CVS Health Highlights How to Stay Safe as Rising Summer Environmental Health Risks Impact Communities
Summer is often associated with vacations, outdoor recreation, family gatherings, and fresh seasonal produce. However, the season also brings a range of environmental conditions that can significantly affect public health. From worsening air quality caused by wildfire smoke to prolonged heat waves and increasing cases of foodborne illnesses, summer presents unique health challenges that require greater awareness and preventive action.
Recognizing these growing concerns, CVS Health is encouraging individuals and families to take proactive steps to protect themselves throughout the season. By combining health education, pharmacy expertise, virtual care, primary care services, and digital health tools, the company aims to help people better understand environmental health risks and respond before minor health issues become serious medical problems.
According to public health experts, environmental factors such as air pollution, extreme temperatures, and contaminated food or water increasingly influence both short-term and long-term health outcomes. Understanding these risks and knowing when to seek medical attention can help reduce illness, improve safety, and support healthier communities.
Environmental Conditions Are Affecting Health in New Ways
Environmental health refers to the impact that natural and human-made surroundings have on physical well-being. During the summer months, changing weather patterns, rising temperatures, wildfire activity, and increased outdoor exposure combine to create conditions that may affect millions of people.
This year has brought several notable public health concerns across North America.
Smoke drifting from large Canadian wildfires has led to widespread air-quality alerts in numerous U.S. states, exposing millions of people to elevated levels of harmful airborne particles. At the same time, persistent heat waves and high humidity have increased the risk of dehydration, heat exhaustion, and heat stroke, particularly among vulnerable populations.
Public health agencies have also reported an increase in cases of cyclosporiasis, a foodborne illness caused by the microscopic parasite Cyclospora cayetanensis. The illness is often linked to contaminated fresh produce and untreated water and tends to become more common during warmer months.
Together, these issues demonstrate how environmental conditions can influence respiratory health, cardiovascular function, digestive health, and overall well-being.
Understanding Personal Risk
Dr. Paige Wickner, Chief Quality Officer at CVS Health, emphasized that environmental conditions affect nearly every aspect of health, including the air people breathe, the temperatures they experience, and the food they consume.
She explained that while many environmental hazards cannot be completely avoided, understanding individual risk factors and taking practical preventive measures can significantly reduce the likelihood of illness or complications.
Simple actions such as monitoring air-quality reports, staying hydrated, avoiding prolonged exposure to extreme heat, and practicing food safety can make a meaningful difference in protecting both individuals and families during the summer season.
Wildfire Smoke Continues to Affect Air Quality
One of the most visible environmental health concerns this summer has been wildfire smoke.
Large wildfires burning across Canada have produced smoke that has traveled hundreds and sometimes thousands of miles, affecting air quality across much of the United States.
Wildfire smoke contains extremely small particles known as fine particulate matter (PM2.5). Because these particles are so small, they can bypass the body’s normal defenses and travel deep into the lungs. In some cases, they may even enter the bloodstream.
Exposure to these pollutants can irritate the respiratory system and worsen existing health conditions.
Common symptoms associated with wildfire smoke exposure include:
- Persistent coughing
- Shortness of breath
- Wheezing
- Eye irritation
- Sore throat
- Nasal irritation
- Chest discomfort
- Increased allergy symptoms
Although anyone exposed to poor air quality may experience symptoms, certain individuals face significantly greater health risks.
People Most Vulnerable to Poor Air Quality
Health experts identify several groups that are particularly sensitive to wildfire smoke exposure.
These include:
- Older adults
- Infants and young children
- Pregnant individuals
- People with asthma
- Individuals living with chronic obstructive pulmonary disease (COPD)
- Patients with chronic heart disease
- Individuals with weakened immune systems
- People with other chronic respiratory illnesses
For these individuals, even relatively short periods of exposure may worsen existing medical conditions or trigger new health complications.
Children are especially vulnerable because their lungs are still developing and they typically breathe more rapidly than adults. Older adults often have underlying cardiovascular or pulmonary diseases that increase their sensitivity to poor air quality.
Air Pollution Affects More Than the Lungs
While wildfire smoke is commonly associated with respiratory symptoms, researchers have increasingly recognized that air pollution also affects cardiovascular health.
