You Have a Friend Whose Parents Are Obese

You have a friend whose parents are obese. Since he graduated from university, he has devoted a significant amount of his efforts to doing well in his new job, leaving him with less time to exercise and prepare healthy meals. Consequently, he has gained weight. He is concerned that since he must have the FTO gene, he is doomed to be obese like his parents. What would you tell him?

A) Genetics provides only a risk for overweight and obesity, not a definite destiny. If he eats nutritious meals and begins to exercise, he should lose the weight.
B) Genetics is destiny. He might as well not worry about becoming obese since he is definitely going to be obese no matter what he does.
C) His weight gain has nothing to do with his parents. There really is no genetic relationship.
D) His parents must have eaten quite a bit of sweets and carbs before he was conceived and he now has the genes for obesity.