Summer Is Coming and Your Parent May Not Feel the Heat — How to Keep Aging Adults Safe When Temperatures Rise

By Patrick Mapile, Founder of CarePali Home Care — West Los Angeles

As summer approaches, the CDC reports that adults over 65 account for the highest proportion of heat-related deaths in the United States — a risk that has increased by 56 percent since 2000 according to a study in Environmental Health Perspectives. The National Weather Service confirms that heat kills more Americans annually than hurricanes, tornadoes, and floods combined. In Los Angeles County specifically, heat waves are becoming more frequent and intense, with climate projections from UCLA's Institute of the Environment and Sustainability predicting a tripling of extreme heat days by mid-century. For families caring for aging parents in West LA, understanding heat vulnerability and planning ahead could be lifesaving.

Why Older Adults Are Uniquely Vulnerable to Heat

The physiology of aging creates multiple vulnerabilities to heat. Research published in the Journal of Applied Physiology found that adults over 65 produce 25 to 30 percent less sweat than younger adults, significantly reducing the body's primary cooling mechanism. The American Journal of Physiology reports that thirst sensation diminishes by approximately 40 percent with age, meaning older adults become dangerously dehydrated before they feel thirsty. The cardiovascular system's ability to increase blood flow to the skin for cooling — a critical thermoregulatory function — declines measurably after age 60.

Medications compound these vulnerabilities. The European Journal of Clinical Pharmacology found that several common medication classes increase heat-related risk by a factor of 2 to 2.5: diuretics accelerate fluid loss, beta-blockers limit the heart rate increase needed for thermoregulation, anticholinergics suppress sweating, and antipsychotics can impair the hypothalamus's temperature regulation. The Journal of the American Geriatrics Society estimates that 40 percent of heat-related deaths among older adults involve a medication-related contributing factor.

Indoor Heat: The Overlooked Danger

A critical finding from the CDC is that more than 40 percent of heat-related deaths among older adults occur indoors. Research published in Environmental Research found that indoor temperatures in homes without air conditioning can exceed outdoor temperatures by 5 to 10 degrees Fahrenheit, particularly in upper-floor apartments and poorly insulated homes. Many older adults resist using air conditioning due to cost concerns, discomfort with cold air, or the belief that they do not need it — the same impaired temperature perception that makes them vulnerable in the first place.

A study from the LA County Department of Public Health found that during heat events, older adults living alone are at dramatically higher risk than those with regular social contact. The reason is straightforward: someone experiencing heat exhaustion may not recognize their own symptoms — which include confusion, fatigue, dizziness, and nausea — and without another person present to notice the signs, the condition can progress to heat stroke, which carries a mortality rate of 10 to 50 percent even with medical treatment.

Evidence-Based Prevention Strategies

The National Institute on Aging recommends several concrete prevention measures for older adults during warm months. Hydration is primary: older adults should aim for at least 64 ounces of water daily in warm weather, increasing during heat waves, regardless of whether they feel thirsty. The American Geriatrics Society recommends checking hydration status through urine color — dark yellow indicates dehydration requiring immediate attention.

Home environment modifications are equally important. The EPA recommends maintaining indoor temperatures below 80 degrees Fahrenheit for vulnerable populations. For homes without central air conditioning, window units in the most-used room and bedroom provide significant protection. California's LIHEAP program provides financial assistance for energy costs, and LADWP offers a medical baseline allowance that provides additional electricity at a reduced rate for households with medical needs. During extreme heat events, LA County activates cooling centers throughout the region — 211 LA provides locations and hours.

Creating a Summer Safety Plan

The Ready Campaign, a FEMA initiative, recommends that families with vulnerable older adults create a specific heat emergency plan before summer arrives. This should include identifying who will check on the older adult daily during heat events, ensuring access to cool spaces, maintaining a current medication list to discuss heat interactions with their physician, and establishing clear criteria for when to seek emergency medical attention.

Warning signs that require immediate action include hot dry skin without sweating, body temperature above 103 degrees, confusion or altered mental status, rapid strong pulse, and loss of consciousness. The Red Cross advises calling 911 immediately for suspected heat stroke while moving the person to the coolest area available and applying cool cloths to wrists, neck, armpits, and groin.

West Los Angeles Resources

LA County's 211 hotline provides real-time information on cooling center locations during heat events. The WISE and Healthy Aging senior centers in Santa Monica serve as cooling centers and social gathering points during heat waves. The LA County Area Agency on Aging can connect families with wellness check programs. LADWP and SoCalGas offer energy assistance programs for qualifying older adults.

At CarePali, summer safety is built into our care approach. Our home care aides monitor hydration, adjust home environments, observe for heat-related symptoms, and ensure our clients are comfortable and safe as temperatures rise. If your parent lives alone in West LA and you worry about them during summer heat, having a trained caregiver present during the hottest parts of the day can provide the observation and intervention that prevents a heat emergency. We are here to help you plan ahead.