Josie Taylor | October 11, 2021
In 2014, Iowans were seeing the real effects that come with climate change. Heavy rainfall, floods and a longer growing season were some of the impacts. The biggest impact, however, was the health effects of climate change.
Repeated heavy rain events caused increased exposures to toxic chemicals and raw sewage because of flood waters. Along with that came degraded water quality, which hurt many in Iowa. In farming states like Iowa, higher water temperatures and decreased mixing have combined with high nutrient levels to create harmful algal blooms that make the water unsuitable for human and animal consumption.
An even more common health effect of climate change was its impact on respiratory and cardiovascular health. With warmer temperatures and higher carbon dioxide levels in the air, plants produce not only more pollen, but also pollen with a higher allergen content. A longer growing season extends the period of exposure to allergens, and new allergenic plants moving northward into Iowa are magnifying the range of exposures. Respiratory problems such as childhood asthma have increased dramatically in prevalence since the 1980s.
Seven years ago, scientists were concerned about new diseases arriving as a result of climate change. They saw new species of mosquitoes and ticks in Iowa capable of transmitting diseases such as Dengue Fever and Ehrlichiosis. With increasing temperatures, more rainfall, and longer summers, these mosquitos and ticks can live longer and expand their range.
Overall, health concerns resulting from climate change were common and important. These issues were one of the biggest concern for Iowans in 2014, but they are still here today.