Try keywords such as:
Benefits, advantages, or positive
Risks, disadvantages, or negative
Impact, effect, or influence
Don't necessarily use the name of the product or program (e.g., AdvoCare, South Beach diet, etc.)
Think about what these products or programs do, and use those keywords instead
Do they encourage eating certain types of food or activities?
Do they discourage certain types of food or activities?
Why do they encourage or discourage?
What are the advantages or disadvantages of eating certain foods or participating in certain activities?