Unravelling the Risk of Poisoning From Nicotine-Containing Tobacco Products in Children Less Than Five Years of Age.
Level 5 - mechanism / opinion, no new human data
Toxicological risk assessment and dose modeling based on published literature and product characteristics
PubMed 38484179 · doi:10.1093/ntr/ntae044
What was done
The author used toxicological principles of human health risk assessment, published literature from historical exposures, and tobacco product characteristics to estimate acute oral toxicological risk thresholds and lowest lethal doses (LDLO) for children under five years of age across traditional and electronic nicotine delivery system (ENDS) products.
What was found
Reference levels for non-lethal oral nicotine exposure were estimated at 0.04 mg/kg (dose not likely requiring medical care) and 0.2 mg/kg (dose potentially requiring medical care). The estimated weight-based oral LDLO in children under five was 1–14 mg/kg based on adult data. Depending on liquid nicotine concentration (ranging from 3 to 72 mg/mL), the estimated lethal volume in young children ranged from 13–40 mL for a 3 mg/mL solution down to 0.5–2 mL for a 72 mg/mL solution.
Why it matters
These calculations establish specific volume thresholds for acute toxicity, highlighting that lethal doses can be reached with sub-teaspoon quantities of high-concentration e-liquids in toddlers.
Limits
The dose thresholds are theoretical estimations derived from adult literature rather than direct clinical measurements or controlled prospective data in children. The model cannot account for individual biological variability, spontaneous emesis, or real-world absorption differences.
Cited by
- supports Consuming all the nicotine contained in a single carton of cigarettes is lethal.