Science

PFAS: Pretty Freaking Awful Stuff

Or, per- and polyfluoroalkyl substances - you can choose

Where can I find this stuff? And why?

The most well-known PFAS is probably Teflon. Yep, the OG nonstick coating. This is a perfluorinated chemical, and we all have heard how when it starts to peel off or chip from our pans it can be bad.

Perfluroalkyl substances (PFAS), sometimes called PFOA and PFOS, which are specific types of PFAS or PFCs which stands for per- and polyfluorinated chemicals, are used in a variety of different products (more than just pots and pans) because they are water and oil resistant. That makes them super useful for products that we don't want to get wet or stain. Think items like waterproof jackets, stain-resistant fabric on couches or carpets, water-repellent camping gear, and food packaging. The food packaging is a little less obvious, but not when you realize why. It can be super annoying if your cheesy pizza seeps oil through the paper take-out box. So, the manufacturers coat these products with PFAS to make them more durable.


So, any time you think about a raincoat, or a cardboard-looking take-out container that seems impervious to oil, or even stain-resistant fabric, think of your old, wonky, chipping nonstick pan.

Because PFAS is used in so many different products, there are lots of ways for the chemicals to spread throughout our environment. The three main ways are through manufacturing releases, runoff from fighting fires (more on this later), and as it escapes or chips off of PFAS-containing products. This means these chemicals are often found in our waterways and drinking water as well.

What can it do to me?

Many studies have been done investigating the effects of PFAS on humans. Most have found that they do not break down easily and can live in our bodies for long periods of time. Research has shown that PFAS can cause reproductive and developmental difficulties, liver and kidney problems, as well as increased cholesterol levels. Other worries include: an altered immune system, thyroid hormone disruption, cancer, and low infant birth weight, which is known to cause many other problems later in life for those children. Research in animal studies has also shown that animals exposed to PFOA and PFOS developed tumors.

What can I do about it?

Knowing where we often find these chemicals helps us know how to avoid them. The easiest way to avoid them is to not buy or bring products into our homes that are touted as being stain or water resistant or repellent. While these properties might seem magical, they all come with a cost. Sometimes, the costs are worth it, other times not so much. For example, stain resistant fabrics or "performance" fabrics. It's cool to not have to worry about spilling red wine on your white rug or if your kid goes wild with the markers on the couch, but is that enough to let these "forever chemicals" into your home? We suggest opting for couches and carpets that are not treated with stain resistant chemicals, and instead, going for darker or patterned fabrics and learning how to properly clean up spills that may leave stains. In general, wool is a good option for carpets, upholstery, and even clothing that is relatively water tight.

When looking for jackets, weigh the options. Do you really need waterproof? Probably not, unless you are going on a multi-hour hike through a torrential downpour on a regular basis or something really awesome like climbing a huge mountain. Instead, consider getting a jacket and using a wax product to treat it. (NikWax is safe and comes highly recommended for self-treating clothing.) Avoid things like Scotchguard, which are known to contain PFAS chemicals. Greenpeace has a pretty thorough document talking all about brands and outdoor gear that is PFC free.

Additionally, if you are worried about your drinking water, Dr. Joseph Braun, Assistant Professor in the Department of Epidemiology at the Brown University School of Public Health, recommends getting a water filter.

"I think the best thing you can do if you are concerned or if you live in a community that has [higher levels] is to use a filter, specifically a granular activated carbon filter. These are the water filters that you can purchase at any home improvement store or even your local drug store. Of course, when you buy a filter you have to maintain it, so it is one thing to have a filter sitting on your drinking water tap, but it means you actually have to use it. You have to turn it on when you are going to use it, and that you have to replace that cartridge as recommended," Dr. Braun suggests.

Another easy one, don't buy microwave popcorn. It is one of the biggest offenders of having PFAS in the packaging and transferring to food. Instead, learn how to easily make popcorn on the stovetop or even on your own in the microwave in about the same amount of time.

Anything else I should know?

