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Table 3 Qualitative analysis of factors relating to concerns or lack of concerns (N = 14)

From: Cannabis use, decision making, and perceptions of risk among breastfeeding individuals: the Lactation and Cannabis (LAC) Study

Exemplary quotes1

Key features of quotes by theme

Theme 1 : Identifying research gaps and seeking out resources

“I have done a lot of personal research […]”

(Participant F, has very few concerns, medical use)

Experience seeking out resources and research when making the decision to use cannabis while breastfeeding

“From what I have read there doesn’t seem to be any harm in smoking cannabis while breastfeeding […]” (Participant N, has very few concerns, non-medical use)

"I joined a Facebook group with other moms who smoke and breastfeed, and they help provide resources when anyone has questions."

(Participant L, has very few concerns, non-medical use)

“I know many mothers who breastfeed and smoke weed. They have healthy babies, and they are able to tend to babies’ every need in a less stressful manner, which overall, benefits the babies even more.”

(Participant D, has no concerns, non-medical use)

Use of anecdotal evidence from other people in their lives who used cannabis while breastfeeding

“I asked a lot of people who had smoked and breastfed and they all had positive experiences and no side effects in their babies […]”

(Participant I, has very few concerns, medical use)

“My concern is the lack of research […] I do feel guilt concerned about it just because we don't know the long-term effects at this current time, and dosing is a large factor.”

(Participant H, has a lot of concerns, medical use)

Identified lack of research on effects of cannabis use during lactation on infant development as a reason for concern

“There's not a lot of research out there to help me understand the way it affects my baby's development so that brings up concerns.”

(Participant G, has a few concerns, medical use)

Theme 2: Monitoring child’s health and development2

“I have been concerned about the effect it will have on my baby’s development.”

(Participant M, has a few concerns, medical use)

Concerns related to potential effects of cannabis use on their infants’ development

“She doesn’t seem to have any reactions when I use cannabis.”

(Participant E, has very few concerns, medical use)

Observation of their infants for any reactions to cannabis use (e.g., appetite, sleep, weight/length/growth, doctors’ feedback) as evidence that their children were not being negatively affected

"My son is very smart, healthy, eats great, sleeps great, and is bigger than other children I know his age that are not breastfed or do not have exposure to THC.” (Participant C, has very few concerns, medical use)

“I have never heard of cannabis causing issues and have never seen them in my own kids.”

(Participant A, has no concerns, non-medical use)

“[…] my child is doing exceptionally well according to his doctor.”

(Participant F, has very few concerns, medical use)

Theme 3: Monitoring and titrating use

“[…] I feel safe to use it since I also don't have a high/strong use.”

(Participant E, has very few concerns, medical use)

Felt safe using cannabis due to perceived low use or purposefully reduced cannabis use to reduce risk

“I try to limit my use due to guilt about it […]”

(Participant H, has a lot of concerns, medical use)

“Slight concerns only because there is not much research on the effects it has on children which is why […] I use very little amounts.”

(Participant J, has very few concerns, non-medical use)

Theme 4: Comparative risk between cannabis and other substances, and acknowledging costs and benefits

“Cannabis is a plant.”

(Participant K, has no concerns, non-medical use)

Description of cannabis as "natural" or highlighting its status as a plant to draw distinction between cannabis and pharmaceuticals

“I have little concern because cannabis is a natural medicine, but I’m still aware that everything including “good things” have side effects […]”

(Participant B, has very few concerns, non-medical use)

“[…] it truly does help with anxiety and depression. I also justify it in my head because I would rather occasionally use cannabis vs taking long term anxiety medications or benzodiazepines. I think it has less negative effects compared to some of the pharmaceuticals available. (Participant H, has a lot of concerns, medical use)

Highlighted tradeoffs between the unknown risks of cannabis use while breastfeeding and alternative medication or no medication, concluding that the perceived benefits of using cannabis outweighed the risks

“I […] have made the educated decision that the benefit outweighs the possible risks.”

(Participant F, has very few concerns, medical use)

  1. 1Minor grammatical edits (e.g., spelling and punctuation) have been made to the exemplary statements above. We have included at least one quote from each participant who chose to expand on their concerns or lack of concerns, along with their level of concern and medical or non-medical use group for context
  2. 2While other themes were endorsed by roughly equal numbers of medical and non-medical users, only medical users’ responses were categorized into this theme, indicating that concern regarding potential developmental effects of cannabis use is particularly salient to people who use cannabis for medical reasons