Hormone Changes During Menopause

Menopause is not a sudden change. During the months or years before menopause (perimenopause), the ovaries begin to run out of eggs. Less estrogen and progesterone are produced. This may bring on symptoms such as hot flashes. Twelve months after your last period, you've reached menopause. From that point on, you are in postmenopause.

Perimenopause

In the years leading up to menopause, the ovaries produce less estrogen. Fewer eggs are released. Periods become less regular.

Symptoms you may have:

• Heavier or lighter periods

• Longer or shorter time between periods

• Hot flashes

• Breast tenderness

• Bloating

• Mood swings

Postmenopause

After menopause, very little estrogen is produced. As a result, the uterine lining does not thicken. Periods have ended.

Symptoms you may have:

• No periods

• Vaginal dryness

• Hot flashes

• Mood swings

• Night sweats

• Insomnia