Category: Health

The Real Cost of Fossil Fuels on Our Health

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Pump-jack
Pump-jack mining crude oil with the sunset. Photo by Zbynek Burival on Unsplash.

Fossil-Fuel Pollution and Its Dire Impact on Global Health

Let’s talk about how burning fossil fuels, like coal, oil, and gas, isn’t just bad for the planet—they are harmful to our health too, particularly through the production of petrochemicals that are foundational to many industrial and everyday products. When we talk about climate change, we’re also talking about something that directly touches our lives, through the air we breathe, the water we drink, and even the products we use every day. Drawing directly from the insights from the New England Journal of Medicine‘s review article, “Health Effects of Fossil Fuel–Derived Endocrine Disruptors” by Dr. Tracey J. Woodruff, it’s evident that the adverse health impacts of fossil-fuel pollution include harmful health implications, including cancer.

Global Impact of Pollution on Health

Did you know that pollution from chemicals is a top reason people are dying prematurely, especially in poorer countries? Most of these deaths come from places that can least afford to deal with these problems. Pollution disproportionately affects low- and middle-income countries, with over 90% of pollution-related deaths occurring in these regions. Experts think over 1.8 million people die each year because of this pollution, and that number might even be too low since we don’t know the full effects of all the chemicals due to the lack of comprehensive studies.

Growing Concern of Petrochemical-Related Illnesses

A big chunk of this problem comes from fossil fuels. When we dig them up and use them, they release a bunch of nasty chemicals. Many of these chemicals interfere with the endocrine system, acting as endocrine-disrupting chemicals (EDCs). Some of these chemicals mess with our hormones, leading to all sorts of health issues, from cancer to problems having babies. It’s a big deal because these chemicals are in so many things around us—from the plastic in toys and bottles to the makeup we might wear to pesticides on our fruits and vegetables.

Over the last seventy years or so, as we’ve used more fossil fuels and made more stuff from petrochemicals, we’ve seen more people getting sick with long-term illnesses. And it’s not just happening in one place but all over the world. This trend underscores the critical need for awareness and action to mitigate the health risks associated with petrochemical exposure.

Cancer and Petrochemical Exposure

Cancer is a big focus here. It’s heartbreaking how common it has become, and part of the blame lies with the chemicals that come from using fossil fuels. Substances like benzene, found in crude oil and gasoline, and formaldehyde, a byproduct of natural gas combustion, have been classified as carcinogens with strong links to leukemia and nasopharyngeal cancer, respectively. These and other chemicals, pervasive in our environment and daily lives, are not passive occupants. They sneak into our bodies and mess with the way our cells work, leading to diseases like cancer. You might not even know you’re being exposed to them until it’s too late.

Pervasive Problem of Plastics

Moreover, the production and widespread use of plastics, a hallmark of petrochemical derivatives, contribute to the dispersion of these harmful substances into the environment, food chains, and ultimately, our bodies. Phthalates and bisphenols, used to make plastics softer and more durable, have been under scrutiny for their estrogen-like effects, which can potentially lead to breast and other hormone-related cancers.

Taking Action Against Petrochemical Pollution

So, what can we do? For starters, we need to be mindful of our exposure to these chemicals. But that’s not enough. We need big changes, like laws and policies, to make our environment cleaner and safer for everyone. And we’ve got to think about the future and shift towards sustainable and renewable energy sources.

To wrap it up, the damage from fossil fuels to our health is huge, and it’s something we can’t ignore. It’s time for all of us to pay attention, push for change, and take steps toward a world where we’re not risking our health just by living in it. Together, we can fight for a healthier, cleaner future.

Despite shrinking ‘Dead Zone’, Gulf Coast grapples with massive fish die-off

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A shrimp boat trawls for shrimp in the Gulf of Mexico. (Image credit: NOAA Fisheries)
A shrimp boat trawls for shrimp in the Gulf of Mexico. (Image credit: NOAA Fisheries)

NOAA anticipated a remarkably smaller ‘Dead Zone’ in Gulf of Mexico this summer

The National Oceanic and Atmospheric Administration (NOAA) predicted a “dead zone” in the Gulf of Mexico this summer, an oxygen-deprived area spanning about 4,155 square miles that can prove lethal to marine life. This estimate, while significant, is lower than the 36-year average of 5,364 square miles. The dead zone occurs annually due to excessive nutrient pollution from human activities within the Mississippi River watershed.

