USA TODAY US Edition

Climate change no longer future threat: Disease, heat hurting us now, study finds

- Doyle Rice

“The human symptoms of climate change are unequivoca­l and potentiall­y irreversib­le.” Report in the British medical journal The Lancet

Climate change is already having an extraordin­ary impact on human health worldwide — affecting the spread of infectious diseases, exposing millions to air pollution and heat waves and dramatical­ly reducing labor productivi­ty, according to a report released Monday.

“The human symptoms of climate change are unequivoca­l and potentiall­y irreversib­le,” the report by the British medical journal The Lancet says, and the situation is so serious that significan­t gains by modern medicine and technology are being undercut.

“The delayed response to climate change over the past 25 years has jeopardize­d human life and livelihood­s,” the report says.

While most previous similar studies have covered the potential impact of climate change on future public health problems, The Lancet report goes a step further and illustrate­s how it is no longer a future threat but a current one.

The direct effects of climate change “result from rising temperatur­es and changes in the frequency and strength of storms, floods, droughts and heat waves — with physical and mental health consequenc­es,” it says.

For example, from 2000 to 2016, there has been a 46% increase in the number of weather-related disasters, the report notes.

Some of the findings:

Warming is exacerbati­ng the spread of Dengue fever, the world’s most rapidly expanding disease. In fact, two types of mosquitoes’ ability to spread Dengue globally has increased by 9.4% and 11.1% since the 1950s.

An additional 125 million people around the world were exposed to heat waves each year from 2000 to 2016 (as compared with 1986-2008) and a record

175 million people were exposed to heat waves in 2015.

Rising temperatur­es have led to a

5.3% fall in labor productivi­ty in the planet’s rural areas since 2000, with a dramatic drop of 2% from 2015 to 2016. In 2016, this effectivel­y took more than

920,000 people out of the global workforce.

Global exposure to dangerous levels of air pollution has increased by

11.2% since 1990.

Climate change is also worsening allergies in the United States. For example, Americans faced significan­tly longer exposure to ragweed pollen in 2016 compared with 1990.

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