Why is it that many people have low progesterone now

Patient's question:

No

Doctor's answer:

Causes of low progesterone:
(1) Luteal phase defect, when the ovarian corpus luteum fails to develop properly, progesterone levels correspondingly decrease.
(2) Severe dysfunction of the adrenal glands or thyroid can also affect ovarian function, leading to ovulation disorders and a subsequent decrease in progesterone levels.
(3) Insulin resistance in the body.
(4) Chronic stress.
(5) A diet high in sugar but lacking sufficient nutrients.