irregular menses and thyroid hormone

menses and thyroid hormone

both hypo and hyperthyroidism case irregular menses.but how?

hypothyroidism

• thyroid hormone is anti prolactin effect.
• low thyroid hormone will increase the prolactin secretion.
• the high prolactin will inhibit release of FSH and LH by the anterior pituitary gland.
• This will cause no follicular cell development and lead to irregular menstrual cycle

hyperthyroidism

• increase thyroid hormone will alter the androgen metabolism.
• this will increase conversation of androgen to estrogen
• high estrogen level will inhibit secretion of FSH and LH
• lead to irregular menstrual cycle

different explaination but same result!