There's one definite way to lose fat: eat fewer carbs and exercise. Unless it's eat high-carb and move moderately. But definitely avoid saturated fats ... unless you should pursue them? Or something. It's all very confusing. Also: trans fats. You should definitely know the term "trans fats."
Some people struggle with weight no matter how well they eat and exercise. They may find (short term?) success with high-protein, low-carb diets. Such plans either focus on meat (Atkins, Inuit, T. rex) or emphasize greens (Paleo, Ketosis, Soylent Green).
Intermittent fasting combined with hearty eating also produces good results. Wait, seriously? OK, our bodies are plainly screwing with us. Owning a human body is like dating a passive-aggressive control freak.
Leonardo da Vinci via Wikipedia
Just tell us what you want, Darren!
Along these guideposts, the path to weight loss is pretty well marked. The only reasons diet books are still being printed and promoted are:
1. People are stupid and lazy
2. Book publishers like easy money
3. News agencies like easy content
There are innumerable weight loss systems out there, most equating "weight loss" with "caloric deficiency" and "system" with "crap a person in Los Angeles made up." They're all basically the same diet, but one might starve you on a diet of carrots, while the next starves you on a diet of cabbage. And a third lets you have both, but you can only eat them while enduring tapes from the Jonestown massacre.
I'm not saying you won't lose weight on most of these regimens, since they all advocate exercise and most include better eating habits. I'm just saying you could eat nuts and fresh greens at 1/8 the cost of paying some hippie in a lab coat for placebos and bad advice. Let's examine these stupid but real diets and then propose our own meal plans that are more insane, and therefore more effective.