The US Geological Survey (USGS) tracks key factors such as river discharge and nutrient loading, which contribute to the dead zone. In May 2023, there was a 33% decrease in river discharge, a 42% decrease in nitrate, and a 5% decrease in phosphorus levels compared to the long-term averages from 1980 to 2022. These nutrients instigate an algal bloom that, upon death and decay, depletes water oxygen levels, endangering marine life, especially bottom-dwelling species.

NOAA’s hypoxia forecasts are designed to help coastal managers and stakeholders proactively mitigate the impacts of hypoxia. The data also inform nutrient reduction targets aimed at curbing future dead zones. The Interagency Mississippi River and Gulf of Mexico Hypoxia Task Force aims to reduce the dead zone to 1,900 square miles by 2035.

Despite smaller ‘Dead Zone’, thousands of fish perish on Texas Gulf Coast

The New York Times along with several other media outlets reported that on Friday, tens of thousands of fish started washing ashore along the Texas Gulf Coast due to a combination of environmental conditions that depleted oxygen levels in the warm waters. The incident was described as a “perfect storm” of poor conditions by Bryan Frazier, the director of Brazoria County Parks Department. Warm water holds less oxygen than cold water, and the calm, cloudy weather obstructed the usual ways oxygen is infused into ocean water. The fish are thought to have been trapped in shallow, warm water where the oxygen supply diminished.

Experts suggest that climate change could be contributing to such incidents as warmer waters become more common. Katie St. Clair, the sea life facility manager at Texas A&M University at Galveston, said that rising water temperatures could lead to more such events, especially in shallow, near-shore environments.

Frazier noted that these fish kills are not uncommon during warmer periods and predicted local water conditions would improve as ocean waves reintroduce oxygen and fish leave low-oxygen areas. However, the United Nations reported in 2019 that warmer ocean waters have increased incidences of hypoxia (low oxygen levels), posing threats to fish populations.

The fish kill could significantly impact the environment as the dead fish, primarily Gulf menhaden, play a crucial role in the local ecosystem. Clean-up operations are ongoing to prevent the dead fish from rotting in the midday heat.

Are gas stoves bad for your health? Here’s why the federal government is considering new safety regulations

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Gas stove. Photo by Andrea Piacquadio.
Gas stove. Photo by Andrea Piacquadio.

By Jonathan Levy, The Conversation

Cooks love their gadgets, from countertop slow cookers to instant-read thermometers. Now, there’s increasing interest in magnetic induction cooktops – surfaces that cook much faster than conventional stoves, without igniting a flame or heating an electric coil.

Some of this attention is overdue: Induction has long been popular in Europe and Asia, and it is more energy-efficient than standard stoves. But recent studies have also raised concerns about indoor air emissions from gas stoves.

Academic researchers and agencies such as the California Air Resources Board have reported that gas stoves can release hazardous air pollutants while they’re operating, and even when they’re turned off. A 2022 study by U.S. and Australian researchers estimates that nearly 13% of current childhood asthma cases in the U.S. are attributable to gas stove use.

Dozens of U.S. cities have adopted or are considering regulations that bar natural gas hookups in new-construction homes after specified dates to speed a transition away from fossil fuels. At the same time, at least 20 states have adopted laws or regulations that prohibit bans on natural gas.

On Jan. 9, 2023, the U.S. Consumer Product Safety Commission announced that it will consider measures to regulate hazardous emissions from gas stoves. The agency has not proposed specific steps yet, and said that any regulation will “involve a lengthy process.” On Jan. 11, CPSC Chair Alexander Hoehn-Saric further clarified that the agency was looking for ways to reduce indoor air quality hazards, but did not plan to ban gas stoves.

As an environmental health researcher who does work on housing and indoor air, I have participated in studies that measured air pollution in homes and built models to predict how indoor sources would contribute to air pollution in different home types. Here is some perspective on how gas stoves can contribute to indoor air pollution, and whether you should consider shifting away from gas.

Natural gas has long been marketed as a clean fuel, but research on its health and environmental effects is calling that idea into question.

Respiratory effects

One of the main air pollutants commonly associated with using gas stoves is nitrogen dioxide, or NO₂, which is a byproduct of fuel combustion. Nitrogen dioxide exposures in homes have been associated with more severe asthma and increased use of rescue inhalers in children. This gas can also affect asthmatic adults, and it contributes to both the development and exacerbation of chronic obstructive pulmonary disease.

