Oestrogen

Oestrogen (or Estrogen in American English) is the primary female sex hormone. It is responsible for the development and regulation of the female reproductive system and secondary sex characteristics. There are three major endogenous estrogens in females that have estrogenic hormonal activity: estrone, estradiol, and estriol. The estrane steroid estradiol is the most potent and prevalent of these.

Types of Oestrogen

There are three types of oestrogen, namely:

• Estrone: This is the only type of oestrogen that the body can make after menopause. It is produced by the ovaries and fat cells.
• Estradiol: This is the most common type of oestrogen and is primarily produced in the ovaries. It is the strongest type of oestrogen and plays a crucial role in the menstrual cycle and fertility.
• Estriol: This type of oestrogen is produced in large amounts during pregnancy.

Functions of Oestrogen

Oestrogen has many functions, including:

• Regulating the menstrual cycle
• Maintaining pregnancy
• Preparing the body for fertility
• Developing secondary female sex characteristics
• Regulating cholesterol levels
• Protecting bone health

Oestrogen and Health

Oestrogen has a significant impact on overall health. Abnormal levels of oestrogen can lead to a variety of health problems, such as infertility, osteoporosis, and certain types of cancer.

See Also

• Hormone
• Endocrine system
• Menopause
• Hormone replacement therapy

Oestrogen Resources
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