Fingerprints may provide important clues about life in the womb, and may even become useful as predictors of disease risk. US researchers, in Atlanta and New York, have now shown that differences in fingerprints between the thumb and little finger are associated with likelihood of developing diabetes later in life.
A person’s fingerprints are set for life by around the 19th week of gestation, roughly halfway through a normal pregnancy. Most organs, including the pancreas, are also formed by that time. Henry Kahn at the Centers for Disease Control and Prevention in Atlanta and colleagues decided to look at quantitative differences in ridges between the first and last fingertips – the thumb and pinkie.
The team speculated that any disturbances during their formation might also say something about the state of the pancreas, and possibly the likelihood of a person developing diabetes as they age. Diabetes results from the failure of the pancreas to produce insulin, or enough insulin, which the body needs to help it take up glucose.
The researchers studied 569 Dutch people, some of whom were in the womb during the Dutch famine of 1944 and 1945, dubbed the “hunger winter”. Kahn and his team tested the volunteers’ glucose tolerance – a measure which is abnormally high in people with diabetes – and also counted the number of ridges on their thumbs and little fingers by rolling the inked digits onto paper...
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