Fine particulate matter has been linked to:
- Increased risk of heart attacks
- Stroke
- Elevated blood pressure
- Irregular heart rhythms
- Worsening heart failure
- Increased hospital admissions
For patients already living with heart disease, prolonged exposure to poor air quality may substantially increase health risks.
Health experts recommend monitoring local air-quality indexes and limiting outdoor activities when pollution levels become unhealthy.
Keeping windows closed, using indoor air filtration when available, and avoiding strenuous outdoor exercise during poor air-quality days can further reduce exposure.
Rising Temperatures Increase Heat-Related Illness
Extreme heat remains another major environmental health concern during summer.
The human body naturally cools itself through sweating, but high temperatures combined with elevated humidity reduce the effectiveness of this process.
When the body can no longer regulate its internal temperature efficiently, dehydration and heat-related illnesses may develop.
Climate trends have contributed to more frequent and longer-lasting heat waves, increasing health risks for millions of people each year.
Who Faces the Greatest Heat Risk?
Although prolonged heat affects everyone, several groups experience much higher risks of heat-related illness.
These include:
- Older adults
- Infants and young children
- Pregnant individuals
- Outdoor workers
- Athletes
- Individuals with cardiovascular disease
- People with respiratory illnesses
- Individuals taking medications that affect hydration or temperature regulation
Certain prescription medications, including some blood pressure medicines, diuretics, psychiatric medications, and other therapies, may reduce the body’s ability to tolerate heat or maintain proper hydration.
Patients taking these medications should discuss heat safety with their healthcare providers or pharmacists.
Recognizing Heat Exhaustion
Heat exhaustion develops when the body loses excessive amounts of water and electrolytes.
Early warning signs include:
- Heavy sweating
- Weakness
- Fatigue
- Dizziness
- Headache
- Muscle cramps
- Nausea
- Rapid heartbeat
- Cool, clammy skin
Without treatment, heat exhaustion can progress into heat stroke.
Moving into a cool environment, drinking fluids, resting, and cooling the body are important first steps when symptoms develop.
Heat Stroke Is a Medical Emergency
Heat stroke represents the most serious form of heat-related illness.
Unlike heat exhaustion, heat stroke occurs when the body’s internal temperature rises to dangerous levels and can no longer regulate itself.
Warning signs include:
- Confusion
- Disorientation
- Loss of consciousness
- Seizures
- Very high body temperature
- Hot skin
- Difficulty speaking
Heat stroke requires immediate emergency medical treatment.
Without rapid intervention, it can lead to permanent organ damage, neurological injury, or death.
Recognizing symptoms early and seeking emergency care immediately can save lives.
Food Safety Remains an Important Environmental Health Issue
Environmental health extends beyond weather and air quality.
Food safety also plays a major role in preventing illness during the summer.
Warmer temperatures create favorable conditions for many bacteria and parasites that contaminate food and water.
One illness receiving increased attention this year is cyclosporiasis.
Understanding Cyclospora Infection
Cyclosporiasis is caused by the parasite Cyclospora cayetanensis.
The parasite spreads primarily through contaminated food or water, particularly fresh fruits and vegetables that have not been adequately washed or handled.
Outbreaks have previously been associated with produce such as:
- Leafy greens
- Cilantro
- Basil
- Raspberries
- Salad mixes
- Other fresh vegetables
Unlike many bacterial foodborne illnesses, Cyclospora infections often require prescription treatment to completely eliminate the parasite.
Symptoms of Cyclosporiasis
Symptoms generally begin about one week after exposure.
Common symptoms include:
- Watery diarrhea
- Abdominal cramps
- Nausea
- Fatigue
- Loss of appetite
- Weight loss
- Bloating
- Low-grade fever
Without treatment, symptoms may continue for several weeks and sometimes recur.
Although the illness is rarely life-threatening, dehydration and prolonged gastrointestinal symptoms can lead to hospitalization in some patients.
Food Safety Practices Reduce Risk
Many foodborne illnesses can be prevented through careful food handling practices.
