Tag Archives: nutritional deficiencies

No More Pricks: Trading blood tests for tear tests?

Here at A4M, we are all about moving forward into the future of medical care. How many years have we been drawing blood to detect health and nutritional deficiencies in our makeup?
Too many.

We are actually starting to see that this may now change. We may have figured out that we may not need to be pricked by a needle to get tested.
A study now suggests that tears could be considered an alternate source of diagnostic fluid for testing for nutritional deficiencies.

Researchers from Michigan Technological University in partnership with UP Health System -Portage in Michigan have determined that tears are not only easier to produce than blood, but tears are also easier to work with when analyzing as a fluid.

Maryam Khaksari, study author and research specialist at Michigan Tech, said studies show that people with nutritional deficiencies blink more than those without deficiencies. “We hypothesized that nutrients are transferred to the living cells of your cornea through your tears,” Khaksari said. “We would like to translate the information we have for blood to tears. In this paper, we did show that there are correlations between vitamin concentrations in tears and blood – so it’s possible.”

The researchers involved in this study retrieved samples of both tears and blood from 15 different families that each had a four-month-old child. The samples taken from a child and a parent were then compared between tears and blood, infants and their parents, and against self-reported dietary intakes.

Multiple vitamins were all detected in both the tears and blood, and although Vitamin A was only found in the blood samples, researchers claim this is only the beginning. This project is the first step which proved vitamins are detectable in tears, and that they do correlate with blood levels. “Our goal was to seek the viability of establishing measurable vitamin concentrations in tears for nutritional assessments,” Khaksari said. “Your body cannot manufacture vitamins, and vitamins reflect available food sources in your body. That’s what makes them good indicators of nutritional health.”

We fully understand that this is only the start of the discussion regarding the trade of blood for tears, but we are very excited to follow this research and report back to all of our followers that there may be a day where we don’t have to have a needle draw blood to determine everything!

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