One other application where PFAS has been really useful is in firefighting foam, especially around airplanes. Often if a fire were to occur at an airport it would be a fuel fire. According to Dr. Braun, "What you need to do [in these types of fires] is to get the oxygen out of there. What the aqueous film forming foams [PFAS including firefighting foams] are really great when you spray them on the surface of the oil that is on fire, they coat the oil and then block any oxygen from getting in there so the fire goes out." You can find out if your community is affected on this interactive map that EWG and the Social Science Environmental Health Research Institute at Northeastern created.

Sometimes the hardest part of cooking or meal prep can be figuring out what to make. It's hard to find a good balance between tasty and healthy. That's why we're sharing a tasty salad recipe that incorporates tips from our recent interview with Dr. Cynthia Li.

In our article titled 10 Science-Backed Ways to Detox With Cynthia Li, MD, Dr. Li mentions an important part of detoxing is to eat food your grandmother or great-grandmother would have recognized. Super processed food with a ton of hard-to-pronounce ingredients can have a detrimental effect on our health. There are certain foods that support detox more than others. This includes...

Foods that are good for detox such as omega-3 fatty acids, antioxidants, natural fiber, and herbs and spices

1. Foods rich in omega-3 fatty acids: wild salmon, walnuts & almonds, flax seeds freshly ground, avocado

2. Fruits and vegetables high in antioxidants: berries, kale, cabbage, tomatoes, citrus fruits, parsley, cilantro

3. Foods high in natural fiber: steel-cut oats, legumes, flaxseed meal, fruits & non-starchy vegetables

4. Herbs & spices: turmeric, fresh garlic, cumin, horseradish, ginger

It's easy to mix and match ingredients to create a ton of tasty dishes! The possibilities are endless. We created an awesome salad recipe using detox-approved ingredients. This salad is healthy, super tasty, and easy to make! You can also add protein and other seasonal fruit.

Kale, Chickpea, Avocado, and Citrus Salad

1 bunch kale, chopped into bite sized pieces

1/2 cup chickpeas (bonus points if cooked from dried beans or in a tetrapak or jar)

1 avocado, sliced

1 orange (or other citrus fruit) peeled and sliced

Creamy and Herby Walnut Dressing

1/3 cup walnuts

1 small garlic clove

1 Tbsp chopped parsley

3 Tbsp apple cider or white wine vinegar

1 Tbsp honey

1/3 cup olive oil

Salt and pepper

Instructions

Add walnuts, garlic, parsley, vinegar and honey to small food processor. Process until walnuts are in small chunks then start adding in olive oil

Massage kale with dressing then add toppings

Add dressing to taste

Enjoy!

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Food

10 Science-Backed Ways to Detox With Cynthia Li, MD

Yes, you can detox. No, you don't have to go on a juice cleanse or buy weird supplements.

"Detoxing" seems to be the buzzword of the moment, but there are often conflicting opinions that go along with it. Is detoxing a legitimate way to boost health or is it just another misguided claim? We asked Cynthia Li, MD, about her experience with detoxing. Dr. Li has a private practice in integrative and functional medicine, and serves as faculty for the Healer's Art program at the University of California San Francisco Medical School. Dr. Li is also the author of a new book, Brave New Medicine, that shares tells the story of her disabling autoimmune illness, the limitations of Western medicine, and her hard-won lessons on healing, which include detoxifying the house and our bodies.

BH: First of all, what does "detoxing" mean exactly?!

CL: When I use the term "detoxification," I'm not referring to high-end spas or extreme juicing fasts, many of which can strain your budget or harm your body. Detoxification is simply the body's innate capacity to filter and eliminate unwanted substances that would otherwise build up, generate "oxidative stress," and contribute to chronic disease. We have several organs, or systems, that assist us with detoxification: the liver (the primary detox organ), the gut (where 70% of the immune system resides), the skin and respiratory system (primary defenses against environmental pollutants and harmful microorganisms), the immune system (lymphatic channels and nodes line the gut and respiratory systems), and the kidneys (urination and defecation are the two primary routes of elimination).

