So What Are BPA’s?

The Impact of BPA’s (Bisphenol A) on Human Health.

You may well have noticed that many plastic products and canned foods you now buy are proudly promoting the fact that they are BPA free. So is this something that you should be paying attention to?

What is BPA and why should we be avoiding it?

BPA or Bisphenol A is a synthetic oestrogen that is found in the epoxy coating of food cans as well as being a component of many plastics. In addition to this BPA is commonly employed as a colour developer in thermal papers. Consequently, BPA derived from thermal papers has been considered an important source of exposure for humans, since this chemical may migrate from paper to skin upon contact. (2)

BPA is found in polycarbonate plastics and epoxy resins.

Polycarbonate plastics are often used in containers that store food and drinks, water bottles being one. (1)

Epoxy resins are used to coat the inside of metal products, such as food cans, bottle tops and water supply lines.

Some dental sealants and composites also may contain BPA. (1)

There is a large body of information about the hazards of BPA to be found, and whilst there are still assurances of its safety from the FDA, it is safe to say that BPA’s are worth avoiding. They are unquestionably endocrine and metabolic disruptor’s in so far as they imitate other hormones, interfere with hormone signalling, tell cells to die prematurely, increase production of certain hormones and decrease production of others, and complete with essential nutrients.

Some useful tips to avoiding BPA’s

BPA free

  • Choose glass over plastic where ever possible
  • Avoid handling shopping receipts (thermal papers) as they are coated with BPA
  • Note companies whose packaging is registered as BPA free. (
  • Carefully research any dental sealants and composites before agreeing to procedures.


Edwina Murphy

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