What plastic recycling codes do and do not tell you

Maybe you have seen a chart ranking plastics by the number inside the recycling triangle. This page looks at what those codes mean and what FDA actually says about one of them.

Lists circulate online that rank plastic recycling numbers from safest to most dangerous. They look official, because the numbers are real and printed right on things you own.

But those numbers were never built as a health scale. A resin code exists so recycling plants can sort materials by what they are made of. Giving these codes a health meaning is something people did later. It is not what the codes were built for.

In its consumer guide on bisphenol A (BPA), the FDA notes one useful fact: a resin code of 7 on plastic containers means BPA may be present.

That is real, useful information. Notice how narrow it is, though. It says a code may point to one chemical. It does not rank the other codes. It does not call code 7 dangerous either.

FDA describes BPA as a chemical part of polycarbonate plastic. Makers use it in certain drink containers and in many food and drink can liners. Inside a can liner, it does a job: it stops corrosion, and it keeps metal from getting into the food.

On safety, FDA states its view plainly on this page. Current approved uses of BPA in food containers and packaging are safe. FDA also admits the exposure exists. People take in low levels of BPA, because tiny amounts can move from packaging into food or drink.

Small amounts do move from packaging into food. FDA's judgment is that the approved uses stay safe at those levels.

You may find that reassuring, or you may not. Either way, it is what the agency in charge actually says. That beats a color-coded chart of unknown origin.

This FDA page does not discuss cancer at all. It only answers whether approved uses of BPA in food packaging are safe.

That matters for how you read online claims linking recycling numbers to cancer. Those claims are not coming from this source, because this source never says that.

Worry about plastics makes sense. Packaging is everywhere. It is made in factories, and most people have no idea what is inside it. That mix breeds worry easily.

Try asking three questions about any claim you see. What exact substance are we talking about? What does the agency in charge actually say? And what real action would follow?

Apply those questions to recycling codes, and most claims fall apart fast. FDA has no ranked safety list. It has one narrow fact about code 7 and BPA, plus one overall safety judgment about approved uses.

If cancer risk is really behind the worry, the biggest and best-proven factors are not sitting in your recycling bin. Tobacco, alcohol, sun exposure, body weight, and keeping up with screening for your age all carry far more evidence than anything printed on a plastic container.

That is not an argument to ignore packaging. It is an argument for balance. Do not let a slick graphic about triangle numbers eat up worry that would help more elsewhere.

Some people, after reading all this, still want to act. That urge makes sense, and there are low-cost options with no downside. Try storing food in glass or steel. Replace containers that are cracked or badly scratched. Follow any heating instructions printed on a container.

None of these are actual recommendations from the source cited here. They are simply choices that cost little and put your mind at ease — and that has value of its own.