Increasing evidence suggests that plastic is making us gain weight. A common ingredient in plastic, Bisphenol A (BPA), is the suspected culprit…it disrupts the normal actions of our hormones leading to a hormone imbalance that can cause an increase in body weight.
BPA has been identified as an “obesogen”… a chemical that can inappropriately change stability of fat metabolism (or fat homeostasis) and fat storage, change setpoints of metabolism, disrupt energy balance or change the regulation of appetite and feeling of satiety (or fullness) to promote fat accumulation and obesity.
A study in 2012 found that children and teenagers who had higher levels of BPA in their urine were more likely to be overweight. Similar results were found in studies of adults. Data from the American Centers for Disease Control (CDC) show that 92.6% of people age 6 and over have detectable levels of BPA in their urine.
Worries about BPA toxicity have led to BPA-free products being produced, using BPS and BPF instead. But are these products safer?
They may not be. A new study, published in the Journal of the Endocrine Society in July 2019, suggests that all of the biphenols are linked with obesity and weight gain. Although diet and exercise are still considered the main factors in controlling weight, these chemicals may also be a factor.
Researchers point out that an association between bisphenols and obesity doesn’t necessarily prove they cause weight gain. They say more research is needed. However, this is just another reason to avoid use of plastic, and especially to ensure that it doesn’t come in contact with our food and drinks. Transfer of chemicals from plastic to food is more likely to occur when the food is hot or contains fats or oils, since these hormone-disrupting chemicals tend to dissolve in fats and oils, just like our own hormones do.
So,whenever possible, choose foods that are sold in paper, cloth or metal containers or, better yet, are sold in bulk with no packaging. Aim to buy drinks that are packaged in glass bottles. If you must use plastic items, the American Academy of Pediatrics recommends washing them by hand as dishwashers can break down plastic more quickly, increasing the chance of chemicals leaking in future use. Don't reuse plastic containers, like yogurt containers, that are designed for single use. Never microwave food in any plastic container that is not labelled "microwave safe". Plastics labelled with 3, 6 or 7 in a triangle contain chemicals that should not come in contact with food (phthalates, styrene and bisphenols).
Avoiding plastic containers helps to reduce plastic waste and protect the environment. But, at the same time, you may also be improving your health and your waistline!
Interested in learning more about hormone disruptors? Check out my recently published book:
"Can I Speak to the Hormone Lady? Managing Menopause and Hormone Imbalances". As well as discussing menopause problems, I also talk about what hormones do in the body and how chemicals in the environment can interfere with your hormones.
References:
Definition of “obesogen” (Wikipedia)
Microwaving Food in Plastic: Dangerous or Not? Harvard Health
Can I Speak to the Hormone Lady? E-Book: Universal Book Link to several book services or Print: Amazon Canada Amazon US
