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　　Diane and her dad, Pete, are at a bakery, choosing some bread for lunch:

　　P:Ah! That's what I want—nice, crusty1 white loaf.

　　D:But Dad, a man of your age should be eating healthier bread.

　　P: Hey, I'm not that old! Anyway, I don't believe all that stuff and nonsense about white bread versus brown, brown rice versus white, and what have you.

　　D:Dad, I'm not a med student for nothing! There was a Harvard report published in a nutrition journal all about this. I think you should hear me out.

　　P:OK, OK. But no lectures. I know I'm overweight with high blood pressure, and I don't see how eating whole-grain bread is gonna make much difference.

　　D:Well, it does. Research has shown that a diet high in whole grains helps in staving off2 diabetes in older men, even obese ones.

　　P:Hey, lay off on the "obese" bit; I'm cuddly,3 OK. So, white bread increases the risk—is that what you're saying?

　　D:Actually, no. Eating white bread and rice doesn't increase the natural chance of developing diabetes per se,4 but eating whole grains instead will reduce it.

　　P:So I'm right! This white bread won't do me any harm!

　　D:Yes, but it won't do you any good, either.