After reading your quote from Dr. Lustig, I was reminded of a previous high fruit diet that I was on (which I do not recommend), where I would eat fruit beyond my satiety in order to get enough calories. Unfortunately some of my friends are still on such a diet, and the quote you posted from Dr. Lustig seems to indicate that eating fruit beyond satiety makes heavy demands on the liver, for which further health problems may arise. I would like to know if I am interpreting that correctly (in your opinion), as I am looking for further evidence to present to my friends to help lead them towards a healthy diet like this one, which includes lots of fresh fruits, vegetables, and starches.
Thank you for taking time to respond Jeff, I read all of your posts with the anticipation of furthering my understanding of healthy eating!
I do not see where Dr Lustig is making that comment so I would disagree with your interpretation.
So, lets review..
1) I do not recommending arguing the merits of one diet over another with friends, nor do I choose to participate in such discussions. If you have someone who is truly interested, send them here so we can interact directly.
2) My earlier comment about the mango's applies here also. We are not recommending anyone consume that many fruits or to get that many calories of their day from fruit.
3) I am not recommending anyone to consume food beyond satiety to get enough calories, so my first recommendation would be not to do it. If someone has to do it, then there is something wrong with their diet or the amount of energy they are expending.
4) 5 small bananas contain about 25 grams of fructose. 10 medium bananas would contain about 50. In the earlier posts, I showed that there really is no problem with fructose, even if it is straight pure fructose, until the amount gets over 50 grams and the real concern starts with levels over 100 grams.
So, again, while I would not recommend anyone do what you are asking, it is unlikely that their would be an issue to the fructose content.