I definitely believe that we are seasonal creatures and that changes in our environment and available diet stimulate many natural hormonal/epigenetic/etc changes in us that we don't yet fully understand.

That said, I consider it a pretty safe bet until the science is in to eat and live with a consideration of the season.

I try to eat seasonally, including more lower glycemic fruit in the summer (berries, etc) and higher fat and protein in the winter with no fruit. Basically I try to eat and live in a somewhat approximation of what I believe would have been available to my ancestors.

I seem to naturally be a bit less drawn to protein and fat in the summer (I cant finish as many slices of bacon!), so I would say this is both natural inclination and a matter of conscious choice. As long as I don't go overboard on super sweet fruit this seems to be working just fine with no digestive issues and increased energy (I've noted some increased hunger as well due to more carbs, but nothing unmanageable)

i loooove fruit, and would be a frutarian year round if i wasnt such a fruit-snob. i tend to gorge on it in summer because its close, cheap and delicious. i dont know if theres anything worse than an expensive, store-bought, strawberry from mexico in the middle of february. its not worth it for me. because of the nature of summertime, i tend to play fast and loose with the carbs- ice cream, toasted marshmallows, wine, fruit. its all part of summer for me and i guess the scale reflects that a bit, but im also a lot more active in summer so at the end of the day its six of one and a half dozen of another. new england summers are short, and i indulge in them.

winter is meant for all-day braising of rich fatty meat, and tangines, which are just as good as summertime fruit, IMHO. part of eating traditionally is cooking, storing, preserving and preparing traditionally, no?

Fruit looks and smells absolutely divine right now (my first summer eating paleo) and I practically drool when I run across just about any fruit. Because of this, I have definitely eaten more fruit than I usually do. This has been more of a "just happens" type thing. I don't plan on buying any fruit, but I'll come home with tons of it. And then eat it...all of it. Yum!

I have noticed some unfortunate side effects, so I am making an effort to minimize/eliminate most fruit.

I've been getting headaches that feel a lot like sugar headaches (I get these after eating any type of pastry or drinking a sugar-laden coffee), but fruit is the only major source of "sugar" I've been ingesting. I've also had some, ahem, digestive issues. I haven't noticed any changes in energy or performance.

I do this, but not to extremes, and not on purpose. It just happens, based on availability. I tend to eat more fruit in the late summer, and then switch to squash and tubers when they are ready.

I totally eat more friut in the summer, I think we were meant to, thats why its there. Its not really a choice that I make, I just try to eat as much real food as possible. I dont really count fruit in December from South America as real food, therefore I tend to limit my intake in the colder months. Right now, however, with all the locally grown goodness overflowing, its hard to resist. Besides, I'm sure if it were a million years ago and apples and berries started popping up, it would be a welcome snack on my daily hunt.

I eat a bit more fruit in the summer, not that much -- I eat fruit virtually every day but a reasonably modest amount. But I just wanted to mention that during the winter frozen fruit is a good option (I eat berries year round, love having frozen mixed berries in the freezer at all times). I assume they freeze 'em when they're abundant and in season, and it seems a lot ecologically saner than importing them in February from Mexico or wherever.

Can't say I'm much of a seasonal eater - but those summertime "cuties" are my favorites and well, I just can't pass them up-it's real food, it's not manufactured, mother nature put it there and well, I just make sure to keep the amount within reason and try not to binge as I've been known to do when I was under the spell of the SAD!

I do not trend toward any particular macro nutrient seasonally. I tend to eat more in the winter months, even though I am less active and eat less in the summer months even though I am way more active. I do eat fruit but it's not a significant part of my diet, I eat it when I feel like it.

I am huge into trying to eat local and seasonal. For anyone in the southeastern US(I am in Mississippi) here is the forecast for seasonal eating. I try and follow it somewhat...

January: Carrots, Chard, Collard greens, Fennel, Green onions/scallions, Kale, Parsnips, Turnips,

February: Carrots, Chard, Collard greens, Fava beans, Fennel, Green onions/scallions, Kale, Parsnips, Turnips,

March: Asparagus, Carrots, Cauliflower, Chard, Collard greens, Fava beans, Fennel, Green onions/scallions, Kale, Lettuce, Parsnips, Radishes, Spinach, Strawberries, Turnips,

April: Asparagus, Beets, Cabbage, Carrots, Cauliflower, Chard, Collard greens, Fava beans, Green onions/scallions, Kale, Leeks, Lettuce, Onions, Radishes, Spinach, Strawberries, Turnips, Zucchini

May: Asparagus, Basil, Beets, Blueberries, Broccoli, Cabbage, Carrots, Cauliflower, Chard, Collard greens, Cucumbers, Fava beans, Green onions/scallions, Kale, Leeks, Lettuce, Onions, Peaches, Potatoes, Radishes, Spinach, Strawberries, Zucchini

June: Asparagus, Basil, Beets, Blackberrries, Blueberries, Broccoli, Cabbage, Cantaloupes, Carrots, Cauliflower, Chard, Chiles, Collard greens, Cucumbers, Garlic, Green onions/scallions, Leeks, Lettuce, Melons, Okra, Onions, Peaches, Peppers (sweet), Potatoes, Radishes, Raspberries, Spinach, Strawberries, Tomatoes, Zucchini

July: Basil, Beets, Blackberrries, Blueberries, Broccoli, Cabbage, Cantaloupes, Carrots, Chiles, Cucumbers, Leeks, Lettuce, Melons, Okra, Onions, Peaches, Peppers (sweet), Potatoes, Raspberries, Spinach, Strawberries, Tomatoes, Zucchini

