A deficiency of Vitamin D in the body could lead to an increased risk of heart disease, multiple sclerosis, rheumatoid arthritis, depression and even dementia. A lot of scientific studies have found a link between Vitamin D deficiency and higher risk of developing dementia. One particular study by Australian researchers showed that increased exposure to the sun, which is a major source of Vitamin D, can reduce the risk of dementia. Another study from 2014, shows that patients with a deficiency in vitamin D were substantially more at risk of developing the condition. While link with dementia has not be verified yet, more research in this field can definitely help us get some answers about a condition that has no cure. Meanwhile, load up on the following natural sources of Vitamin D to keep all these ailments at bay.