed 10% of his body fat. All things that we all probably wish we could do!
The pizza diet is not for everyone... actually it's probably not for anyone... but for me, it's a good reminder that as always you are what you eat - calories in vs. calories out. Plus toppings.