Female hormones change significantly at two primary life stages: puberty and menopause. However, hormonal shifts also occur during the transition periods leading up to these milestones.
Puberty
Puberty marks the beginning of significant hormonal changes in females, typically starting between 8 and 13 years old. During this time, the ovaries begin producing increasing amounts of estrogen and progesterone, triggering the development of secondary sexual characteristics like breast growth, menstruation, and the onset of fertility. Source: Puberty Basics (for Teens) | Nemours KidsHealth
Perimenopause
This transitional phase preceding menopause begins gradually and varies widely among women. Some women may experience changes as early as their mid-30s, while others don't notice symptoms until their 40s. During perimenopause, hormone production, primarily estrogen and progesterone, begins to decline, leading to irregular menstrual cycles and other symptoms. Source: Perimenopause - Symptoms and causes - Mayo Clinic, Source: The Change Before 'The Change'
Menopause
Menopause, typically occurring between ages 45 and 55, marks the complete cessation of menstruation. This signifies a significant drop in estrogen and progesterone production from the ovaries. Source: Aging changes in the female reproductive system: MedlinePlus, Source: Menopause: What It Is, Age, Stages, Signs & Side Effects
Continuous Hormonal Fluctuations
It's important to note that hormonal fluctuations are not limited to just these major life stages. Hormone levels naturally shift throughout a woman's life, influenced by various factors like stress, diet, and overall health. Source: Hormones as You Age | RUSH, Source: Aging changes in hormone production: MedlinePlus Medical
