I recently wrote about how much more attention horses get with regards to nutrition's importance in fertility than we humans do. Since so many of my inCYST friends also seem to be cat lovers, I thought I'd share some pertinent wisdom from the feline world.
You may already know my friend Kate, whose blog http://www.moderncat.net/ is famous world-wide for its information about stylish kitty accessories.
Today Kate has posted some information about handmade pottery dishes for cats. If you've ever had a cat with acne, you've probably been told to switch from plastic dishes to clay ones. The reason for this is that acne-causeing bacteria can grow on the plastic dishes.
Humans don't do so well with plastic, either. Not only is there a risk for bacteria, but some plastics can mimic estrogens. They're not really the kind of estrogen our body likes to use, and it confuses our feedback systems to have the wrong kind of estrogen floating around the body.
As it gets warmer, and we tend to carry water bottles around to stay hydrated, we have to be aware of how we transport that water. Plastic bottles left in purses, cars, etc, are simply not a good idea. Be sure you look for a metal bottle. You can find them in most stores these days, but if you're having trouble in your area, here's one I found at amazon.com: Eco-Friendly Wide Mouth 25 oz, 750 ml Stainless Steel Sports Water Bottle — BPA Free
Now you can keep kitty healthy, yourself healthy, and by keeping all those plastics out of landfills, you are keeping our planet healthy as well. A great and easy way to celebrate Earth Month!
I had the most wonderful Sunday afternoon with a newly pregnant client and her husband. She's been told that her progesterone is low, and she was interested in knowing if there is anything she can do, naturally, to help improve the outcome of her pregnancy. We discussed five different categories of actions. Since this is an issue many women face, I'm adding them to the lineup of planned posts, today being the first of five installments.
Progesterone can be low if estrogen is high. In many cases, it's not the natural estrogen your own body is making, but environmental chemicals resembling estrogen that confuse the body.
To reduce your exposure to unnecessary estrogen…
1. Stay away from plastic. Store your leftovers in glass containers. Be absolutely sure your food does not come in contact with plastic or Saran during heating. Avoid plastic water bottles; metal varieties are pretty easy to find in your Whole Foods or REI store.
2. Use natural cosmetics and hair dyes. inCYST Provider Carmina McGee, who is a licensed aesthetician as well as a registered dietitian, has shared that the primary offending chemical, phthalate, is gradually disappearing out of cosmetics. But just to be sure, read your cosmetic and nail polish labels. Make your cosmetic shopping easy by using an all-natural brand such as Body Shop or Arbonne.
3. Get to know your local eco-friendly decorating and remodeling stores. I recently painted my condo with paint that was free of volatile organic compounds (also known as non-VOC). I used the Benjamin Moore brand which was available at a local Ace Hardware, because I liked the color selection…but there were several eco-friendly brands, and remodeling stores I found while shopping around. One store also had quite a few"green" cleaning supplies as well as carpet glue.
4. If you are not sure of the contents of inks, glues, cleaning solvents, fertilizers, pesticides, fire retardant fabrics, etc., minimize your contact with it. Here's a great list from the National Institutes of Health for your reference.
5. Minimize your intake of dietary estrogens. This one can be a little tricky, since one of the tricks we've been recommending for getting pregnant has been supplementing with flaxseed oil, a natural source of estrogen. Once you know you're pregnant, best to back off on the flaxseed. (Special note: This release I'm linking is so new the actual study is not yet listed in the National Library of Medicine database. As soon as it is, I'll be sure to evaluate and report in more detail here.)
The other food to be aware of is soy--whole soy foods such as edamame and tofu are ok, but stay away from isolates that are often used as fillers.
6. Keep your sleeping environment as dark as possible at night. Close the drapes. Use eye shades. Eliminate televisions and computers from the bedroom.
What I really like about this first list is that it is, really, about living cleaner and greener. So choices you make for your pregnancy are doing double duty and helping out the planet!
I'm just posting this release verbatim, no need for an editorial.
