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Recently some American scientists have given a useful piece of advice to people in industrialized
nations.They say people should eat more of the same kind of food eaten by humans living more than
10,000 years ago.__1__
The scientists say that the human life has changed greatly.Our bodies have not been able to deal
with these changes in lifestyle and this had led to new kinds of sicknesses.__2__ So they are called
"diseases of civilization"．Many cancers and diseases of the blood system are examples of such
diseases.
Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little
alcohol or tobacco,probably none.__3__ However,a change in food is one of the main differences
between life in ancient times and that of today.
Stone Age people hunted wild animals for their meat,which had much less fat than domestic ones.
They ate a lot of fresh wild vegetables and fruits.They did not have milk or any other dairy products,
and they made very little use of grains.__4__ We eat six times more salt than our ancestors.We eat
more sugar.We eat twice as much fat but only one third as much protein and much less vitamin C.
__5__ But scientists say that we would be much healthier if we eat much the same way as our ancestors
did,cutting the amount of fatty,salty and sweet food.
A．These new sicknesses were not known in ancient times.
B．People today probably do not want to live the way people thousands of years ago did.
C．Ancient people also lived in large groups.
D．But today,we eat a lot of these food.
E．Ancient people also got a great deal of physical exercise.
F．In that case,they would live much healthier.
G．People today probably live the same life as people thousands of years ago.