The old saw in nutritional circles was that "a calorie is a calorie" and if you wanted to lose weight or just be healthy, "don't eat so damn much" according to a very famous doctor of the era.

We now know this to be false information.  All calories are not the same.  It's calories from sugar that are the issue, not so much total calories.  Of course, if you eat more than your body expends in energy out-put, day after day, it will lead to weight gain. But the weight you gain and where and how it is deposited is the issue.

Eating calories from sugar causes insulin to be secreted at higher rates than normal.  When this happens day after day, it will eventually lead to insulin "insensitivity" meaning, the pancreas does secrete insulin but the body's cells have stiffened (from the end-products of sugar metabolism)  and are no longer able to sense the presence of insulin.  Result? The blood sugar goes up and stays there.  (until it crashes, which is a whole other issue, starting the craving for more sugar all over again.

This is the beginning of the end.  Meaning end of life due to:

chronic high blood sugar = chronic inflammation = chronic disease.

Most chronic disease, we now realize, starts with years and years of insulin insensitivity (which we do not feel in our bodies).  The only way you know, before a chronic illness (diabetes, cancer, heart disease) emerges is by a blood test that includes insulin and HA1c levels.  Which aren't normally requested by your doctor because there is no sign of disease manifesting itself.  Kind of a "catch 22" medical model. 

Check your intake of sugar and refined foods.  If your diet isn't primarily fresh vegetables, some fruit of the low-sugar kind, like berries, and wild caught fish, grass fed animals and animal products, and lots of healthy fats like olive and avocado oil, nuts and seeds, avocados, and eggs, then you might need to think about making some changes

Get those blood tests for a "base-line" before you make your changes, and re-check those values after about 3 months.  (That's how long it takes to change the HA1c levels)

Best of health to you, and last article will address the issue of why we crave sugar.