I read that aging lowers the body's capacity to produce vitamin D from the sun and one may have to take a vitamin D3 supplement during old age to meet regular requirements. Please comment on this.

Agree to Comment Terms

Please abide by the following:

• If you make a statement of fact, such as whether a type of treatment does or does not work, state your basis -- such as personal experience or a published study.
• If you make a positive or negative comment about a product, note whether or not you have a financial interest in the product or in a competing product.
• Please be respectful in your tone.
• Please do not submit any type of HTML markup or scripting as it will not be accepted, nor will posts that exceed 2,500 characters.

For your privacy, only your first name (from your account) followed by a random number will appear with your comment. Your last name and email address will not be displayed.