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Can kitchen spoons be dangerous spoons? Too little or too much medicine, depending on spoon size

Date:
January 5, 2010
Source:
Cornell Food & Brand Lab
Summary:
A new study illustrates the dangers of using kitchen spoons to measure liquid medicine.
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Research led by Dr. Brian Wansink, director of the Cornell Food and Brand Lab, shows we should not rely upon kitchen spoons when measuring liquid medicine. Here, Dr. Wansink conducts a test pour in the lab's kitchen.
Credit: Jason Koski

A new study published in the Jan. 5 issue of the Annals of Internal Medicine illustrates the dangers of using kitchen spoons to measure liquid medicine.

Former cold and flu sufferers were asked to pour one teaspoon of nighttime flu medicine into kitchen spoons of differing sizes. Depending upon the size of the spoon, the 195 former patients poured an average of eight percent too little or 12 percent too much medicine.

"When pouring into a medium-size tablespoon, participants under-dosed. But when using a larger spoon, they poured too much medicine," said Dr. Brian Wansink, Director of the Cornell Food and Brand Lab, who led the study.

"Twelve percent more may not sound like a lot, but this goes on every four to eight hours, for up to four days," Wansink explained. "So it really adds up -- to the point of ineffectiveness or even danger."

Visual illusions and spatial relationships are familiar topics in Wansink's work in food and eating behavior. In his book Mindless Eating: Why We Eat More Than We Think, he shows how smaller plates can unknowingly decrease how much people eat, and how taller glasses can decrease the amount of alcohol poured by even expert bartenders.

"Simply put, we cannot always trust our ability to estimate amounts," said the study's co-author, Dr. Koert van Ittersum, Assistant Professor of Marketing at Georgia Tech. "In some cases it may not be important, but when it comes to the health of you or your child, it is vital to make an accurate measurement."

Wansink and van Ittersum recommend using a proper device -- a measuring cap or dropper, or dosing spoon or syringe -- to measure liquid medicine.

More information about this study can be found at www.FoodPsychology.cornell.edu/medicinespoons.html


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The above post is reprinted from materials provided by Cornell Food & Brand Lab. Note: Materials may be edited for content and length.


Cite This Page:

Cornell Food & Brand Lab. "Can kitchen spoons be dangerous spoons? Too little or too much medicine, depending on spoon size." ScienceDaily. ScienceDaily, 5 January 2010. <www.sciencedaily.com/releases/2010/01/100104181614.htm>.
Cornell Food & Brand Lab. (2010, January 5). Can kitchen spoons be dangerous spoons? Too little or too much medicine, depending on spoon size. ScienceDaily. Retrieved August 28, 2015 from www.sciencedaily.com/releases/2010/01/100104181614.htm
Cornell Food & Brand Lab. "Can kitchen spoons be dangerous spoons? Too little or too much medicine, depending on spoon size." ScienceDaily. www.sciencedaily.com/releases/2010/01/100104181614.htm (accessed August 28, 2015).

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