CHALLENGE: diet, weight, energy, exercise, and disease

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Challenges are a special type of post. The goal of a challenge is to crowdsource improvements to a proposed mechanism, Your input is critical because you might have the best opinion.   

The below diagram shows that diet influences weight, influences your energy, influences your exercise, influences your disease risk. Exercise also feedback influences your diet. 

What is missing? Is that arrow pointing the wrong direction?

Provide your input through a tweet reply below. 

Diet2Disease.JPG