Reliable Information on Nutritional Supplements

Great Source for Reliable Information on Nutritional Supplements

Have you ever found yourself tuning out information about nutritional supplements because it all seems confusing and contradictory? If yes, you are not alone.

One headline says 'get more X' the next headline says 'be careful about too much X' and another says 'X supplementation not necessary at all'. Headlines are meant to sell newspaper and magazines.

They report on what's new not necessarily what is backed by the most evidence. And, the stories are often selected based on findings that are contrarian or against conventional wisdom. After all, who is going to buy a magazine with the headline, "No change in guidelines – eating more plant-based foods is still good for you."

Consumers really need a reliable source of evidence-based recommendations for nutritional supplements. Since these are not regulated by the FDA, there isn't a government run website that you can count on to be unbiased. There are several private companies, non-profits and even individuals that claim to offer comprehensive unbiased information on nutritional supplements, but who has the time to sift through all of these to figure out whose information is the best?

At the risk of offending a number of other great sources, this article is a plug for the Linus Pauling Micronutrient Information Center at Oregon State University at http://lpi.oregonstate.edu/infocenter. Chances are this is a source you've never heard of or looked at, but you should.

The website describes the Linus Pauling Institute as a “source for scientifically accurate information regarding the roles of vitamins, minerals, other nutrients, dietary phytochemicals and some foods in preventing disease and promoting health”.

As you can see from the description, their mission extends beyond nutritional supplements to also include whole foods. This is critically important because sometimes nutrients are more potent together (as in a food) than they are separately.

When you visit the website, you'll have a chance to subscribe to the newsletter near the top of the page. Do it. This isn't another email newsletter but rather a printed, bound newsletter sent to your house containing all of the Institute's latest research.

The folks at OSU are doing excellent work to bring us all trustworthy, evidence based recommendations on the tens of thousands of nutrients in our foods. Take some time to look at their website, bookmark it and share it with others. If there are concepts or terms you don't understand, feel free to ask us during your next appointment or send us an email.

Are Chiropractic X-Rays Safe?

How Safe are Chiropractic X-Rays?

Patients occasionally ask whether chiropractic x-rays are safe, so we wanted to summarize the current FDA statements on x-ray safety and give you a couple credible resources where you can learn more. Read the full article if you want the complete story, but if you are looking for a quick answer, the FDA estimates that the radiation exposure from a chest ray is roughly equivalent to the background radiation you are exposed to in 10 ordinary days on planet Earth.

The FDA states on its website "Don't refuse an X-ray. The risk of not having a needed X-ray is greater than the small risk of radiation."

First of all, there is no difference between a chiropractic x-ray and any other type of x-ray. While x-ray equipment does vary slightly by manufacturer, what really matters is the body part being imaged. Different body tissues absorb radiation in different ways.

To provide consumers with a way of monitoring radiation exposure across multiple sources, the FDA uses an effective dosage scale. Each type of x-ray has an effective dosage associated with it measured in millisieverts (mSv). Since millisieverts isn't a unit of measure most people are familiar with (like a mile or a teaspoon), having a reference value helps put the numbers in context.

The FDA estimates that the average person is exposed to 3.0 millisieverts of radiation per year from naturally occurring radioactive materials and cosmic rays. That's what allows them to state that a 0.1 millisievert dosage from a chest x-ray is equivalent to about 10 days of background radiation exposure.

Compared to a chest x-ray, x-rays of the extremities (arms and legs) have a much lower effective dosage and x-rays of the lower torso have a higher effective dosage. Recall that the effective dosage comes mainly from the body part being imaged not the intensity or duration of the x-ray machine pulse. Here's a summary of effective dosages and background radiation equivalents for the various types of x-rays a chiropractor is likely to recommend:

• Extremities - 0.001 mSv – similar to 3 hours background radiation
• Chest - 0.1 mSv - similar to 10 days background radiation
• Spine - 1.5 mSv - similar to 6 months background radiation

The FDA website and the excellent radiologyinfo.org website from the American College of Radiology and the Radiological Society of North America both point out that disease risks from radiation exposure are cumulative across time and that patients play a critical role in tracking their own exposure levels.

Since you may be working with multiple health care providers in different specialty areas, you should keep a log of your exposures. Here is a link to a site where you can download a personal Patient Medical Imaging Record: http://imagewisely.org/Patients.aspx

Note that this article refers to effective exposures and recommendations for adults. If you are pregnant or looking for x-ray safety information for children, visit imagegently.org


Bibliography
Consumer Updates Reducing Radiation from Medical X rays. (n.d.). Retrieved 8 29, 2011, from FDA.gov: http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm095505.htm

Patient Safety X ray and CT. (n.d.). Retrieved 8 29, 2011, from Radiologyinfo.org: http://www.radiologyinfo.org/en/safety/index.cfm?pg=sfty_xray

Radiology Risks Benefits for Patients Image Wisely Image Wisely. (n.d.). Retrieved 8 29, 2011, from ImageWisely.org: http://imagewisely.org/Patients.aspx