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When a woman starts puberty, her body produces estrogen.1 When estrogen declines, perimenopause starts, and the body has to adjust to the hormonal changes.1

Changes during perimenopause

While most of the hormonal changes are due to the decrease in estrogen,1 the progesterone level also decreases over time. That said, the decrease is more like a rollercoaster, as both levels rise and fall during perimenopause.3

When estrogen is high

Symptoms can be similar to PMS symptoms.2 On top of that, a decrease in estrogen can lead to bone thinning or changes in cholesterol levels. This is one of the reasons why regular check-ups with your doctor are encouraged.1

When estrogen is low

On the flip side, hot flashes or night sweats are linked to lower estrogen levels. What’s more, the up and down of the hormones can happen at the same time as a menstrual cycle.2

When should you see a doctor

If your symptoms interfere with your health and well-being, or if you’re concerned about anything, speak to your doctor who may recommend hormone therapy, or other treatment, to help you transition smoothly through this beautiful season of your life.