NATCHEZ — A construction worker’s death atop the Mississippi River Bridge this week underscores the danger of working and playing in the heat.

Natchez physician Dr. Kenneth Stubbs said the intense heat and humidity in the South requires local residents take precautions and recognize the signs of more serious heat-related illnesses.

“People die every year from heat-related injuries,” Stubbs said.

The Centers for Disease Control report that more than 600 people die each year in the United States from heat-related illnesses.

Construction worker Alexander Flores was found dead on top of the Mississipi River bridge Wednesday evening after he went missing after work crews stopped working for the day.

Adam County Coroner James Lee said Flores is suspected to have died from heat exhaustion. An autopsy has been ordered to determine the cause.

Like Stubbs, Lee cautioned residents to be alert and recognize the warning signs of serious heat-related problems.

“People should be very, very careful and take water breaks frequently,” Lee said.

Lee said warning signs of more serious heat-related problems include nausea, dizziness and hot red skin.

“All of those are warning signs,” Lee said.

Dr. Stubbs said such warning signs indicate a possible heat stroke and require immediate medical attention.

“(The warning signs) are an indication that they are critically ill and need an emergency medical evaluation.”

Stubbs said less severe symptoms, including pronounced sweating, slight nausea and a headache, could be a sign of heat exhaustion.

“At that point, you need to stop and go to a cool place — preferably inside,” Stubbs said. “In my opinion, you should stop for the day.”

To avoid the symptoms of heat exhaustion or heat stroke, Stubbs said he recommends people take several precautions when working and playing in the heat.

First, Stubbs said he recommends people get slowly acclimated to the heat by going outside every day.

“It helps a great deal to gradually get acclimated — to go outside regularly,” Stubbs.

Secondly, Stubbs recommends people stay hydrated and drink plenty of cool beverages. Water is most important, but sports drinks can also be helpful.

Lastly, Stubbs said people should take regular breaks out of the heat and the sun.

But most importantly, people should listen to their body and pay attention to any potential warning signs, he said.

Stubbs said the risks of heat-related illnesses increase with age and with those that are taking certain medications.

Lee said he is thankful that the area has seen few heat-related deaths. He credits the low numbers with education, including a push a few summers ago to get the word out about the dangers of the heat.