Public release date: 21-May-2009 http://www.eurekalert.org/pub_releases/2009-05/hsop-bcu052109.php
Contact: Todd Datz tdatz@hsph.harvard.edu 617-432-3952 Harvard School of Public Health
BPA, chemical used to make plastics, found to leach from polycarbonate drinking bottles into humans
Exposure to BPA may have harmful health effects
Boston, MA — A new study from Harvard School of Public Health (HSPH) researchers found that participants who drank for a week from polycarbonate bottles, the popular, hard-plastic drinking bottles and baby bottles, showed a two-thirds increase in their urine of the chemical bisphenol A (BPA). Exposure to BPA, used in the manufacture of polycarbonate and other plastics, has been shown to interfere with reproductive development in animals and has been linked with cardiovascular disease and diabetes in humans. The study is the first to show that drinking from polycarbonate bottles increased the level of urinary BPA, and thus suggests that drinking containers made with BPA release the chemical into the liquid that people drink in sufficient amounts to increase the level of BPA excreted in human urine.
The study appears on the website of the journal Environmental Health Perspectives and is freely available at http://www.ehponline.org/members/2009/0900604/0900604.pdf.
In addition to polycarbonate bottles, which are refillable and a popular container among students, campers and others and are also used as baby bottles, BPA is also found in dentistry composites and sealants and in the lining of aluminum food and beverage cans. (In bottles, polycarbonate can be identified by the recycling number 7.) Numerous studies have shown that it acts as an endocrine-disruptor in animals, including early onset of sexual maturation, altered development and tissue organization of the mammary gland and decreased sperm production in offspring. It may be most harmful in the stages of early development.
"We found that drinking cold liquids from polycarbonate bottles for just one week increased urinary BPA levels by more than two-thirds. If you heat those bottles, as is the case with baby bottles, we would expect the levels to be considerably higher. This would be of concern since infants may be particularly susceptible to BPA's endocrine-disrupting potential," said Karin B. Michels, associate professor of epidemiology at HSPH and Harvard Medical School and senior author of the study.
The researchers, led by first author Janeny Carwile, a doctoral student in the department of epidemiology at HSPH, and Michels, recruited Harvard College students for the study in April 2008. The 77 participants began the study with a seven-day"washout" phase in which they drank all cold beverages from stainless steel bottles in order to minimize BPA exposure. Participants provided urine samples during the washout period. They were then given two polycarbonate bottles and asked to drink all cold beverages from the bottles during the next week; urine samples were also provided during that time.
The results showed that the participants' urinary BPA concentrations increased 69% after drinking from the polycarbonate bottles. (The study authors noted that BPA concentrations in the college population were similar to those reported for the U.S. general population.) Previous studies had found that BPA could leach from polycarbonate bottles into their contents; this study is the first to show a corresponding increase in urinary BPA concentrations in humans.
One of the study's strengths, the authors note, is that the students drank from the bottles in a normal use setting. Additionally, the students did not wash their bottles in dishwashers nor put hot liquids in them; heating has been shown to increase the leaching of BPA from polycarbonate, so BPA levels might have been higher had students drunk hot liquids from the bottles.
Canada banned the use of BPA in polycarbonate baby bottles in 2008 and some polycarbonate bottle manufacturers have voluntarily eliminated BPA from their products. With increasing evidence of the potential harmful effects of BPA in humans, the authors believe further research is needed on the effect of BPA on infants and on reproductive disorders and on breast cancer in adults.
"This study is coming at an important time because many states are deciding whether to ban the use of BPA in baby bottles and sippy cups. While previous studies have demonstrated that BPA is linked to adverse health effects, this study fills in a missing piece of the puzzle—whether or not polycarbonate plastic bottles are an important contributor to the amount of BPA in the body," said Carwile.
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The study was supported by the Harvard University Center for the Environment and the National Institute of Environmental Health Sciences Biological Analysis Core, Department of Environmental Health, HSPH. Carwile was also supported by the Training Program in Environmental Epidemiology.
"Use of Polycarbonate Bottles and Urinary Bisphenol A Concentrations," Jenny L. Carwile, Henry T. Luu, Laura S. Bassett, Daniel A. Driscoll, Caterina Yuan, Janenifer Y. Chang, Xiaoyun Ye, Antonia M. Calafat, Karin B. Michels, Environmental Health Perspectives, online May 12, 2009.