BH: When did you first become interested in the idea of detoxing?

CL: For years I struggled with brain fog, mood imbalances, chronic fatigue, chronic dizziness, insomnia, hypersensitivity to sounds, and other symptoms for which Western medicine didn't have a framework, much less a remedy. When I returned to the basics of pathology and physiology, I learned, or re-learned, how central detoxification is to maintaining good health, as well as to healing.

There are many conflicting opinions about detoxing- from integrative doctors and wellness experts prescribing highly tailored detox diets, to groups like Harvard Women's Health Watch calling detox "a dubious practice". How do we sort through the confusion? My journey as a patient forced me as a doctor to evaluate the science more closely.

BH: Tell us more

CL: The matter of detox, like most things in life, is more complex and variable than what the textbooks say. That's because of two simple facts: each of us is unique, and most of our detox systems aren't optimized. Our individual capacity to detoxify depends on multiple factors: (1) the genes we inherited from our parents , (2) our cumulative exposure to environmental pollutants , (3) the health of our gut, (4) regular elimination via the gut and kidneys (5) the availability of key nutrients necessary for our liver enzymes and immune system to work properly, and (5) our age.

BH: There's so much information out there! How can we detox our body in a safe and effective way?

CL: Beyond treatment for health challenges, detox is also best done regularly, 2-3 times a year, as prevention and health maintenance. Here are 10 simple steps anyone can take to promote detoxification:

1. Sleep more. In the deep stages of sleep, lymphatic channels in the brain open up and flush out unwanted waste products, including beta-amyloid, which has been associated with Alzheimer's Disease. (If you suffer from chronic insomnia, prioritize this with your health care practitioner.)

2. Eat your broccoli. Compounds in the Brassica family—kale, collards, beets, cauliflower, cabbage—boost your liver's detox enzymes, while providing other nutrients and antioxidants. Steam them, boil them, or mix them into a smoothie. Most functional nutritionists recommend no more than 1 serving a day of cooked Brassicas to avoid the suppressive effect higher amounts may have on the thyroid.

3. Don't skimp on protein. Amino acids like glycine boost your liver's detox enzymes, and cysteine is a necessary cofactor for metallothioneins (proteins that detoxify heavy metals). Bone broth, beans, and wild, oily fish are good sources.

4. Increase your fiber. Aim for regular bowel movements, 1-2 times a day. If you're constipated, biliary waste cannot be efficiently eliminated. And with gut flora imbalances, certain waste products may be reabsorbed into the bloodstream despite the liver having previously filtered it out. Good sources of fiber: non-starchy vegetables, nuts, seeds, flaxseed meal, and beans. Fiber supplements like psyllium or rice bran are alternative choices (~30 g per day + plenty of water).

5. Sweat. Exercise and sauna more. Ubiquitous environmental pollutants like phthalates and PCBs (perfluorinated compounds) have been found to be excreted in sweat. Stay well hydrated and shower off with Castille soap, like Dr. Bronner's.

6. Take a walk in a forest. Studies show this simple exercise reduces stress, improves sleep, and boosts the immune system, all of which facilitate detoxification. If there is no forest close by, take a walk in nature. The wellness benefits may be increased by taking your shoes off.

7. Heal toxic relationships. Easier said than done, but consider joining a support circle or a community forum, or starting therapy sessions. The connection between personal relationships and the immune system is one of the most robust findings in psychoneuroimmunology.

8. Have a cup of green tea. A compound in green tea (EGCG) can boost liver enzymes and also provide antioxidants to combat oxidative stress. Drinking green tea with each meal may help combat oxidative stress that comes from our meals. Opt for decaffeinated green tea if you're sensitive to caffeine or have sleep difficulties.

9. Eat food your grandmother or great-grandmother would have recognized. A whole foods, largely plant-based diet is the foundation for good health, including improved detoxification. Nothing manufactured can match the natural foods our bodies have evolved with.

