Bad Health Habits Can Affect Three Generations   

Bad Health Habits Can Affect Three Generations


Children born today could be at risk of asthma because of the smoking habits of their grandmothers, scientists said yesterday.

Researchers from California have found that mothers who smoke during pregnancy might not only be increasing the chance of their children suffering from asthma, but also their grandchildren.

The study, performed on rats, is part of a growing body of work in epigenetics – the analysis of environmental effects on genes – which shows how the lifestyle choices of grandparents and even great-grandparents can have genetic consequences that echo down the generations.

It might provide some clues as to why asthma rates today are so high, despite the fact that the environment in such of the west is less polluted than it once was.

Published in the journal, the research demonstrated that giving rats nicotine impaired the development of their growing foetus’s lungs in a way consistent with asthma. But they also found that those foetus’s eventual offspring, who had not themselves been exposed to nicotine, were affected.

Epigenetic makers may be the mechanism behind how nicotine-induced stems are transmitted from one generation to the next.

There was another possibility-that the effects on the second generation’s came about as a consequences of direct toxic influences on the first generation's reproductive organs.

The problem is in the pregnant mother. In the baby are already the cells that are going to make the next generation. You’ve always got three generations in one. They will be exposed to some extent by the direct effects of nicotine. 


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