Which of the following can delay puberty?

Which of the following can delay puberty?

• A. Stress
• B. Nutritional deficiencies
• C. Childhood abuse
• D. Lack of exercise

Answer: (B)

Puberty timing is driven by energy and nutrient status, which the brain uses to decide if there’s enough energy to start reproducing. When nutrition is adequate, signals about energy stores (like leptin) inform the hypothalamus to increase GnRH pulses. GnRH then stimulates the pituitary to release LH and FSH, which drive the gonads to produce sex hormones and initiate puberty. If nutrition is deficient, GnRH signaling slows or pauses, delaying the activation of the reproductive axis and postponing puberty. This direct link between energy availability and reproductive development makes nutritional deficiencies a clear and likely cause of delayed puberty. Stress and childhood abuse can also delay puberty because stress hormones can suppress GnRH, but the standout mechanism here is energy deficiency signaling the brain to postpone reproduction. Lack of exercise doesn’t typically cause delayed puberty; maintaining energy balance is the opposite of signaling scarcity, though extreme exercise with poor intake can contribute to delay.

Puberty timing is driven by energy and nutrient status, which the brain uses to decide if there’s enough energy to start reproducing. When nutrition is adequate, signals about energy stores (like leptin) inform the hypothalamus to increase GnRH pulses. GnRH then stimulates the pituitary to release LH and FSH, which drive the gonads to produce sex hormones and initiate puberty. If nutrition is deficient, GnRH signaling slows or pauses, delaying the activation of the reproductive axis and postponing puberty. This direct link between energy availability and reproductive development makes nutritional deficiencies a clear and likely cause of delayed puberty.

Stress and childhood abuse can also delay puberty because stress hormones can suppress GnRH, but the standout mechanism here is energy deficiency signaling the brain to postpone reproduction. Lack of exercise doesn’t typically cause delayed puberty; maintaining energy balance is the opposite of signaling scarcity, though extreme exercise with poor intake can contribute to delay.