As Temperature Rises Does the Risk of Gestational Diabetes Spike?
The higher the thermometer climbs outside, the higher the risk of gestational diabetes, according to Canadian researchers.
In the database study, and after adjusting for influential risk factors, each 10°C increase in mean 30-day outdoor air temperature was associated with a 6%-9% relative increase in the risk of gestational diabetes mellitus, according to Gillian Booth, MD, of St. Michael's Hospital in Toronto, and colleagues.
Gestational diabetes occurred among 4.6% of women who were exposed to extremely cold mean outdoor air temperatures (≤ -10°C) in the 30-day period before screening. That percentage increased to 7.7% among those exposed to overly hot mean 30-day temperatures (≥ 24°C). Each 10°C increase in mean 30-day temperature was associated with a corresponding 1.06 (95% CI 1.04-1.07) times higher likelihood of gestational diabetes, after adjusting for factors including maternal age, parity, neighborhood income quintile, world region, and year, they wrote in the CMAJ.
"We observed a direct relation between outdoor temperature and the risk of gestational diabetes among nearly 400,000 women residing in a single urban area in Canada," Booth stated in a press release.
Booth's group used databases at the Institute for Clinical Evaluative Sciences and included women in the greater Toronto area who gave birth from Apr. 1, 2002 to March 31, 2014. Those with "extreme" preterm (<28-week gestation) or post-term (>42-week gestation) births were excluded from the study population, as were those who had type 1 or type 2 diabetes before they became pregnant.
Ultimately, 5 Continue reading