Nowadays, people is focusing on how to lose weight quickly, without thinking about what are the underlying causes that may have cause someone to gain weight quickly or lose weight slowly (weight loss resistance). Losing weight is not easy, and have to be done in the right way. Functional medicine is based on cutting-edge research and emphasizes the importance of diagnostic testing to discover individual reasons for health issues like weight loss resistance. Go to your doctor to have a personalized diagnostic lab tests to investigate what is wrong (e.g.: hormone, gut, etc.) and what you need so you can precisely target the areas of dysfunction.