The health effects of heat can occur rapidly and affect the entire population, including healthy people of all ages. The risk increases with the duration and intensity of exposure.

Older adults, young children, pregnant women, people with chronic illnesses, workers exposed to heat, and people with disabilities, those in precarious situations, or those who are isolated remain particularly vulnerable.

Ongoing Efforts

Since the start of the season, the Provence-Alpes-Côte d’Azur Regional Health Agency (ARS) has continued to coordinate with
all stakeholders in the healthcare system to monitor the health situation,
anticipate potential strains, and ensure the continuity of patient care. Healthcare facilities, private practitioners, and medical-social
institutions caring for the elderly or people with disabilities remain fully mobilized.

Particular attention continues to be paid to monitoring hospital activity and emergency medical services to anticipate any strain on the system.

Health Impacts Observed During the First Heat Waves

Epidemiological surveillance conducted by Santé publique France Paca-Corse revealed, during the first two heat waves of the season, an increase in emergency room visits, hospitalizations, and SOS Médecins medical interventions for indicators specific to intense heat exposure in the region (Heat Waves and Health in Provence-Alpes-Côte d’Azur. Bulletin of July 29, 2026. | Santé publique France).

Beyond these key indicators used for early warning (heatstroke, dehydration, hyponatremia), heat has far-reaching impacts on health and can destabilize precarious clinical conditions and contribute to the decompensation of chronic conditions.
Furthermore, these rising temperatures encourage swimming and water activities, increasing the risk of accidental drowning and the number of drowning deaths. Simple precautions ensure safe swimming: actively and constantly supervise young children, choose supervised areas, follow safety guidelines, and be mindful of your physical condition (Learn more: Swim Safely by Taking the Right Precautions | Santé publique France).

Heat waves can also be accompanied by episodes of ozone pollution, which can exacerbate respiratory and cardiovascular conditions, particularly among the most vulnerable individuals. It is recommended to limit intense outdoor physical activity and to follow the recommendations of health authorities.

Following the right precautions remains essential

As a heat wave persists over an extended period, it is essential to continue following the best practices outlined below:

1. drink water regularly, without waiting until you’re thirsty;
2. stay cool, either at home or in an air-conditioned or cooled location near your home (library, movie theater, stores, swimming pool, cooled room, etc.), and avoid going out until the end of the day;
3. opt for light activities and limit intense physical and sports activities;
4. opt for fresh, balanced meals;
5. splash water on your body several times a day;
6. keep your home cool by closing shutters and windows during the day and ventilating at night;
7. Limit coffee and avoid alcohol: these beverages contribute to dehydration 
8. Check in on the most vulnerable and make sure they have the necessary means to cool off and stay hydrated.

During heat waves, certain medications may impair the body’s defense mechanisms. If in doubt, consult your doctor or pharmacist (Learn more: An Update on Your Treatments – ANSM)

If you experience any suggestive symptoms (headaches, cramps, nausea), call 15

A healthcare professional will direct you to the most appropriate care: medical advice, an in-person consultation, a telemedicine consultation, an on-call medical center, the emergency department, or, if necessary, medical transport.

Launch of the “Heat Wave Info Service” Toll-Free Number

The Ministry of Labor, Health, Solidarity, and Families has activated the “Heat Wave Info Service” toll-free number: 0800 06 66 66. It is available from 8 a.m. to 7 p.m. (toll-free from mainland France) and will remain active until the end of the heat wave. This number provides advice on how to protect yourself and those around you, especially the most vulnerable.

Find practical advice, steps to take, and tips for coping with the heat on the “Living with the Heat” website from Santé publique France.

Download our communication kits (heat waves, access to healthcare) by clicking here