People get vitamin D through food and by exposure to sunlight. For most adults, vitamin D deficiency isn't a concern. Some, especially those with dark skin and adults older than 65, are at higher risk of the condition.

Stock photo: People get vitamin D through food and by exposure to sunlight. For most adults, vitamin D deficiency isn't a concern. Some, especially those with dark skin and adults older than 65, are at higher risk of the condition. was taken by aman.gupta9 .