The Tarahumara Indians are notorious for having incredible athletic ability (able to run 100 miles in a day) and are completely free of atherosclerosis and other western-diseases [1]. They eat a diet based on corn, beans and vegetables… with the macronutrient ratios averaging 10% fat/10% protein/80% starch [2].
Do you really think the Tarahumara Indians have low rates of atherosclerosis because they eat corn and beans....or because they run 100 miles a day? I'm betting on the 100 miles a day. I'm sure you can find studies that show exercise and activity trump diet in the end...especially when you are running 100 miles a day. No amount of potatoes are going to save the couch potato. And the Tarahumara Indians have short lives BTW...but I'm sure are healthy while it lasts. I'm pretty sure none live to any advanced age...in fact, most are already dead at my age.
Edit: and the Tarahumara Indians don't eat corn and beans because they think it is the best diet for them....they eat corn and beans because they live in the 3rd World and corn and beans is all they have...if they are lucky. In reality, I'm sure they are practicing caloric restriction...by necessity.
Ever hear of Jim Fixx, the marathon runner? He use to believe you could eat whatever you want as long as you exercised. Well he died of a heart-attack. Or what about former president Bill Clinton, who was know to run every day... he’s had multiple heart-attacks. If the Tarahumara Indians didn’t eat a starch-based diet, they would have no energy or endurance to run so long. Remember, most athletes, especially endurance runners, practice “carbohydrate-loading”. Without those carbohydrates, you have no energy and your body is forced to go into gluconeogenesis, which breaks down muscle-tissue and converts protein into glucose, not something an athlete would want.
Not all Tarahumara Indians run, like the women who stay home and cook, yet they are free from atherosclerosis. The reason why the Tarahumara have shortened life-expectancies is because they have a high rate of infant-mortality, due to a lack of sanitation. Plus in Caldwell Esselstyn’s study, he found atherosclerosis regressed by just eating a starch-based diet... without exercise! What do make of the Esselstyn's results Hebbeh?
You pick a poor example with Jim Fixx.....the rest of the story:
On July 20, 1984, Fixx died at age 52 of a fulminant
heart attack, after his daily run on
Vermont Route 15 in
Hardwick. The autopsy revealed that
atherosclerosis had blocked one coronary artery 95%, a second 85%, and a third 70%.
[3] Although there were opponents of Fixx's beliefs
[who?] who said this was evidence that running was harmful, medical opinion continued to uphold the link between exercise and longevity.
[4] In 1986 exercise physiologist
Kenneth Cooper published an inventory of the risk factors that might have contributed to Fixx's death.
[5] Granted access to his medical records and
autopsy, and after interviewing his friends and family, Cooper concluded that Fixx was
genetically predisposed (his father died of a heart attack at age 43 and Fixx himself had a congenitally enlarged heart), and had several lifestyle issues. Fixx was a heavy smoker prior to beginning running at age 36, he had a stressful occupation, he had undergone a second divorce, and his weight before he took up running had ballooned to 220 pounds (100 kg).[6]http://en.wikipedia.org/wiki/Jim_FixxMore anti fat propaganda....Fixx would have died regardless of starting running at age 36 or not because of bad genetics and unhealthy lifestyle. Poor genes + smoking + being fat couch potato till age 36 killed Jim Fixx. Too little too late.
Edited by Hebbeh, 13 September 2012 - 01:25 AM.