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Over the 1ast 200 years, people have begun fo Hive longer. and longer. This trend
began in the more economically developed countries。and for some time there was a
growing gap_between the_average_length of life in rich countries and poor countries/Oyer
the past few decades、 however, many Door countries have also made improvements and
they are now close to catching up With the wealthier ones. As a result。 every year there js
a growing number of older people in countries all over the World.
It is a good thing that people are living longer, but it does have some df折cult
aspects. One of these is that more and more people are suffering 所orn diseases aSSociated
with getting older. The number of cases of high blood pressure, heart disease。 cancer。 and
other illnesses is increasing/ m Australia, for instance, 2 Tecent rcpomt said fhat people, on
average, live 25 years longer than they did a hundred ) ow。 there RY
more people suffering from serious illnesses/One coi
have to spend more and more on medical care for o
Many governments have begun to promote
as losing weight and exercising regularly, Sa
as fhe body gets older, even people who have
Recently, research has begun to show that 人
older. When DNA breaks down, inmportant inform
lost. Eventually, serious illnesses may occuki 舞
However。 David Sinclair。a TeSe の
Australia、is working on a way 0
nicotinamide mononucleotide (NMN)
IMice that Were given NMNb
that the chemical was effctive
_make a medicine_for_hummans.
healthier liVes.
