A recent study conducted by a team of international researchers has uncovered a disorder that is likely to have been present in the Viking population. Dubbed the “Viking Disease Disorder,” it is believed to be a product of Neanderthal genes. The research suggests that the disorder, which is characterized by a specific combination of physical and cognitive impairments, was passed on by the Neanderthals to their Viking descendants. The disorder is believed to have been present in the Viking population for centuries, and its symptoms include impaired vision and hearing, fatigue, and cognitive impairments such as difficulty with problem solving and memory. While the exact cause of the disorder is still unknown, the research team believes that it is linked to a gene mutation that occurs when Neanderthal and Viking genes mix.

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source: Phys.org