I have a board of them on Pinterest. I am amazed myself and I do not promote any particular one of them as I believe we all need to make our own lifestyle decisions ( however there are some I do not recommend at all to anyone). So THE KEY is Lifestyle. If one is looking to lose weight it will take more then a fad diet to accomplish it. Food isn't the only thing that changes. We also need exercise as apart of our healthy lifestyle. I know you know that. It's just a matter of doing it. Once we start making changes things start to roll quite nicely. Keeping up with it is what really matters. Yes it's lifestyle so only 2 weeks isn't going to cut it.
Pop has nothing to offer but simple carbs, refined "SUGAR". 10 Teaspoons approx. and the total calories are about 150 per 12 oz can. Crash and burn food, I call it.
Milk offers high amounts of protein, calcium, Vit D & Vit A. per one cup and is about 110 calories for the 1%.
Do set out your own goals. You may chose to get this help with the guidance of a health coach or nutritionist, doctor or naturalpath.
Don't follow fad diets and quick fixes. It's a trap.
I am attaching the Canadian food guide website for you to use as reference as it gives you a lot of answers to many questions.
May you be Nutritionally Well.