Health experts recommend:
- Washing hands before preparing food
- Thoroughly rinsing fresh fruits and vegetables
- Separating raw meats from ready-to-eat foods
- Refrigerating perishable foods promptly
- Drinking safe, clean water
- Practicing proper kitchen sanitation
These simple precautions help reduce exposure to many foodborne pathogens during the summer months.
Recognizing Symptoms Early
Although wildfire smoke, heat illness, and Cyclospora infections are unrelated conditions, they all illustrate how environmental factors can affect health in multiple ways.
Dr. Wickner emphasized that persistent symptoms should never be ignored.
Individuals experiencing:
- Difficulty breathing
- Persistent coughing
- Worsening asthma
- Severe dehydration
- Ongoing diarrhea
- Extreme fatigue
- Confusion
- High fever
should contact a healthcare provider promptly.
Early diagnosis often leads to faster treatment and reduces the likelihood of serious complications.
CVS Health’s Comprehensive Support
CVS Health has expanded its resources to help patients navigate seasonal health challenges.
The company’s integrated healthcare model combines pharmacy services, primary care, urgent care, digital health technology, and virtual medical consultations.
Together, these services provide patients with multiple ways to access timely healthcare guidance.
Proactive Digital Health Alerts
One of CVS Health’s innovative approaches involves using predictive risk modeling and weather-related data.
Members identified as being at elevated risk—as well as users of the CVS Health mobile application—may receive proactive notifications before periods of:
- Extreme heat
- Poor air quality
- Other environmental hazards
These alerts provide individuals with time to prepare by adjusting outdoor activities, reviewing medications, obtaining needed supplies, and taking preventive measures.
Digital health technologies are becoming increasingly important tools for helping patients respond to changing environmental conditions before health problems occur.
Pharmacists Play an Important Role
Community pharmacists remain among the most accessible healthcare professionals.
CVS pharmacists help patients understand how environmental conditions may interact with chronic illnesses such as:
- Asthma
- COPD
- Heart disease
- Diabetes
- Hypertension
They can answer questions regarding medication safety during hot weather, recommend appropriate over-the-counter treatments, and advise patients on hydration, respiratory protection, allergy management, and symptom monitoring.
Because many individuals visit pharmacies more frequently than physicians’ offices, pharmacists often serve as an important first point of contact when environmental health concerns arise.
Convenient Care Through MinuteClinic
MinuteClinic providers also offer evaluation and treatment for many common seasonal illnesses.
Healthcare professionals can assess patients experiencing:
- Dehydration
- Heat-related symptoms
- Respiratory complaints
- Gastrointestinal illness
When appropriate, providers may recommend diagnostic testing, discuss recent travel and food exposure history, initiate treatment, or refer patients for additional evaluation.
Same-day appointments, walk-in availability, and virtual care options make it easier for patients to receive timely medical attention without unnecessary delays.
Supporting Older Adults Through Oak Street Health
Older adults often face higher risks during periods of extreme weather.
Oak Street Health, part of CVS Health, focuses on primary care services for Medicare-eligible adults and individuals managing chronic medical conditions.
Beyond clinical care, many Oak Street Health centers provide community gathering spaces where older adults can remain in safe, air-conditioned environments during periods of excessive heat while maintaining valuable social connections.
These community resources help reduce isolation while supporting both physical and mental well-being.
Preparing for Future Environmental Health Challenges
Environmental health concerns are expected to become increasingly important as climate patterns evolve, extreme weather events become more frequent, and public health agencies continue monitoring emerging infectious diseases and food safety issues.
Healthcare organizations like CVS Health are expanding preventive care strategies that combine digital monitoring, pharmacy services, primary care, and patient education to help individuals better manage these evolving risks.
By encouraging early recognition of symptoms, promoting healthy behaviors, improving access to healthcare professionals, and leveraging technology to provide proactive alerts, CVS Health aims to help patients stay healthier throughout the summer.
While environmental conditions cannot always be controlled, informed decision-making and timely medical guidance can significantly reduce their impact. Through education, preventive care, and accessible healthcare services, individuals and families can enjoy the summer season more safely while protecting themselves against the growing environmental health challenges that accompany warmer weather.
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