Obesity and Diabetes among Children and Adults in the US a Literature Review

A predominant theme in research and practice today is obesity, which is increasing at an alarming rate worldwide in all ages. As a future nurse practitioner:
How would you approach or discuss the topic of obesity and diet with your adult or geriatric patients?
What are the possible health consequences of obesity and what factors need to be taken into consideration when treating the obese patient who also has multiple comorbidities (e.g., hypertension, diabetes, high cholesterol)?