Plastic bottles are everywhere. Whether it’s your favorite soft drink, bottled water, or a convenient iced coffee, plastic containers have become an everyday norm. However, what if these bottles are more than a convenient way to carry your beverage? What if they silently leach toxic heavy metals into your drinks? One such metal, antimony, has been identified as a serious health hazard, yet it often goes unnoticed by the general public. In this post, we’ll look closely at antimony, how it ends up in your drinks, and what you can do to minimize exposure.

What Is Antimony and Why Is It Dangerous?

Antimony is a heavy metal commonly used to manufacture polyethylene terephthalate (PET), used to produce most plastic beverage bottles. PET plastic is chosen for its strength, lightweight nature, and recyclability, making it a preferred choice for beverage manufacturers. However, the antimony used as a catalyst in the production of PET plastic doesn’t stay locked in the material—it can leach out into the liquids stored inside.

When antimony enters the human body through ingestion or exposure, it can have a range of toxic effects. This metal has been linked to severe health conditions, including damage to the heart, liver, and kidneys. Chronic exposure has also been associated with respiratory issues and, in extreme cases, may increase the risk of cancer.^[1]

How Antimony Ends Up in Your Drinks

Antimony leaching from PET bottles into beverages depends on several factors, including temperature, storage conditions, and the time the beverage is stored. Studies have shown that higher temperatures significantly increase the rate at which antimony migrates into the liquid.^[2]

Imagine leaving a plastic water bottle in your car on a hot summer day. The heat warms the water and accelerates the release of antimony from the plastic into the beverage. In extreme cases, antimony levels in these bottles have exceeded the safety limits established by the Environmental Protection Agency (EPA). Even under normal storage conditions, prolonged shelf life can result in measurable levels of antimony in the drink.^[3]

The Health Risks of Antimony Exposure

The health risks associated with antimony exposure are well-documented. Acute exposure can cause symptoms like nausea, vomiting, and diarrhea, while chronic exposure has more severe implications. The kidneys, liver, and heart are particularly vulnerable to damage, as these organs work to filter and process toxins in the body. Over time, the accumulation of antimony can lead to organ dysfunction and systemic health issues.

Emerging research also suggests that antimony exposure may play a role in the development of certain cancers, although more studies are needed to confirm these findings. What’s clear, however, is that minimizing exposure to this heavy metal is essential for maintaining long-term health.

Why PET Plastic Is Still Widely Used

Despite the known risks, PET plastic remains dominant in the beverage industry. Its lightweight nature reduces shipping costs, its durability prevents breakage, and its recyclability makes it an attractive choice from an environmental perspective. However, these benefits often overshadow the potential health risks associated with antimony leaching.

Moreover, regulations regarding antimony levels in plastic bottles vary widely across countries, and enforcement can be inconsistent. While manufacturers often comply with existing safety standards, these standards may not account for the cumulative effects of chronic low-level exposure to antimony over time.

How to Reduce Your Exposure to Antimony

Reducing your exposure to antimony doesn’t have to mean giving up bottled beverages altogether, but it does require some thoughtful adjustments to your habits. Here are some practical steps you can take to minimize your risk:

Switch to Glass Bottles: Glass is a non-reactive material, meaning it doesn’t leach harmful chemicals or heavy metals into its contents. Opt for beverages packaged in glass bottles whenever possible, especially for water and other drinks you consume regularly.

Use Stainless Steel or Glass Reusable Bottles: Invest in high-quality reusable bottles of stainless steel or glass. Fill them with beverages from home, especially if you use a high-quality water filtration system.

Invest in a Reverse Osmosis (RO) System: Reverse osmosis systems effectively remove heavy metals and contaminants from tap water. Consider installing an RO system under your sink or using a countertop model to ensure your water is free from harmful substances.^[4]

Avoid Heat Exposure: Never leave plastic bottles in hot environments, such as inside a car or in direct sunlight. Heat accelerates the leaching process, increasing the likelihood of antimony contamination.

Check Storage Conditions: When purchasing bottled beverages, pay attention to where and how they’ve been stored. Avoid bottles that appear to have been exposed to heat or sunlight for extended periods.

Limit Consumption of Beverages in Plastic Bottles: While avoiding plastic bottles entirely may not be practical, reducing your overall consumption can significantly lower your exposure to antimony and other harmful substances.

Weighing the Cost of Healthier Options

Switching to safer alternatives like glass bottles or reverse osmosis systems often comes with a higher upfront cost. However, the long-term benefits to your health far outweigh the financial investment. Consider this: the expense of treating chronic health conditions caused by toxic exposure can be far greater than the cost of making proactive changes to your daily habits.

By prioritizing your health and making conscious choices about the materials you allow into your life, you’re not just protecting yourself—you’re also setting an example for others to do the same.

The Bottom Line

Plastic bottles made from PET may be convenient, but their hidden risks are hard to ignore. Antimony, a toxic heavy metal used in the production of these bottles, can leach into your drinks under certain conditions, potentially causing serious health problems over time. From organ damage to increased cancer risk, the dangers of chronic exposure to antimony make it a threat worth addressing.

Switching to safer alternatives like glass or stainless steel bottles and using filtered water can significantly reduce exposure to this harmful substance. While these changes may require extra effort and expense, the payoff is well worth it for your health and peace of mind. Remember, small steps toward reducing toxic exposure can lead to big improvements in overall well-being.

References:

1. Martin, Rachel, and Vincent R. Lee. “Antimony Toxicity.” StatPearls, StatPearls Publishing, 2025.
2. Carneado, Sergio, et al. “Antimony in Polyethylene Terephthalate-Bottled Beverages: The Migration Puzzle.” Molecules, vol. 28, no. 20, Oct. 2023, p. 7166.
3. Antimony.Compounds.https://www.epa.gov/sites/default/files/2016-09/documents/antimony-compounds.pdf
4. US EPA, OW. Point-of-Use Reverse Osmosis Systems. 7 Jan. 2022, https://www.epa.gov/watersense/point-use-reverse-osmosis-systems.