Mothers who drink heavily risk passing down their bad habits to their children, experts have claimed.
According to the researchers, teenagers whose mothers "always" drank were nearly twice as likely to have alcohol problems in adulthood, the Daily Mail reported.
The authors added that ministers should focus more on parenting instead of minimum pricing to tackle binge drinking.
They warn that many parents - particularly the middle class - "reach for a bottle of wine at night to cope with the stress."
While adults may think it has "no impact on their families," this habit may be "hampering" their ability to be effective parents.
The research by Demos claims that as many as 2.5 million children - a fifth of the total - live with a parent who drinks hazardously.
The study insists that the example set by a family is far more important than the proposed minimum price per unit of alcohol.
Demos examined a survey of 17,000 adults in their 30s questioned about their alcohol consumption. They were asked how often their mother and father drank when they were 16, with the options always, often, sometimes or never.
The respondents also ranked the effectiveness of the parenting they had received, with four categories ranging from "tough love" at the top to "laissez-faire" at the bottom.
Those whose mothers "always" drank were found to be 1.7 times more likely to admit they were now hazardous drinkers themselves.
This was defined as exceeding the NHS recommended safe drinking level of 21 units a week for a man or 14 units for a woman.
Similarly, mothers who had "always" drunk alcohol were three times more likely to be described by their children as "disengaged." The report claimed that a fifth of children, including 90,000 babies, live in families where at least one parent drank "hazardously." (ANI)