August: Basil, Blackberrries, Blueberries, Broccoli, Cantaloupes, Carrots, Chiles, Cucumbers, Leeks, Melons, Okra, Onions, Peaches, Peppers (sweet), Potatoes, Tomatoes, Zucchini

September: Basil, Blackberrries, Cantaloupes, Carrots, Chiles, Cucumbers, Melons, Okra, Onions, Peaches, Peppers (sweet), Pumpkins, Rutabagas, Tomatoes, Zucchini

October: Basil, Carrots, Chard, Chiles, Collard greens, Cucumbers, Fennel, Kale, Okra, Onions, Peppers (sweet), Pumpkins, Rutabagas, Tomatoes,

November: Carrots, Chard, Collard greens, Cucumbers, Fennel, Kale, Onions, Parsnips, Pumpkins, Rutabagas,

December: Carrots, Chard, Collard greens, Fennel, Kale, Parsnips, Rutabagas, Turnips,

EARLY JUNE SNAP PEAS LATE JUNE OKRA, ONIONS, PEARS, PEAS, POTATOES, SNAP PEAS, SQUASH, TOMATOES

EARLY JULY APPLES, BEETS, BLACKBERRIES, BLUEBERRIES, CANTALOUPES, CORN, CUCUMBERS, EGGPLANT, GRAPES, NECTARINES, OKRA, ONIONS,PEACHES, PEARS, PEAS, POTATOES, SNAP PEAS, SQUASH, TOMATOES, TURNIPS, WATERMELON LATE JULY APPLES, BEETS, BLACKBERRIES, BLUEBERRIES, CANTALOUPES, CORN, CUCUMBERS, EGGPLANT, GRAPES, NECTARINES, OKRA, ONIONS,PEACHES, PEARS, PEAS, POTATOES, SNAP PEAS, SQUASH, TOMATOES, TURNIPS, WATERMELON

EARLY AUGUST APPLES, BEETS, BLACKBERRIES, BLUEBERRIES, CANTALOUPES, CORN, CUCUMBERS, EGGPLANT, GRAPES, NECTARINES, OKRA, ONIONS,PEACHES, PEARS, PEAS, POTATOES, SNAP PEAS, SQUASH, TOMATOES, TURNIPS, WATERMELON LATE AUGUST APPLES, BEETS, BLACKBERRIES, BLUEBERRIES, CANTALOUPES, CORN, CUCUMBERS, EGGPLANT, GRAPES, NECTARINES, OKRA, ONIONS,PEACHES, PEARS, PEAS, POTATOES, SNAP PEAS, SQUASH, TOMATOES, TURNIPS, WATERMELON

EARLY SEPTEMBER APPLES, BEETS, BLACKBERRIES, BLUEBERRIES, CANTALOUPES, CORN, CUCUMBERS, EGGPLANT, GRAPEFRUIT, GRAPES, NECTARINES, OKRA,ONIONS, PEACHES, PEARS, PEAS, POTATOES, SNAP PEAS, SQUASH, TOMATOES, TURNIPS, WATERMELON LATE SEPTEMBER APPLES, BEETS, BLACKBERRIES, BLUEBERRIES, BROCCOLI, CABBAGE, CANTALOUPES, CARROTS, CAULIFLOWER, CORN, CUCUMBERS, EGGPLANT,GRAPEFRUIT, GRAPES, NECTARINES, OKRA, ONIONS, ORANGES, PEACHES, PEARS, PEAS, POTATOES, PUMPKINS, RADISHES, RUTABAGA,SNAP PEAS, SPINACH, SQUASH, SWEET POTATOES, TOMATOES, TURNIPS, WATERMELON

EARLY OCTOBER APPLES, BROCCOLI, CABBAGE, CARROTS, CAULIFLOWER, GRAPEFRUIT, OKRA, ONIONS, ORANGES, PEARS, PEAS, POTATOES, PUMPKINS,RADISHES, RUTABAGA, SNAP PEAS, SPINACH, SQUASH, SWEET POTATOES, TOMATOES LATE OCTOBER APPLES, BROCCOLI, CABBAGE, CARROTS, CAULIFLOWER, GRAPEFRUIT, OKRA, ONIONS, ORANGES, PEARS, PEAS, POTATOES, PUMPKINS,RADISHES, RUTABAGA, SNAP PEAS, SPINACH, SQUASH, SWEET POTATOES, TOMATOES

EARLY NOVEMBER BROCCOLI, CABBAGE, CARROTS, CAULIFLOWER, GRAPEFRUIT, OKRA, ONIONS, ORANGES, PEARS, PEAS, POTATOES, PUMPKINS, RADISHES,RUTABAGA, SNAP PEAS, SPINACH, SQUASH, SWEET POTATOES, TOMATOES LATE NOVEMBER BROCCOLI, CABBAGE, CARROTS, CAULIFLOWER, CHRISTMAS TREES, GRAPEFRUIT, OKRA, ONIONS, ORANGES, PEARS, PEAS, POTATOES,PUMPKINS, RADISHES, RUTABAGA, SNAP PEAS, SPINACH, SQUASH, TOMATOES, WREATHES

EARLY DECEMBER BROCCOLI, CABBAGE, CARROTS, CAULIFLOWER, CHRISTMAS TREES, GRAPEFRUIT, OKRA, ONIONS, ORANGES, PEARS, PEAS, POTATOES,PUMPKINS, RADISHES, RUTABAGA, SNAP PEAS, SPINACH, SQUASH, TOMATOES, WREATHES LATE DECEMBER SNAP PEAS

I also think it makes sense to eat fruit when its available fresh in the summer. I eat about 2 or 3 per day in summer and 1 a day in winter.