10. Laugh regularly. Imbalances in thyroid hormones can rob you of simple pleasures, so watch a funny video, play with your dog or child, even fake a laugh (studies show the effects on the body are the same as a real laugh). Laugh while you take your daily thyroid prescription! Laugh while doing #s 1-9 above, too! Laughing boosts circulation, eases digestion, and improves sleep, among other benefits.

CL: There are also certain foods that support detox more than others. Incorporate as many as you can into your diet and enjoy their incredible flavors!

1. Foods rich in omega-3 fatty acids: wild salmon, walnuts & almonds, flax seeds freshly ground, avocado

2. Fruits and vegetables high in antioxidants: berries, kale, cabbage, tomatoes, citrus fruits, parsley, cilantro

3. Foods high in natural fiber: steel-cut oats, legumes, flaxseed meal, fruits & non-starchy vegetables

4. Herbs & spices: turmeric, fresh garlic, cumin, horseradish, ginger


References

Bremner I, Beattie JH. Metallothionein and the Trace Minerals. Annu Rev Nutr, 1990. 10:63-83

Durnas C, Loi DM, Cusack BJ. Hepatic Drug Metabolism and Aging. Clin Pharmacokinet, 19(5): 359-89, Nov 1990.

Genuis S, et al. Biomonitoring and Elimination of Perfluorinated Compounds and Polychlorinated Biphenyls through Perspiration: Blood, Urine, and Sweat Study. ISRN Toxicology, Vol 2013.

Jessen NA, et al. The Glymphatic System: A Beginner's Guide. Neurochem Res, 40(12):2583-99, Dec 2015.

Kiecolt-Glaser JK , et al. Close Relationships, Inflammation, and Health. Neurosci Biobehav Rev, 35(1): 33-38, Sept 2010.

Li Q. Effect of Forest Bathing Trips on Human Immune Function. Environ Health Prev Med, 15(1):9-17, Jan 2010.

Mora-Ripoll R. The Therapeutic Value of Laughter in Medicine, Altern There Health Med, 16(6):56-64, Nov-Dec 2010.

Mwenifumbo JC, Tyndale RF. Genetic Variability in CYP2A6 and the Pharmacokinetics of Nicotine. Pharmacogenomics, Vol 8, No 10, 1385-1402, Oct 2007.

Solomon GS, et al. Cumulative Environmental Impacts: Science and Policy to Protect Communities, Annual Review of Public Health, Vol 37: 83-96, Mar 2016.

Vahter M. Genetic Polymorphism in the Biotransformation of Inorganic Arsenic and its Role in Toxicity. Toxicology Letters. Vol 112-113, 209-217, 15 Mar 2000.

van Poppel G, et al. Brassica Vegetables and Cancer Prevention. Advances in Nutr and Cancer 2, Vol 472, 159-168.

Xie HG, et al. Genetic Variability in CYP3A5 and its Possible Consequences. Pharmacogenomics, Vol 5, No 3, 243-272, Apr 2004.

Yao HT, et al. Protective Effects of EGCG Against Acetaminophen-Induced Liver Injury in Rats, Biomedicine, 5(3):15, Sep 2015.

Life

Don’t let a PVC Yoga Mat Ruin Your Om

Nama-stay away from this material

Yoga is the perfect way to destress while still giving your body a good workout. It's as beneficial for the mind as it is for the body! Plus, it doesn't hurt that you don't have to leave the house to practice it. But while yoga might be good for your health, your yoga mat could have hidden health risks.

The Problem With Yoga Mats

When you think of a yoga mat, you probably picture a soft, sponge-y material that you can easily roll and bend. Turns out, most yoga mats are made from polyvinyl chloride- otherwise known as PVC or vinyl. While this material is good at proving grip and padding, PVC is actually a type of plastic. PVC starts out as a really hard material, but becomes flexible when phthalates are added during production. Your super flexible yoga mat probably has a lot of phthalates added to it, which means you could be exposed to endocrine disrupting chemicals during your downward-facing dog. Yoga mats are also known to peel and flake as they age. These little crumbs could end up all over your house and you could be exposed to harmful chemicals even when you're off the mat!

