Wednesday, February 8, 2023

A comprehensive study points to genetics as a possible cause of tobacco and alcohol addiction.


  • Research among more than 3.4 million people has identified more than 3,500 genetic variants that could potentially affect tobacco and alcohol consumption.


  • More than 3.4 million people of African, American, East Asian and European descent participated in the report


  • The researchers found that most genetic associations for drinking and smoking have similar effects across race.

A macro study has identified There are over 3,500 genetic variants that could potentially influence tobacco and alcohol addiction. Although both behaviors are determined by environmental and social factors, the authors of this study published by the journal Nature, show that there is evidence that genetics plays a fundamental role in this type of consumption. More than 3.4 million people of African, American, East Asian and European descent have participated in the research.

The truth is that smoking and drinking are significant risk factors for many physical and mental illnesses, including heart disease and psychiatric disorders. “If we can use this information to predict someone’s risk of nicotine or alcohol dependence, we can intervene early and potentially prevent many deaths.” says one of the study authors, Dajiang Liu, a statistical geneticist at Penn State School of Medicine in Hershey, Pennsylvania.

In the pooled sample, the authors identified 3,823 genetic variants that were associated with smoking or drinking behavior: Of those, 39 were related to age of onset of tobacco use, 243 to number of cigarettes smoked per day and 849 to number of alcoholic beverages per week.

equality among all races

The researchers found that most genetic associations for drinking and smoking have similar effects across race. “We found similar heritability estimates [para los rasgos] among the ancients… which suggests that, in general, The genetic makeup of these behaviors is similar between ancestors,” says fellow author Gretchen Saunders, a psychologist at the University of Minnesota, Minneapolis.

In any case, The similarity between ancestries may be partly due to the fact that most of the non-European groups included in the study live in the United States. And so are similar environmental influences, such as public health policies and the availability of alcohol and tobacco, says Ananya Chowdhury, a geneticist at the University of the Witwatersrand in Johannesburg, South Africa.

Nation World News Desk
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