The Department of Health (DOH) has once again cautioned the public about the risks of heat-related illnesses as hot weather and high heat indices continue to affect the country.

During a Palace briefing on Tuesday, Health Secretary Teodoro Herbosa emphasized that while anyone can suffer from heat-related conditions such as dehydration, heat cramps, heat exhaustion, and heat stroke, vulnerable groups—including senior citizens, children, and individuals with pre-existing health issues—are at greater risk.

Common symptoms include dizziness, fever, numbness, fainting, and skin that feels warm and appears reddish.

“Older adults, young children, and those with illnesses are especially vulnerable. Make sure they are not exposed to hot environments,” Herbosa said.

The U.S. Centers for Disease Control and Prevention explains that aging bodies become less efficient at regulating temperature due to decreased sweating and blood flow to the skin. Older adults also take longer to adapt to sudden changes in temperature. Meanwhile, children’s higher metabolic rates cause them to produce and lose heat more rapidly, making them more prone to dehydration.

Chronic conditions such as diabetes, heart disease, and obesity can impair the body's ability to regulate temperature, while certain medications may interfere with sweating and temperature control.

“Heat-related illnesses often begin with intense thirst and cold sweating. If left unaddressed, it can lead to collapse,” Herbosa explained. “If you feel thirsty, drink water immediately. Fatigue usually follows thirst. If you feel weak, it’s time to rest in a shaded or air-conditioned area.”

While heat-related illnesses can become emergencies, Herbosa noted that most cases improve quickly with proper and timely treatment.

To prevent such illnesses, the public is urged to stay indoors between 9 a.m. and 4 p.m., stay well-hydrated, wear light and breathable clothing, and use sun protection such as sunscreen, hats, umbrellas, or handheld fans.