Plus, the production of PVC is horrible for the environment and can be a big source of pollution. It has also been known to contribute to climate change. That's just not a material we want to purchase!

What You Can Do

Never fear! There are tons of PVC-free yoga mat options out there. Try looking for a yoga mat that's 100% made from natural materials like cotton, cork, or natural rubber. These materials will still provide padding while reducing your exposure to harmful chemicals. Jute is another great option, but be sure to avoid any mats that mix jute with polymer environmental resin (PER), which contains PVC (1).

You can also look for yoga mats that specifically say they're PVC-free, but make sure to carefully check out the materials the mat is made up of. Just because it's advertised as PVC-free doesn't mean it's made from better materials.

If you have an old yoga mat you're no longer using, call your local recycling facility to see whether or not they could recycle it. But be aware that it might be difficult to find a facility that will accept it, since PVC is notoriously hard to recycle (2).


References

  1. https://www.ecocenter.org/healthy-stuff/reports/yoga-mats-2019
  1. https://www.latimes.com/lifestyle/story/2019-07-18/yoga-mats-bad-for-environment
Life

Buying holiday decorations? Here's what you should know

Don't let these chemicals ruin your holiday cheer

You may need to be careful rockin' around the Christmas tree this year! Why you ask? Well, there might be some unexpected chemicals in that holly jolly decoration above your head. Holiday decorations can bring great cheer, but sometimes they can contain an unwanted surprise. Some decorations may be made with toxic chemicals - keep a look out for the ones below!
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Life

Is Your Artificial Christmas Tree Toxic?

Tips to reduce your exposure to these hazardous chemicals

Artificial Christmas trees are becoming increasingly popular for families. They're seen as being convenient since they don't shed needles and can be reused year after year. Because they can be reused, families tend to save money by choosing artificial trees over a real one. A study from the The American Christmas Tree Association (yes that is a real and reputable organization!) performed a life cycle analysis and found that one artificial tree that's reused for eight or more Christmases is more environmentally friendly than purchasing a real tree each year (1). The study also found that Christmas trees, both real and fake, accounted for a tiny part (< 0.1%) of a person's annual carbon footprint.

But are artificial Christmas trees as good for your health as they are for your wallet? The majority of artificial trees are made using a plastic called polyvinyl chloride (PVC) and lead, which is used to stabilize PVC (2). The lead in the trees break down over time and forms lead dust. These particles are released into the air and can cause health issues, especially in young children. Most people do not realize that artificial trees contain lead, and only California requires a lead warning label (2). It is estimated that there are 50 million households in the United States that own artificial trees with lead in them (3).

Don't panic! If you are an owner of an artificial Christmas tree made out of PVC, there are precautions you can take to reduce your family's exposure to lead.

  1. PVC releases more gases when it is first exposed to air. They also release gases as they degrade. A good way to reduce the amount of lead in your household is to take the tree out of the box and air it outside when you first purchase it (4).
  2. If you have used your artificial tree for many Christmases, you may want to consider purchasing a new one. PVC tends to weaken and degrade after nine years (4). Newer artificial trees do not leach as much lead as older ones.
  3. Light cords that come with your artifical tree are prone to have levels of lead that exceed the limit set by the EPA (4). It is recommended that you wash your hands immediately after touching light cords. And definitely don't let young children handle cords.

If you're currently tree-less and in the market for an artificial one, consider purchasing a tree made out of polyethylene. This plastic is safer than PVC and does not leach lead. Additionally, trees made out of polyethylene tend to be more durable than PVC trees.

While artificial PVC Christmas trees don't pose a high health risk overall to the general population, it's very possible for young children to have severe negative health effects (3). It's important to be aware of the health risks that go along with trees made out of PVC, and the ways to avoid lead exposure for yourself and your family this holiday season.


