Other potential physical impacts are nausea, diarrhea, headache and fatigue. These can result when sweating doesn't cool the body enough on its own and when someone is dehydrated.

Can you get diarrhea from heat?

Heat-related illnesses can cause serious symptoms such as diarrhea, vomiting, headache, seizures, and even death, so it is important that you are able to recognize the signs before your next outdoor adventure.

Can the Heat upset your stomach?

Extremely hot weather makes us sweat and frizzes some people's hair, but a new study reports for the first time that it can also worsen some gastrointestinal (GI) problems.