What Are the Early Signs of Perimenopause in Your 40s?

Early perimenopause signs in your 40s include irregular periods, hot flashes, and sleep disruptions. Most women experience their first symptoms between ages 40-44, with menstrual cycle changes being the most common initial indicator. You may notice periods becoming shorter, longer, heavier, or lighter than usual. Hot flashes affect up to 75% of perimenopausal women, often starting as mild warmth episodes. Sleep problems, mood changes, and brain fog frequently accompany hormonal fluctuations. Other early signs include breast tenderness, decreased libido, and vaginal dryness. These symptoms occur as estrogen levels begin declining 8-10 years before menopause.