Even Beverages Can Leave Their 'Geographical' Imprint on You

Have you ever imagined if bottled water can leave its mark on you? Well, consumption of beverages such as soda pop, micro brew-beer and bottled water - experts explain in a new study - leaves a geographical location-related chemical imprint in hair that can be used to track people's movements.

According to Lesley Chesson and colleagues, the body removes hydrogen and oxygen atoms from water (H2O), and beverages containing water, and incorporates them into proteins, including the protein in hair.

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Hydrogen and oxygen exist in different forms, or isotopes. The proportions of those isotopes vary in a predictable way geographically, with higher values in low-latitude, low-elevation, or coastal regions, for instance, and lower values elsewhere.

Since manufacturers usually use local or regional water sources in producing beverages, isotope patterns in hair could serve as a chemical "fingerprint" to pinpoint the geographic region where a person has been.

The scientists analysed isotope patterns in bottled water, soda pop, and beer from 33 American cities and found that patterns in the beverages generally matched those already known for the tap water.

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They also noted that the isotope pattern in beverages tends to vary from city to city in ways that give cities in different regions characteristic "iso-signatures."

A person who drinks a beer or soda in Denver, Des Moines, or Dallas, for instance, consumes a different isotope signature than a person in Las Cruces, Las Vegas, or Laramie.

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The finding may help trace the origin of drinks or help criminal investigators identify the geographic travels of crime suspects and other individuals through analysis of hair strands, the study suggests.

The study appears in ACS' bi-weekly Journal of Agricultural and Food Chemistry.

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Source-ANI