Many teaching in medical schools today were raised in the better-living-though-chemistry age, when infant formula was thought to trump the attributes of breast milk. (Formula was certainly an improvement over the non-pasteurized cow's milk that killed many infants at the turn of the 20th century, when breast-feeding was not in vogue).

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However, subtle changes to their body chemistry caused by space flight may place them at greater risk if they undergo medical treatment back on Earth.

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Bruns, director of clinical chemistry at the University of Virginia and editor of Clinical Chemistry, says he has seen an increase in the number of tests cited in his medical journal.

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After taking organic chemistry classes at Colorado State University near her home in Fort Collins, Taylor applied to three medical schools.

FORBES: Magazine Article