It all comes down to body chemistry.
Why did you deposit more fat than the average human?
To deposit a lot of fat you had to eat a lot more than your body used up as energy. Fat cells became supersaturated at some point and new cells grew. You probably have more fat cells than a lean person, so you have to face the fact that for the rest of your life you'll be more prone to maintain your current weight, because those cells want to accumulate fat. You also may have different brain chemistry, that doesn't repel food once you've eaten enough.
Some of the most frequent misconceptions is that eating fatty foods you get fat. It's not quite like that.
Actually, eating carbohydrates (complex forms of glucose, that eventually get broken down into glucose by different enzymes) increases the sugar levels in your blood, which triggers the release of insulin to take care of that glucose. Insulin acts as a trigger to get more fat into fat cells. So if you eat carbohydrates, and eat a lot of food, you will get fat.
My wife sat on a diet that is really working for her. She eliminated all carbohydrates from the diet (no fruits or vegetables, no sugar, no bread, no cereals, just some milk products with low amount of lactose, a lot of fish and meat). Now this isn't quite healthy since we need a lot of vitamins from fruits and vegetables, but when it's short-term, and with dietary supplements, it's bearable. She lost quite a lot the first few days. Point is that carbohydrates should be reduced in order to get thinner.
Anyway, you need to count the energetic value of the food you consume. An average active male needs about 2000-2500 kcal per day. Want to get thin? Reduce to about 1500 kcal per day, take on strength training. Strength training increases muscle mass, and more muscles demand more energy, so once you get into an athletic shape, you can revert to your normal diet, as long as you keep training.
Ultimately, there are no food products that make you lose weight. There are food products you can reduce or eliminate from your diet, which will help you lose weight. Some acquaintances of mine have resorted to some herbal teas that help you lose weight, but now they have serious intestinal problems because of them. Others use other kinds of poisons to damage their bodies which eventually makes them thinner. Some use parasites. Whatever. If you want to be healthy, don't use any of these "easy" methods to "instantly" lose weight. They're always crippling the body.