Nitrogen dioxide in homes comes both from outdoor air that infiltrates indoors and from indoor sources. Road traffic is the most significant outdoor source; unsurprisingly, levels are higher close to major roadways. Gas stoves often are the most substantial indoor source, with a greater contribution from large burners that run longer.

The gas industry’s position is that gas stoves are a minor source of indoor air pollutants. This is true in some homes, especially with respect to exposures averaged over months or years.

But there are many homes in which gas stoves contribute more to indoor nitrogen dioxide levels than pollution from outdoor sources does, especially for short-term “peak” exposures during cooking time. For example, a study in Southern California showed that around half of homes exceeded a health standard based on the highest hour of nitrogen dioxide concentrations, almost entirely because of indoor emissions.

How can one gas stove contribute more to your exposure than an entire highway full of vehicles? The answer is that outdoor pollution disperses over a large area, while indoor pollution concentrates in a small space.

Ventilation is an essential tool for improving indoor air quality in homes.

How much indoor pollution you get from a gas stove is affected by the structure of your home, which means that indoor environmental exposures to NO₂ are higher for some people than for others. People who live in larger homes, have working range hoods that vent to the outdoors and have well-ventilated homes in general will be less exposed than those in smaller homes with poorer ventilation.

But even larger homes can be affected by gas stove usage, especially since the air in the kitchen does not immediately mix with cleaner air elsewhere in the home. Using a range hood when cooking, or other ventilation strategies such as opening kitchen windows, can bring down concentrations dramatically.

Methane and hazardous air pollutants

Nitrogen dioxide is not the only pollutant of concern from gas stoves. Some pollution with potential impacts on human health and Earth’s climate occurs when stoves aren’t even running.

A 2022 study estimated that U.S. gas stoves not in use emit methane – a colorless, odorless gas that is the main component of natural gas – at a level that traps as much heat in the atmosphere as about 400,000 cars.

Some of these leaks can go undetected. Although gas distributors add an odorant to natural gas to ensure that people will smell leaks before there is an explosion risk, the smell may not be strong enough for residents to notice small leaks.

Some people also have a much stronger sense of smell than others. In particular, those who have lost their sense of smell – whether from COVID-19 or other causes – may not smell even large leaks. One recent study found that 5% of homes had leaks that owners had not detected that were large enough to require repair.

This same study showed that leaking natural gas contained multiple hazardous air pollutants, including benzene, a cancer-causing agent. While measured concentrations of benzene did not reach health thresholds of concern, the presence of these hazardous air pollutants could be problematic in homes with substantial leaks and poor ventilation.

Methane leaks from natural gas at all stages of production and use. UC Santa Barbara, CC BY-ND
Methane leaks from natural gas at all stages of production and use. UC Santa Barbara, CC BY-ND

Reasons to switch: Health and climate

So, if you live in a home with a gas stove, what should you do and when should you worry? First, do what you can to improve ventilation, such as running a range hood that vents to the outdoors and opening kitchen windows while cooking. This will help, but it won’t eliminate exposures, especially for household members who are in the kitchen while cooking takes place.

If you live in a smaller home or one with a smaller closed kitchen, and if someone in your home has a respiratory disease like asthma or chronic obstructive pulmonary disease, exposures may still be concerning even with good ventilation. Swapping out a gas stove for one that uses magnetic induction would eliminate this exposure while also providing climate benefits.

There are multiple incentive programs to support gas stove changeovers, given their importance for slowing climate change. For example, the recently signed Inflation Reduction Act of 2022, which includes many provisions to address climate change, offers rebates for the purchase of high-efficiency electric appliances such as stoves.

Moving away from gas stoves is especially important if you are investing in home energy efficiency measures, whether you are doing it to take advantage of incentives, reduce energy costs or shrink your carbon footprint. Some weatherization steps can reduce air leakage to the outdoors, which in turn can increase indoor air pollution concentrations if residents don’t also improve kitchen ventilation.

In my view, even if you’re not driven to reduce your carbon footprint – or you’re just seeking ways to cook pasta faster – the opportunity to have cleaner air inside your home may be a strong motivator to make the switch.

This article has been updated to reflect the Jan. 11, 2023 statement from the Consumer Product Safety Commission that the agency has no plans to ban gas stoves.