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).
age group - a group of people having approximately the same age. age bracket, cohort. people - (plural) any group of human beings (men or women or children) collectively; old people; there were at least 200 people in the audience. aged, elderly - people who are old collectively; special arrangements were available for the aged.