First off, for weight loss all that matters is calories, but for fat loss the kind of calories matter.

When it comes to fat loss, the problem with fruit is not their glucose content, but their fructose content, which has a low threshold of consumption before it is turned into triglycerides and stored as adipose tissue. Some fruits have a high fructose/glucose ratio and others have a low fructose/glucose ratio. So, when going for fat loss (and better digestion if you are like most Europeans), ideally you want to choose fruits with a low fructose/glucose ratio.

Fruits with a lower fructose/glucose ratio include blueberries, plums, peaches, figs, and apricot. All these have ratios of < 1. Bananas, oranges, and grapes all have a ratio of 1.0, and the reason they are generally well tolerated by most (blood sugar and latex allergy issues aside) is because they have enough glucose to counteract the fructose load. Non-preferable fruits for fat loss (i.e. one's with higher fructose/glucose ratios of > 1) include apples and pears (at a whopping 2.0 and 2.1 respectively), watermelon (above a 2.0 if I recall correctly) and nightshades (although the serving size of these is usually so small that the fructose effect is barely noticeable). I cannot recall exactly, but I think oranges have a 1.0 ratio, which makes them fine in my book.

So, here is where the misconception is. Most people think that pears and apples are good for weight loss because of the low calorie density. However, iso-calorically (i.e. 100 calories of apples or pears vs. 100 calories of banana or fig), figs and bananas are better for fat loss than apples and pears.

Here's an summary. For fat loss, look at the fructose/glucose ratio, and choose fruits with a 1.0 or less. These include but are not limited to most berries, oranges, figs, plums, peaches, apricots. Intermediate fruits with a 1.0 ratio are banana, grapes, and oranges. When NOT trying to lose fat or maintain a certain level of leanness, fruits with a >1.0 fructose/glucose ratio are apples, pears, watermelon, and pineapple (there are more, but those are the most common ones).

Hope that clarifies some things and helps you reach your goal(s).

Truthfully, 25g of carbs of oatmeal or potatoes is better for fat loss than the 25 grams of carbs in a medium apple.

The only fruits I'd stay away from are bananas, figs, and dates, since they're rather high in sugar. But even they are fine on occasion. In general, use paleo as an opportunity to try out some new fruits you've never tried before. You may hate them (and therefore eat less of them), but you may find a new one you love and you can work it into your food rotation. Increasing your fruit options will help you from being bored by a 1-apple-a-day limit. If you're just looking for a sweet snack, I find coconut to fit the bill perfectly. Berries work best for most people.

depends on the fruit. I love apples, but they are basically bags of sugar. Whereas Bananas, strawberries, and the like provide nutrients that we need, and thus their consumption provides our diets with added value.

"too much" will always be arbitrary. it is very easy to adjust your diet for ideal results, but I'd say only eat one fruit of your choice every day until you reached your weight loss goal, and then make adjustments that maintain the weight loss. I can't see how one fruit a day would screw anything up.

but if you have a burning desire to eat a bunch of sugary fruit every day, that likely means all the other food you eat isn't satisfying, as sugar IMO isn't a terribly strong craving.

I usually eat 3 pieces of fruit a day. I haven't seen any impact, but I keep my overall carb & calorie intake pretty stable.

I have been eating a lot more fruits over the past few months. I'm staring to get more fungus on my toe nails, and more gas. This leads me to believe I may be messing up gut flora. Perhaps the type of fruits are important. Probably too much bananas and fruit juices. Haven't gained weight though.

I'm pretty new as well to paleo and lost a ton of weight in the past with a lower carb diet but, I always had raspberries just because I liked them. However my. Activity level was way too high for the aggressive calorie restriction I had going and along with that fat I lost a decent amount of muscle. So now I bulked up about 20lbs over my goal with pretty clean foods and now gonna cut fruit except for post workout meal on the 2 days I do heavy weight training. I'm hoping that does the trick along with a decent amount of low impact(Dog Walking) cardio lol. New to this site and love it! Tons of great info&people.