The impact of drugs on marine ecosystems is a growing concern as various substances, including meth, cocaine, anti-anxiety medications, and antipsychotics, find their way into our waterways. These drugs can enter the environment through different pathways, such as sewage treatment plants, agricultural runoff, and illegal dumping, among others. Once in the water, they can have detrimental effects on marine life, particularly fish, and ultimately pose a risk to human health through the food chain.
One of the major concerns regarding drug contamination in marine ecosystems is the potential impact on fish populations. Research has shown that exposure to drugs can lead to various physiological and behavioral changes in fish, including alterations in their sex organs. For example, a study published in the journal Environmental Science & Technology found that exposure to antidepressants in fish led to changes in their reproductive organs, resulting in skewed male-to-female ratios and altered behavior patterns.
These changes in fish populations can have cascading effects on the entire ecosystem. For instance, disruptions in fish reproduction can lead to declines in fish populations, which can in turn affect predators that rely on fish as a food source. Additionally, the presence of drugs in fish can pose a risk to human health, as these substances can bioaccumulate in the tissues of fish and eventually be consumed by humans.
https://www.businessinsider.com/where-fish-have-pfas-forever-chemicals-map-us-lakes-streams-2023-1
https://phys.org/news/2023-01-wild-fish-month-tainted.html
by Daniel Lawler
Locally caught fish in rivers and lakes could be a major source of exposure to "forever chemicals" PFAS, new research has warned.
In one real-life example, researchers in Sweden found that fish exposed to high levels of anti-anxiety medications had reduced levels of cortisol, a hormone that helps regulate stress response. This can have negative implications for the overall health and survival of fish populations, as they may become more vulnerable to environmental stressors and predators.
The popularity of fishing and foraging for fish in streams, rivers, and lakes continues to grow, it is important to be aware of the potential health risks associated with consuming fish from these freshwater sources. While fish can be a nutritious and delicious addition to a balanced diet, they can also be susceptible to contamination from various pollutants that can pose a threat to human health.
One of most common contaminants found in freshwater fish is mercury. Mercury is a toxic heavy metal that can accumulate in the tissues of fish over time. When humans consume fish contaminated with mercury, it can have harmful effects on the nervous system, leading to neurological disorders and developmental delays in children. Pregnant women and young children are especially vulnerable to the effects of mercury exposure, as it can impact the development of the brain and nervous system in fetuses and young children.
In addition to mercury, fish in freshwater sources can also be contaminated with microplastics. Microplastics are small plastic particles that can be ingested by fish and other aquatic organisms. When humans consume fish containing microplastics, there is a risk of ingesting these particles as well. While the health effects of consuming microplastics are not yet fully understood, studies have shown that they can have negative impacts on the digestive system and may also leach harmful chemicals into the body.
The long-term consequences of consuming freshwater fish contaminated with PFAS are still being studied, but research suggests that chronic exposure to these chemicals may have serious implications for human health. For example, a study conducted in Michigan found that individuals who regularly consumed PFAS-contaminated fish had significantly higher levels of these chemicals in their blood than those who did not consume fish from contaminated waters. This highlights the potential for PFAS to accumulate in the human body over time and pose a persistent health risk. You can find a map of PFAS contaminated sites at https://www.epa.gov/system/files/documents/2023-02/Andrews-Locally-Caught-Freshwater.pdf
Few rivers, streams and lakes are considered safe to eat fish from. There are some still considered safe.
. Lake Tahoe, California/Nevada
- Lake Tahoe is known for its clear, pristine waters and is considered safe for fishing and consumption of fish. The lake has strict regulations in place to protect water quality and minimize levels. Fish species found in Lake Tahoe include rainbow trout, brown trout, and minaw (lake) trout.
2. Yellowstone River, Montana
- The Yellowstone River is a popular fishing destination known for its healthy fish populations and clean water quality. The river is closely monitored by state agencies to ensure it remains safe for fishing. Fish species in the Yellowstone River include cutthroat trout, brown trout, and rainbow trout.
3. Lake Michigan, Illinois/Michigan/Wisconsin/Indiana
- Lake Michigan is one of the largest freshwater lakes in the US and is generally considered safe for fishing and consumption of fish. The lake is monitored by various government agencies to assess water quality and pollution levels. Fish species in Lake Michigan include salmon, trout, and walleye.
4. Kenai River, Alaska
- The Kenai River is renowned for its salmon fishing and is considered safe for fishing and consumption of fish. The river is carefully managed by the Alaska Department of Fish and Game to ensure sustainable fishing practices. Fish species in the Kenai River include king salmon, silver salmon, and rainbow trout.
5. Boundary Waters Canoe Area Wilderness, Minnesota
- The Boundary Waters is a designated wilderness area with numerous lakes and rivers that are safe for fishing and consumption of fish. The area is protected from development and pollution, making it an ideal location for sustainable fishing. Fish species in the Boundary Waters include walleye, northern pike, and smallmouth bass.
6. Green River, Utah
- The Green River is a popular fly fishing destination known for its healthy fish populations and clear waters. The river is closely monitored by the Utah Department of Environmental Quality to ensure water quality standards are met. Fish species in the Green River include brown trout, rainbow trout, and cutthroat trout.
7. Lake Superior, Minnesota/Wisconsin/Michigan
- Lake Superior is the largest of the Great Lakes and is generally considered safe for fishing and consumption of fish. The lake has lower pollution levels compared to other Great Lakes, making it a preferred destination for anglers. Fish species in Lake Superior include lake trout, whitefish, and salmon.
8. Allegheny River, Pennsylvania/New York
- The Allegheny River is a popular fishing destination in the Northeast known for its diverse fish populations and scenic beauty. The river is monitored by state agencies to ensure water quality standards are met. Fish species in the Allegheny River include smallmouth bass, walleye, and muskellunge.
It is important for anglers to prioritize safety and sustainability when selecting bodies of water for fishing activities. By following regulations, practicing catch-and-release, and avoiding overfishing, individuals can help protect the environment and preserve fish populations for future generations. Be sure to check with local authorities and government agencies for the most up-to-date information on water quality and fishing regulations in your area.
Some tips for safe consumption practices include:
1. Avoid eating fish species that are known to accumulate higher levels of contaminants, such as predatory fish like bass, pike, and walleye.
2. Be aware of pollution levels in the area where you are fishing or foraging for fish. Avoid consuming fish from streams, rivers, or lakes with high levels of pollution.
3. Consider alternative sources for obtaining healthy fish, such as purchasing fish from reputable sources that test for contaminants and adhere to strict quality standards.
4. When fishing or foraging for fish, follow local guidelines for fish consumption advisories and limits to ensure that you are not exceeding recommended levels of contaminants.
By being informed and taking precautions when consuming fish from streams, rivers, and lakes, you can still enjoy the benefits of incorporating fish into your diet while minimizing the potential health risks associated with contamination. Stay vigilant, make informed choices, and prioritize your health when it comes to selecting and consuming fish from freshwater sources.
I am the author of “How the Food Industry is Killing Us” at https://books2read.com/u/bodoJV or free at your library. Our Health site https://www.Edens-Acre.com
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