Question

Which hormone increases with age?

• A. GH
• B. Prolactin
• C. Parathormone
• D. Insulin

Hint:

Think of the hormone behind senile osteoporosis and falling vitamin D.

Answer 1

The Correct Option is C

Step 1: The question asks which hormone shows a rising level as a person gets older. Among the options, parathyroid hormone (PTH, parathormone) is the one that classically increases with advancing age.

Step 2: With ageing there is reduced renal hydroxylation of vitamin D, lower calcium absorption from the gut, and a tendency to mild hypocalcaemia. The parathyroid glands respond by secreting more PTH, a state often called secondary or senile hyperparathyroidism.

Step 3: The chronically raised PTH increases bone resorption to maintain serum calcium, and this is one contributor to age-related bone loss and osteoporosis.

Step 4: Why the others are wrong: growth hormone (GH) declines steadily after young adulthood (somatopause), prolactin does not rise as a normal ageing feature, and insulin secretion and sensitivity generally fall with age. So the correct answer is parathormone.