The recommended value by health professionals is a lot higher because this value is used for a healthy lifestyle. The Dietary Reference Intake for Vitamin D (600 UI) is the minimum required for men and women. Many people need almost double that amount to keep up with their lifestyles.
Vitamin D is a vitamin that is made by the body when exposed to sunlight. In areas that do not get much sunlight hours, it is recommended to take supplements.
there isn't really an exact answer. Some people get diabetes genetically, but for the most part if you eat a lot of sugar overtime it will eventually lead to diabetes.
