The hunter-gatherer tribes that today live as our prehistoric 21 human ancestors consume primarily a vegetable diet supplementing 22 with animal foods. An analysis of 58 societies of modem hunter- gatherers, including the Kung of southern Africa, revealed that one half emphasize gathering plant foods, one-third concentrate on fishing and only one-sixth are primarily hunters. Overall, two-thirds and more of the hunter-gatherer's calories come from plants. Detailed 23 studies of the Kung by the food scientists at the University of London, showed that gathering is a more productive source of food than is hunting. An hour of hunting yields in average about 100 24 edible calories, as an hour of gathering produces 240. 25 Plant foods provide for 60 percent to 80 percent of the Kung 26 diet, and no one goes hungry when the hunt fails. Interestingly, if they escape fatal infections or accidents, these contemporary aborigines live to old ages despite of the absence of medical care. 27 They experience no obesity, no middle-aged spread, little dental decay, no high blood pressure, on heart disease, and their blood cholesterol levels are very low (about half of the average American 28 adult), if no one is suggesting that we return to an aboriginal life 29 style, we certainly could use their eating habits as a model for 30 healthier diet.