A couple of people have mentioned the book, "Lights Out", which I read years ago. I thought it was a solid book that made many good points. In addition, I would point out the book, "Diet Evolution", which makes similar points.
On of the core ideas in both books is that fruit is a signal to the body to store fat. I disagree with this. First, it should be noted that fruit is anti-inflammatory. In particular, citrus fruit seems to have a lot of anti-inflammatory effects (and berries, too).
So does fruit really signal the body to store fat? No, in fact I think it's the reverse. This new study shows that a higher fruit intake led to more subsequent weight loss. And there are other similar studies like this one.
If anything, I would say it's the absence of fruit which could lead to weight gain. No available fruit would be a signal to the body that summer is over, and that it's time to store fat for the winter.
