Does what you eat matter?

In losing weight and looking better, could I still eat the same calories that I am eating now (1590) with Mcdonald's and still get the same results as eating extremely healthy?

Sometimes I wonder whether this is my problem or not. I drink a lot of water, I eat over my calorie goal but that's because I don't log my exercise minutes and I workout 5-6 days a week for 2 hours or more. Granted, I have a lot of muscle to begin with because I am an athlete and I only have about 20 pounds to lose. I am currently 5'6'' and 150 pounds and my goal is 135.

My problem is that I eat a lot of sugar. Sugar is basically an addiction for me, I have to have something sugary at least once or twice or thrice a day but is it ok to eat a lot sugary things as long as it's under your calorie limit?

I think my diary is open to the public so if anybody would like to look at it and give me some suggestions, please do.

What you eat definitely matters. Even if you're under your calorie goal, eating high amounts of omega 6 fats and no omega 3s is going to cause inflammation in your body and contribute to heart disease. Refined carbohydrates and trans fats also contribute to heart disease and are nutritionally deficient. How can you expect your body to lose the same amount of weight on a nutrionally deficient, pro-inflammatory diet as you would on a nutrionally dense whole foods diet? How will your body be able to work efficiently and burn off fat if it has to spend so much time clearing toxins from your body? And what if you become constipated? Sugar is far more than just empty calories - it wreaks havoc with the body and causes internal fat called visceral fat. Sugar addiction is common and I have problems with sugar too, I had to cut it out completely and now I don't crave it anymore.

I'm sorry if this is not what you want to hear but it is the truth that many people don't want to face. As much as people want to believe it's all just about calories, not all calories are created equal and if your body is malnourished and wracked with toxins it can't efficiently burn fat.

For most reasonable diets, yeah, it's all about the calories.

If you're working out on a regular schedule, such that you can figure out an average activity level per week, I'd recommend calculating your TDEE at something like http://iifym.com/tdee-calculator (and use the "enter activity level" portion so you can get pretty accurate). Then calculate your goal calories from that so you're not just handwaving away the going-over calories. Heck, if you're really working out hard, you might be undereating and that's causing the weight stall.

BTW, have you had a trainer calculate your BMI or body fat %? Even by normal measures you're under 25 BMI, and the standard BMI calculations tend to be pretty worthless for athletes. It's possible that for your build, musculature, and training regimen, losing weight is unrealistic.

I definitely have body fat that I do need to cut off, but I know that there's also a lot of muscle in my body. I'm kind of worried that I might be losing just as much muscle as fat as well. My BMI is slightly under overweight, and my TDEE is around 2100 calories and it says I should be eating around 1700 for fat loss. Maybe I shouldn't be going over my calorie limits.

If your goal is weight loss alone you're missing the point. You can become anorexic eating a burger a day and working out for 2 hours, but that isn't what ANYONE trying to achieve weight loss should be focusing on. And if you stress your body out by giving it junk and not enough fuel you then get a hormone called cortisol that steps in and guess what it does? Signals the body to store fat!