BPA and Its 'Family'

What is BPA?

Bisphenol A, better known as BPA, is a chemical substance that has been used for decades in the production of various types of plastics and resins. These substances are found in a multitude of products, from water bottles and food packaging to cash register receipts and even some dental sealants. The use of BPA became so commonplace that it was nearly impossible to avoid it.

However, in the 1990s, scientists and health professionals began to warn about the potential health risks of BPA. Research showed that BPA could 'leak' from packaging and products into our food and drinking water. And this is problematic because BPA is an endocrine disruptor – a substance that can disrupt our hormone system and contribute to various health problems, including reproductive disorders, heart diseases, and possibly even cancer.

The Substitutes: BPS and BPF 

In response to concerns about BPA, manufacturers developed alternatives such as bisphenol S (BPS) and bisphenol F (BPF). These substances are structurally similar to BPA and were thus used in products labeled as 'BPA-free'. The idea was simple: if BPA is the problem, use something else. But as we are now beginning to understand, the story is not so straightforward.

A Dive into Science 

Let's get technical, but don't worry, I'll try to keep it as understandable as possible. A recent study, published on the reliable scientific website PubMed (which is the digital library of The National Institutes of Health), has shed light on how BPA and its alternatives can affect our health. The study used a model organism, the tiny worm C. elegans, and mammalian cell cultures to analyze the toxicity of these substances.

What the Study Reveals

The scientists worked with a small worm called C. elegans, which surprisingly shares many biological processes with humans, and with mammalian cells in a laboratory. They wanted to understand how BPA and the alternative bisphenols affect our body cells.

The worms exposed to 1 millimol (a scientific unit of measure that indicates concentration) of BPA experienced several problems. They grew slower, didn't get as big, reproduced less, and their tissue appeared abnormal. When the worms were exposed to the same amount of the substitute substances, including TMBPF (which is seen as a safer replacement for BPA), they had at least three of these problems. Moreover, the worms exposed to all bisphenols (except BPS) lived shorter and had more age-related problems, particularly in the nerves.

They specifically looked at mitochondria and discovered that after exposure to these chemicals, the mitochondria were less effective. When we talk about mitochondria, we're essentially discussing small components in our cells that produce energy. You can think of them as the batteries of the cell. In a healthy situation, mitochondria use oxygen to create energy. The researchers found that after exposure to BPA and BPF, these mitochondria were less effective. They used less oxygen and therefore produced less energy than usual.

It may seem contradictory that after treatment with all bisphenols, including BPA and BPF, more ATP was found in the cells – ATP is the molecule that carries energy within the cells and is an indication of energy production. However, this could be a kind of stress reaction from the cells, trying to create more energy to compensate for the damage caused by the bisphenols.

This effect on energy production negatively impacted the cells. More bisphenols led to a decrease in cell viability. This means that when the cells were exposed to higher concentrations of bisphenols, more cells died.

So it's not that the bisphenols gave the cells more energy in a positive sense; rather, they caused a disrupted energy household that was ultimately harmful to the cells. This is an important detail because it shows that although more energy seemed to be present, the overall health of the cells deteriorated.

This suggests that 'BPA-free' does not automatically mean 'safe'. TMBPF, a substance touted as a safe alternative, was even the only one that caused worrying increases in harmful oxygen particles and openings in the mitochondria.

What Does This Mean for You? 

This research underscores an important point: when it comes to chemicals, replacement is not always improvement. It is essential to remain critical about the materials we use daily, even if they appear safe at first glance. As consumers, we need to stay informed and sometimes look beyond marketing to understand what's really in our products.

Smart Steps Towards a Healthier Future

Now that you've opened your eyes to what lies behind the scenes of 'BPA-free' labels, you might be wondering: "Do I need to replace everything plastic in my house?" Don't panic. It's not necessary to do a major cleanup and throw away all your plastic stuff. A thoughtful approach is key here.

Start, for example, with the items you use the most and that come into direct contact with your food and drink. A simple first step is to replace plastic storage containers with glass jars or dishes. Glass is not only free from bisphenols, but it's also durable and recyclable, making it a friendly choice for your health.

And what about your trusty drinking bottle? It goes everywhere with you, so this is an excellent candidate for a healthy upgrade. Consider a glass bottle – your drinks taste better, and you reduce your exposure to unwanted chemicals.

By consciously choosing healthier alternatives, you are taking positive steps towards a better future, not just for yourself but also for future generations. And remember: change doesn't have to happen all at once. It's a gradual journey towards a healthier life, and every small adjustment counts.

With love, Sabine