People need to stop eating processed sugar. Losing and keeping off weight is easy. As soon as I stopped eating, candy, baked shit from coffee shops and crap, fast food, and stopped drinking pop, it became hard to gain weight. That shit's poison. It gives your body nothing. Cutting out nearly all processed sugary food is the easiest way to lose weight with basically no effort. I didn't change my lifestyle, I don't count calories or exercise to any regime. I sat for hours a day at my last job. I just stopped eating garbage and eating food that's actually food. I'm 5'8", I'd been over 200lbs for years and years. I can't get above 150lbs now and all I do is not eat sugar or processed crap. I eat tons of cheese and meat, I have at least one kind of grain and vegetable with each meal.
If the main ingredients of something are chemicals and sugar. It's not food. Don't eat it. Your body will be healthy, you'll lose weight. It's a pretty simple concept. These things give your body nothing. Your body needs certain things to make new cells and perform biological functions, eat those things and you'll be healthy. Eat garbage and poison and you won't be.
Eta: Sorry for the tone of my post. I've sat and watched a good friend of mine slipping in and out of a diabetic coma in a hospital brought on directly by the food he eats and to this day he still refuses to change his diet in anyway and I'm honestly worried it's going to kill him. This topic makes me a little more unreasonable than usual.