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Posted by duddy   September 20, 2015   15449 views

Most foods today are fortified with essential oils like omega-3 fatty acids. Naturally, these oils are found in fish, and are known to benefit many parts of the body, including the eyes, brain, heart, and joints. So, are these so-called beneficial oils important for people who lack the DNA profile needed to metabolise them?

It turns out that the extra omega-3 might not do much good at all. According to a study published in Science, Inuit people living in Greenland whose traditional diet of fish and marine mammals have the right enzymes in their bodies needed to metabolise these foods that are very high fat content.

The researchers reported that their DNA that was most different was on chromosome 11, specifically among genes that control the processing of dietary fatty acids into some of the body’s building blocks. One DNA "letter" or base was the same in almost all the Inuits, but most Europeans lacked this base and only 15% of the Han Chinese had it. Not surprisingly, this goes hand-in-hand with our understanding of evolution, more specifically natural selection giving Inuits an edge over others who didn't historically depend on this food source.

people greenland natural selection
Posted in Discoveries
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