Dietary fats are important because they are the ones that produce  energy for the body. Fats should be monitored since excessive fats  can be risky for your health.
Age last birthday: One method of insurance rating which rates people a their age as of their last birthday, with such rating held until the next birthday. If your policy is approved at your current age (prior to your next birthday), you will be rated at your current age (as opposed to age nearest birthday).
Get age from birthday. If you need to calculate a person's age from their birth date, you can do so with the YEARFRAC, INT, and TODAY functions. In the generic version of the formula above, birthdate is the person's birthday with year, and TODAY supplies the date on which to calculate age. Because this formula uses the TODAY function, it will continue to calculate the correct age in the future as well.