Okay, so I know there are many studies showing fructose to be bad for animals and humans, but are there any studies showing fruit to be detrimental to humans in any way shape or form?
I enjoy eating fruit daily but should I be concerned?
asked byforeveryoung (14952)
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on April 24, 2012
at 11:50 PM
Fruit does not equal fructose and if you are significantly overweight I sincerely doubt a reasonable amount of fruit will cause a stall or weight gain.
For myself I've been both VLC (sub 50gm everyday and 20gm average) and eaten primarily fruit and yams + meat (70% carb) and my weight loss remains consistant. Slightly higher VLC but not hugely. I average 1 lb per week on VLC and 3lbs per month on high carb.
Also the claim that fructose from fruit isn't burned as fuel is wrong. No other word for it. Fructose becomes liver glycogen and is burned off when just sitting on Paleohacks.
We should also consider what excessive is in the context of fruit. I love me some strawberries. So I'm going eat some, say 12 cups of halved strawberries, after all I'm trying to lose weight!!
547 calories...not bad. 86g of carbohydrate 43 of which is fructose
Still under Lustig's 50g of fructose a day to avoid liver issues. Who here can afford 12 cups of berries a day? Who here could actually eat that without being overfull the rest of the day? Whole fruit is just not something you are going to over eat.
on April 25, 2012
at 12:01 AM
I've had to crochet myself some belts in the past week because the pants that were too tight to sit down in a year ago now fall right off my hips. Other than the 1st month of transition from SAD, I've eaten fruit daily while losing that weight. Some days I just peel and eat a grapefruit; other days I'm right around that "50g of fructose" level.
If fruit isn't healthy, why has my gut healed and why don't I have any of the digestive issues discussed on so many PH questions? Why is my blood panel great?
I don't thrive in the absence of any of the following--meat, vegetables/greens and fruits. I simply cannot go more than a day or 2 without eating some of each. Within 3 days of failing to balance my intake I suffer acute symptoms--energy loss, anxiety, excessive hunger, etc.
We evolved eating all availble animal and plant-based foods and plant-based foods and vegetables/fruits are the "gather" in hunter/gatherer. Why would we eat just a few of our natural foods? All the books, journals and documentaries I ever saw about traditional hunter/gatherers emphasized that the resourceful cultures gleaned every scrap of nutrients from their environments.
on April 24, 2012
at 11:29 PM
There's no dietary requirement for fructose and we do not use it as fuel. *EDIT: It is not used directly or preferentially as fuel and it can be converted to glucose.
Fructose can react with proteins (via the maillard reaction) to form advanced glycation end products (AGEs), which cause damage to your body that leads to disease.
To prevent the formation of AGEs, fructose must either be burned immediately or stored as fat. In the liver, metabolism of fructose favors lipogenesis (I don't think the mechanism is really well known here).
The problem with fructose is when you have an excess of fructose, which Kurt G Harris categorizes as one of the Neolithic agents of disease (NADs). And with that, reasonable quantities of fruit per day are okay.
I eat strawberries often and since it's almost summer, I'm not gonna say no to mangoes. But I dunno, maybe supplement with magnesium on days you eat a lot of fruit?