No matter what i do i cannot lose weight, all my labs are fine, no thyroid problems or nothing, i do exercise with a personal trainer, tried dash diet, fasting, low carb, everything! my calorie intake is not more than 1300. why i cannot lose weight?

When someday someone figures out the answer to this question, she probably will get the Nobel Prize. Obesity and weight control are among the biggest and most daunting medical uncertainties. Increasing your physical activity (calories burned) may help, i.e. increased exercise. Speak with experienced doctors about specific diets. But don't feel guilty if it doesn't work. It's not your fault!