The sunshine vitamin (vitamin D) is more important than you think.
Several researchers have examined the link between vitamin D and brain function and found a well-established relationship between vitamin D deficiency and impaired cognition. Studies have also linked low vitamin D levels to higher risk of dementia.
Worldwide, many adults and children are deficient in vitamin D due to inadequate dietary intake and the use of sunblocks to prevent skin cancer. Vitamin D is synthesized in our skin when we are exposed to direct sunlight, but sunblock impedes this process.
In one research, Dr. Thomas Burne of the University of Queensland Brain Institute, St. Lucia, Australia reported that mice lacking vitamin D were not able to learn new things and they remembered less, compared with the mice in the control group. He also noted a stark reduction in the number and strength of connections between neurons in the hippocampus.
Previous research findings have also suggested that insufficient Vitamin D could compromise the immune system, raise the risk of hypertension and negatively affect insulin secretion in people with type 2 diabetes.
Natural sources of vitamin D include milk, fatty fish and egg yolks. Vitamin D supplements are also available (essential in exclusively breastfed babies).
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