I've always wondered if the different levels in carb tolerance that we often see has anything to do with genetic differences that related to ethnicity.
I, for example, am half Italian (mother born there) and half Jewish-Russian (perhaps Belarus; immigrated many generations ago), and I am fairly sensitive to carbs: I can't lose weight without going LC.
What about you, fellow Paleohackers?
Scotch/Irish and Seminole/Cherokee... very sensitive to carbs. I get fat easily if I eat too many, my blood sugar gets too high. Even when it comes to alcohol, I simply cannot tolerate it. 2 drinks and I'm done.
But on the reservation, the Indian's (we don't say Native American here) inability to process carbs is well known. My theory is because of less time for natural selection to "weed out" those who couldn't adapt easily and pass on that DNA to adapt to a high carb diet to their offspring. Modern medicine stops natural selection in this case. 12000 - 17000 years of adaptation vs only a few hundred since being "adapted" over the barrel of a gun... guess who's not adapted to the neolithic way of eating? Guess where EVERYONE is a diabeitc? Guess where EVERYONE has renal failure. Guess where EVERYONE ends on dialysis and gets DM related amputations?
Oh yeah, guess who CURED his MS and his IDDM with a high fat, moderate protein, low carb diet? Yep...me. :)
So my Scotch/Irish blood made me good looking (the only blonde haired blue eyed guy HERE had to say that)....it didn't give me any carb tolerance. :(
i'm american black with good amount of native american thrown in. let's see... i had zero tolerance for carbs when i started over a year ago. after doing some under the hood fixing to regain leptin/insulin sensitivity(low carb for awhile, then started cycling carbs) now i can pretty much eat all the paleo carbs i want. for instance, i have been eating copious amounts of fruit(strawberries and peaches mostly but others also)all summer and potatoes without limiting myself- i'd estimate i'm averaging 150 carbs a day and maybe twice that on days i choose to workout. i got on the scale for the first time in a month last week and was surprised to see i'd lost another 5 lbs without even trying. i love this paleo thing :)
Scandinavian/Celt. Low carb tolerance, also am now sure I am celiac after stubbornly reintroducing very occasional wheat and soy (mostly in the form of pancake/baking mixes) in 06 and again in 09. Both times led to return of baaaaaad multiple system symptoms. I will never know now as I will never eat grains again, and thus cannot be tested.
Have no idea re: parent/grandparent tolerance as I am an adoptee. However, info I have been able to get included a statement by my birthmother @ age 24yyears that paternal grandparents had both suffered from cancer, but otherwise, esepcially her family was "disgustingly healthy."
I don't have to eat zc or vlc on a daily basis, but did have to go what I know was quite low to lose the 90+lbs originally. I have never counted anything, so can only estimate. The other night I estimated carbs for the first time. I took in about 70 that day I think. I do well doing "change-it-up." This means I change my eating cyclically like crazy - very high fat today, much lower tomorrow. ZC x3 days, then very heavy on the veggies and lesser meat/fish/fowl...if I want to do a carb spike day, it is through nuts, primarily. I am suspicious also that too starchy carb is implicated in some of my autoimmune stuff, whihc I want to deep GONE!
Sugar is NOT my friend. Period. Fruit consumption is permanetly limited to only low gly/low load berries etc and they are infrequent. Do very well with PILES of non starcy carb vegetables. My plate often looks vegetarian - just all low carb veggies + the protein/fat.
From what I can see it's not any particular race or ethnicity. It's the human race who is not designed to handle high levels of carbohydrate. Being able to handle them, IMHO, is simply a matter of how far gone you are in destroying your metabolism. When I was younger I ate whatever I wanted, but eventually I destroyed my metabolism and could no longer tolerate them. I think that will eventually happen to all who eat eat a SAD diet full of heavily processed carbs, regardless of their race or ethnicity.
1/4 Swedish, 1/4 English,1/4 German, 1/4 Irish/Romanian.. I cannot lose weight unless I eat ZERO carbs. I gain weight if I eat over 20 carbs a day.
I m Age 56. (Pre Paleo/ Very low carb)... Chronic candida, Chronic sinus infections, sleep apnea, High blood pressure, Asthma, Hives, Migraine headaches from allergies to food color..I also HAD an Auto Immune Disease,,,....Reflex Sympathetic Dystrophy. Doctors at University of Chicago Hospital said there is NO CURE! Every night at 3am I awoke with horrific headaches. I was taking a cabinet full of meds.
3 Months ago I began to eat a Paleo diet. I went very low carb 2 months ago, but still Paleo. I am now taking NO meds. Blood pressure is 116/68. I am 20 pounds down. My RSD is GONE!!!! I have no symptoms.
I have no idea if I will be able to add some carbs back when I have gotten rid of the next 40 pounds. My last goal is to lose the CPAP I use for apnea...if possible.
Scottish, English, Welsh with a bit of Irish and German. Gain weight if carbs get above 20 grams/day. Allergic reaction from most grains, ie. burning welts on the roof of my mouth. Worse with wheat. I am age 60 but have had weight issues since I was 15.
I'm South Indian. We traditionally eat a lot of rice and lentils. Indians, Hindus in particular, consume huge amounts of diary products.
Even though we've been eating rice for centuries, I don't think Indians are well adapted to it. At least from what I've seen in my family. Most of us are overweight and/or have diabetes. Even though our family does eat meat and animal products, rice/grains are more available and cheaper in India. Meat eating takes place occasionally during the week, but mostly on special occasions and festivals.
I think non-Indian Asians might have a different carb-sensitivity, even though they eat probably the same amount of rice that we do. Maybe its because its not Basmati Rice? Very intriguing indeed.