Understanding is the right answer
Answer:
I am living in a nuclear family.Its merits is easy fulfillment of all the needs and requirements and demerits is low financial and physical security.
This varies from person to person. There is a point in time at which hormones in a persons body begin to loose their effective functions, a period I have heard reffered to as adult puberty. In women this is marked by menopause. While you can still theoretically maintain a healthy body at this time, it becomes increasingly difficult. Maintaining a healthy diet and constant exercise are essential to achieving this. A doctor won't tell you much more than this.
Body mass index is the most commonly used simple measure of obesity.