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(This paragraph will go below the first two paragraphs under Health Effects of the Urban Heat Islands article)

Increased temperatures have been reported to cause heat stroke, heat exhaustion, heat syncope, and heat cramps. Some studies have also looked at how severe heat stroke can lead to permanent damage to organ systems. This damage can increase the risk of early mortality because the damage can cause severe impairment in organ function. Other complications of heat stroke include respiratory distress syndrome in adults and disseminated intravascular coagulation. Some researchers have noted that any compromise to the human body’s ability to thermoregulate would in theory increase risk of mortality. This includes illnesses that may affect a person’s mobility, awareness, or behavior. Researchers have noted that individuals with cognitive health issues (e.g. depression, dementia, Parkinson’s disease) are more at risk when faced with high temperatures and “need to take extra care” as cognitive performance has been shown to be differentially affected by heat. People with diabetes, are overweight, have sleep deprivation, or have cardiovascular/cerebrovascular conditions should avoid too much heat exposure. Some common medications that have an effect on thermoregulation can also increase the risk of mortality. Specific examples include anticholinergics, diuretics, phenotiazines and barbiturates. Not only health, but heat can also affect behavior. A U.S. study suggests that heat can make people more irritable and aggressive, noting that violent crimes increased by 4.58 out of 100,000 for every one degree increase in temperature.