References

  1. https://www.christmastreeassociation.org/real-artificial-christmas-tree-environment/
  2. https://rtkenvironmental.com/lead/warning-hidden-health-hazard-artificial-christmas-trees/
  3. https://www.ncbi.nlm.nih.gov/pubmed/15628192
  4. https://www.menshealth.com/health/a19548208/do-christmas-trees-make-you-sick/
Sometimes it may feel like everywhere you turn, there's some sort of junk food being advertised—whether that's cupcakes or fries or deep fried things on a stick. And more than sometimes, you have a child begging you for a sweet treat or sugary drink. It can feel like a daunting task at times to encourage and foster healthy eating. While we know there are many factors that influence a child's food choices, here's one that you may not have thought of.
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Life

Avoid These Stressful Ingredients the Next Time You Relax with a Bath Bomb

We don't need these chemicals messing with our #selfcare

December means it's time to start thinking about those stocking stuffers or Chanukah gifts for your loved ones. What's better than a bath bomb to relax and take in those sudsy, therapeutic fragrances? Bath bombs can also get your kids to bathe without putting up a fight. They're basically magic! But, have you stopped to think what else they are putting in those bombs to make those suds glisten and fizz?

What's in a Bath Bomb?

It turns out, there can be a whole range of questionable chemicals packed neatly into those appealing little bombs. It's hard to tell exactly what's in each bath bomb because the ingredients vary widely among manufacturers, but fragrances, artificial colors, boric acid, and glitter are some common ingredients.

Fragrance is never a welcome sight on the ingredient list. The FDA does not require companies to disclose ingredients used to make fragrances in products like bath bombs in order to protect company "trade secrets (1)." Many synthetic and natural fragrances also include such hormone-disrupting chemicals as phthalates, which can be absorbed through the skin and have been found to pose specific risks for pregnant women and children (2). Studies have also linked health effects of phthalates to miscarriage, gestational diabetes, reduced IQ, and ADHD with increased exposure to phthalates.

As for dyes, the evidence is limited when it comes to FDA approved dyes readily being absorbed through the skin. However, one study found that certain dyes may be absorbed after shaving (3). Also, young children often swallow water while bathing and ingestion of some of these chemicals for young children is definitely not recommended!

Boric acid also has some side effects that you may not want to risk. It can be absorbed through the mucous membranes and has been linked to hormone disruption and developmental and reproductive toxicity (4). And then there is glitter, which is just more plastic that can end up in our lakes, rivers, and streams.

Alternatives and DIY Recipes

While there may be harmful ingredients in some bath bombs, you don't have to give them up! It's easy to avoid these ingredients with just a little extra effort. You can choose to purchase "fragrance-free" or "phthalate-free" bath bombs, but making your own bath bomb is super easy. Here are also some DIY recipes to try at home.

Ingredients

  • 1 cup baking soda
  • ½ cup citric acid
  • 1 tablespoon cornstarch
  • 1 teaspoon cream of tartar
  • ½ cup finely ground sea salt
  • 1 ½ teaspoons almond oil (or apricot oil)
  • ½ teaspoon coconut oil
  • 1 tablespoon of witch hazel
  • 1 teaspoon beet root powder
  • wild orange essential oil
  • rose essential oil

Directions

  • Blend all dry ingredients in a bowl.
  • Blend wet ingredients in another bowl.
  • Combine all ingredients.
  • Place in mold of choice or just form a ball about 1-2 inches in diameter.
  • Allow the bath bombs to dry for approximately 1-2 days.
  • To use, place bath bomb in the bath.
  • To store, place in airtight container. Storing in a refrigerator can allow the bath bombs to keep for about 3 weeks (5).


References

1.https://www.fda.gov/cosmetics/cosmetic-ingredients/fragrances-cosmetics

2.https://www.atsdr.cdc.gov/toxprofiles/tp73-c1.pdf
3.https://www.ncbi.nlm.nih.gov/pubmed/23127598
4.https://pubchem.ncbi.nlm.nih.gov/compound/Boric-acid#section=Health-Hazardhttps://draxe.com/health/are-bath-bombs-safe/
5.https://draxe.com/beauty/diy-bath-bomb-recipe/
6. https://homemadeforelle.com/bath-bombs-for-kids/#Ingredients
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