What is the term for the natural physical decline with age called senescence?
According to the National Institutes of Health, by 2050 there will be over 2 billion people aged 60 and over, making a better understanding of the aging process crucial. The term for the natural physical decline with age is known as **senescence**, a process that involves the gradual deterioration of physical function in living organisms. It is a biological certainty that every individual will experience, though lifestyle choices and genetics significantly influence its rate and impact.