China: A new study published in the International Journal of Geriatric Psychiatry showed that an inverted U-shaped curve relationship between hemoglobin (HGB) level and overall cognitive profile may exist since both low and high HGB levels might cause cognitive decline in dementia incidence.Globally, there are around 50 million dementia sufferers, and by 2050, that figure is predicted to quadruple. Anemia has been shown to be a risk factor in relation to hypoxic and oxidative stress, in addition to the well-known risk factors for cognitive decline and dementia (diabetes, dyslipidemia, stroke, smoking, sleep disturbances, alcohol consumption, and decreased cognitive activities).

https://medicaldialogues.in/neurology-neurosurgery/news/low-and-high-hemoglobin-levels-closely-associated-with-cognitive-decline-in-elderly-97901

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