Is using cannabis in front of children harmful or not?
What do we know today about the effects of cannabis use on the ability of mothers and fathers to respond sensitively and appropriately to the needs of their children?
Children should never use cannabis. However, even if children are not directly exposed to the substance, it could affect their development. (Getty Images)
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In September 2018, South Africa became the third African country to legalise the private home use of cannabis, and a month later, a similar law was passed in Canada. 

While continents apart, both countries have been left in legal grey zones regarding specific issues such as conditions of purchase, and what is allowed when travelling with the substance. 

The article below by The Conversation sees Canadian researchers highlighting the lack of information regarding appropriate usage for parents, a widely neglected concern in both countries. 


Public health agencies are warning parents about using cannabis in the presence of their children. However, parents who use cannabis say that it makes them more empathetic, more patient and more caring towards their young ones.

What is really going on?

One year after the legalization of cannabis in Canada, several questions remain unanswered about the risks and benefits of cannabis use among particular subgroups of the population. Children represent one of these groups.

Indeed, while the impacts of cannabis use have been studied during pregnancy and adolescence, scientific research has largely neglected the effects of legalization on children under the age of 13.

This is probably due to the unanimously shared position that children should under no circumstances consume cannabis. However, even if they are not directly exposed to the substance, cannabis could affect their development.

Indeed, since the latest Canadian cannabis survey suggests that 19 per cent of adults 25 years of age and older would use cannabis, we can assume that many consumers are parents of a young child. But what do we know today about the effects of cannabis use on the ability of mothers and fathers to respond sensitively and appropriately to the needs of their children?

Consumption of cannabis in the last three months in Canada according to age. Centre for Cannabis Statistics, Statistics Canada, 2019

Our interdisciplinary research group at the Université du Québec à Trois-Rivières focuses on situations that place children at risk in their personal development or that compromise parents’ ability to meet their children’s needs. The question of how the legalization of cannabis in Canada affects families therefore arose naturally.


Also see: "I love cannabis, it makes me a better person": This cannabis-using parent is proof the stoner stigma needs to change

More careless or empathetic parents?

A first step was to produce a review of the discourse around parenting and cannabis in the media, government publications and scientific literature. We found that this question raises highly contradictory answers, depending on the group of people invited to answer it.

On the one hand, the statements of institutions mandated to provide care or information related to the health or development of children generally attempt to warn parents about cannabis use.

These publications argue that being under the influence of cannabis in the presence of a child can impair parents’ ability to make good decisions and to protect the child from harm.

In contrast, popular media coverage generally reports parents who use cannabis speaking about the benefit to their parenting skills.

Parents tell the media that cannabis increases their level of empathy and patience, allows them to get closer to their child, makes them more loving and caring and simply makes them better parents.

This is a very unique phenomenon, because we have rarely seen parents publicly state that the use of any substance increases their ability to care for their child.

What does science say about it?

We believe it is critical to shift the debate from public opinion to research laboratories.

To date, the scientific literature on parenting and cannabis use has been particularly limited. Only a few studies have examined the phenomenon and they have significant flaws that greatly limit our ability to draw firm conclusions.

In particular, most studies on the subject have not assessed the context of substance use – for example, whether the parent consumes regularly in the presence of his or her child or only occasionally in his or her absence.

They also have not examined the severity of the use, such as whether it meets the criteria for what clinicians call a substance use disorder.

In addition, parents’ motivations to consume remain poorly defined. Many parents seem to report using cannabis to reduce disorders or difficulties that would already contribute to their parental stress and affect the relationship with their child, such as sleep disorders, depressive or anxious symptoms or pain.

Our preliminary data suggests that cannabis use in a parent is very rare in the absence of other difficulties or risk factors such as being a single parent, living on a modest income, having psychological problems or having experienced potentially traumatic events during their lifetime.

Nevertheless, studies to date, although limited in number and quality, generally report that cannabis use would contribute to more problematic and less warm parental behaviours as well as behavioural problems in their children.

However, it is highly likely that there are several profiles of parents who use cannabis, and that the impact of cannabis use on their parental behaviours and children is distinct from one group to another.

It is rare that such an important social phenomenon with such implications for public health and child development is so little invested with scientific research.

The legalization of cannabis in Canada has encouraged a more open discourse on the subject. It provides an opportunity to implement innovative research initiatives to identify the extent to which and, if applicable, under what conditions it is safe and reasonable for a mother or father to use cannabis.

Berthelot Nicolas, Professeur titulaire, Université du Québec à Trois-Rivières (UQTR) and Carl Lacharité, Professeur titulaire, Université du Québec à Trois-Rivières (UQTR)

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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