Every day, billions of plastic bags go from store counters into homes, drains, and the ocean, and not many people take a moment to think about what happens after that. The impact of plastic bags goes way beyond the short time they’re used. They affect human health, animals, marine life, and the environment as a whole. Here’s how, and what compostable alternatives can do to make a difference.
Effects of Plastic Bags on Human Health
Plastic bags are usually made from polyethylene and may include chemicals like BPA and phthalates. These substances can seep into food when the bag is heated, reused, or holds oily items. Being exposed to them repeatedly can mess with hormones, and high levels of BPA have been linked to diabetes, stress on the liver, and problems with reproduction. Kids and pregnant women are more at risk, and exposure before birth has been connected to breathing issues in children.
Burning plastic bags, which still happens in places where proper waste collection isn’t available, releases harmful toxins like dioxins and furans. These can irritate the lungs and increase the chance of cancer over time. When plastic bags get wet and sit in drains, they can become breeding grounds for mosquitoes, which spread diseases like dengue and malaria. This means that plastic bag waste is not just bad for the environment but also a serious public health concern.
Instead of breaking down, plastic bags turn into microplastics that get into our food, water, and even our bodies. These microplastics are now found in human blood, lungs, and even brain tissue. People who use a lot of bottled water are exposed to more of these harmful particles, which is why more people are moving to reusable, non-plastic water bottles. One of the easiest ways to reduce this problem is by choosing compostable carry bags.
Effects of Plastic Bags on Animals
In many Indian cities, stray cows go through trash looking for food. They can’t tell the difference between the food and the plastic bags it’s wrapped in, so they eat both. In one case, 52 kilograms of plastic bags were taken out of a single cow’s stomach during surgery. Since plastic doesn’t break down in the digestive system, it sticks together and hardens into a big lump that completely blocks the stomach.
This blockage makes the animal feel full even when it’s hungry, so it stops eating. As a result, the animal slowly starves to death from malnutrition. After death, examinations of these cows show signs like swollen stomachs, sores, and a weakened stomach lining. Dogs, goats, and other animals that scavenge also face the same dangers in areas where plastic bags are widely used.
This is a harm that can be easily avoided, as it begins with how we dispose of waste. Small changes, like using compostable pet waste bags instead of regular plastic bags, make a big difference. Switching to certified compostable carry bags ensures that any waste an animal eats can safely break down in the environment, rather than staying stuck in the stomach. Local programs that replace regular bags with compostable ones at the source can greatly reduce this risk.
Effects of Plastic Bags on Marine Life
Once plastic bags get to the coast, they float into the ocean where sea turtles often confuse them with jellyfish, which they like to eat. About half of all sea turtles around the world have eaten plastic trash, and studies show that once a turtle swallows about 14 pieces, there’s a 50% chance it won’t survive. This problem isn’t just for turtles whales and seabirds also get confused. In one case, scientists found a whale with 40 kilograms of plastic bags in its stomach.
When animals eat plastic bags, they feel full even though they’re not getting real food, so they stop eating and eventually starve even though their stomachs are full. Another big danger is getting stuck in plastic. Turtles, seals, and seabirds can get tangled, which hurts them or even kills them. Scientists think at least 800 different marine species are affected by plastic waste.
Plastic bags don’t break down completely in the ocean, so they stay there for decades. Over time, they break into smaller pieces that other animals like fish and shellfish eat. The harm keeps spreading as these animals get eaten by bigger ones. To stop this, one solution is to reduce how many plastic bags end up in waterways by using compostable alternatives instead.
Effects of Plastic Bags on the Environment
Plastic bags can take decades, or even hundreds of years, to break down, and even when they do, they don’t completely go away. Instead, they turn into tiny pieces called microplastics that stay in the soil and water forever. In India, millions of tones of plastic waste are produced each year, and a lot of it ends up scattered around instead of being properly collected. This waste harms the land and water systems it ends up in.
In cities, discarded plastic bags are a major cause of blocked stormwater drains, which leads to serious flooding in places like Mumbai, Chennai, and Bengaluru during the monsoon season. When plastic bags are thrown away in landfills, they slowly release harmful chemicals into the soil and groundwater as they break down. These chemicals can pollute farmland and even drinking water. This is why the biggest problem with single-use plastic goes beyond just looking messy.
Some farmers say that when plastic fragments mix into the soil, it makes the soil less able to hold water, which quietly reduces crop yields over time. If this isn’t managed, it creates a costly cycle that a compostable alternative could prevent. That’s why India’s Plastic Waste Management Rules now require carry bags to have a minimum thickness and be traceable for every one sold in the country.
Effects of Plastic on the Planet, and What's Changing
When viewed from a broader perspective, this is just one part of a much bigger issue affecting the planet: global plastic production has more than doubled since 2000 and isn’t showing any signs of slowing down.Most of this plastic comes from fossil fuels, so making and burning it both add to the amount of harmful gases in the atmosphere. The Growing Problem of Single-Use Plastic Waste blog explains this larger problem in detail.
India has taken some of the strongest steps in the world when it comes to regulating plastic. They have set a minimum thickness of 120 microns for carry bags, introduced a phased approach to Extended Producer Responsibility, and added QR codes for tracking packaging. These rules are in place because the harm caused by plastic is well known and very urgent. Now, anyone making or selling carry bags in India must follow these rules.
Compostable materials that meet standards like IS 17088 offer the same convenience of plastic without its long-lasting damage. Instead of staying in the environment for decades, these materials break down into harmless compost. Switching to these materials helps reduce the impact on all the problems discussed. For a more detailed look at why this change is needed, read why we need biodegradable packaging.
Conclusion
Plastic bags can cause noticeable harm to people, animals, marine creatures, and the environment, and the longer they remain in use, the more damage they do. Compostable options tackle the real problem instead of just dealing with the effects later. If you’re looking to switch your business or home away from plastic bags, check out SAKRT’s full range of compostable products and choose a certified, IS 17088-approved alternative.
FAQs
What are the main effects of plastic bags on human health?
Plastic bags can leach chemicals like BPA and phthalates into food, release toxic fumes when burned, and break down into microplastics that have been found in human tissue. Together, these create both immediate and long-term health risks.
How do plastic bags affect animals in India specifically?
Stray cattle and other scavenging animals often eat food scraps still tied in plastic bags, which then accumulate in the stomach and cause slow starvation. Veterinary cases have documented tens of kilograms of plastic removed from a single animal.
Why are plastic bags especially dangerous for marine life?
Sea turtles and other marine animals mistake floating plastic bags for jellyfish, and ingestion creates a false sense of fullness that leads to starvation. Entanglement in bags and debris also causes drowning and injury across many species.
How long do plastic bags take to break down in the environment?
Plastic bags can take anywhere from a few decades to several hundred years to fully break down, and even then they persist as microplastic fragments rather than disappearing completely.
What is India doing to reduce the effects of plastic bags?
India’s Plastic Waste Management Rules now ban carry bags thinner than 120 microns, enforce Extended Producer Responsibility, and require QR-code traceability on plastic packaging, alongside growing adoption of IS 17088-certified compostable alternatives.
