Mouse Study Links Fathers' Nicotine Use to Diabetes Risk in Offspring

Findings suggest fathers' tobacco consumption may have lasting effects on children's metabolic health.

Mar. 13, 2026 at 12:22am

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A study published in the Journal of the Endocrine Society found that when male mice consumed nicotine, their offspring exhibited metabolic alterations that appear to impact how the body processes sugar, potentially increasing the risk of diabetes. The researchers monitored the offspring of male mice exposed to nicotine and found differences in insulin levels, fasting glucose, and liver function compared to a control group.

Why it matters

Diabetes affects over 12% of Americans and is a leading cause of other serious health conditions. This research suggests that fathers' use of tobacco products, including cigarettes and e-cigarettes, may contribute to the diabetes epidemic, particularly among their children. Addressing paternal health factors could be an important part of preconception care and diabetes prevention.

The details

The study, conducted by researchers at the University of California, Santa Cruz, exposed male mice to nicotine in their drinking water. The offspring of these mice were then compared to a control group. The researchers found that female offspring of the nicotine-exposed males had lower insulin levels and lower fasting glucose, while male offspring had lower blood glucose and altered liver function. These metabolic changes could increase the risk of developing diabetes and related conditions like fatty liver disease.

  • The study was published online in March 2026.

The players

Raquel Chamorro-Garcia

The senior author of the study and an assistant professor of microbiology and environmental toxicology at the University of California, Santa Cruz.

University of California, Santa Cruz

The institution where the research was conducted.

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What they’re saying

“When male mice consumed nicotine in their drinking water, their offspring had metabolic alterations that appear to impact the way the body metabolizes sugar.”

— Raquel Chamorro-Garcia, Study Senior Author

“Considering the evidence that male exposure can increase the likelihood of their children developing chronic diseases, it is crucial to incorporate male health into preconception care.”

— Raquel Chamorro-Garcia, Assistant Professor

What’s next

The researchers plan to further investigate the mechanisms by which paternal nicotine exposure can influence metabolic health in offspring, with the goal of developing interventions to reduce the risk of diabetes.

The takeaway

This study highlights the importance of addressing fathers' health, including tobacco use, as part of preconception care and diabetes prevention efforts. Limiting risk factors like smoking and vaping in men could have significant impacts on the metabolic health of their children.