As surprising as it may seem, we are not all equal, at birth, when it comes to the risk of falling into alcoholism or smoking.
DNA would contribute half to addiction to drink or cigarettes, the other half coming from so-called “environmental” factors, such as the cultural context in which one evolves or public health policies.
This significant part of genetics has been measured by studying the behavior of twins who grew up in different families (the “real” ones having the same DNA).
As for knowing the "cocktail" of genes that may be involved in these addictions, it's more complicated...
Subscribe to read more
Already subscribed?
To log in