Losing Weight

What is the main part of losing weight? Discuss and provide the answer, according to the research on this topic. I need 550-600 words max. In APA formatting style (please make sure you?re using the newest version!) with 2 references in APA. It needs to have a standard essay structure: introduction, thesis statement, body paragraphs, and conclusion. No abstract needed. As for the thesis statement, you have to explain why this is the argument you want to make or what you want your reader to understand as a result of reading the essay. Then the list of references on a separate page. Here?s a link to the formatting website: https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/general_format.htm