Androgen levels in women using Norplant implants

Area of Science:

• Endocrinology
• Reproductive Health
• Dermatology

Background:

• Hormonal contraceptives, such as Norplant implants, can affect hormone levels.
• The relationship between hormonal changes and side effects like acne requires further investigation.

Purpose of the Study:

• To investigate the impact of levonorgestrel implants on sex hormone binding globulin (SHBG) and androgen levels.
• To determine if Norplant implants are associated with increased facial acne.

Main Methods:

• Measured plasma concentrations of SHBG, testosterone, free testosterone, androstenedione (A4), and levonorgestrel in women using levonorgestrel rods.
• Compared hormone levels and acne incidence between women with and without self-reported acne during Norplant use.

Main Results:

• Levonorgestrel treatment led to significant decreases in SHBG, total testosterone, and A4, with no change in free testosterone.
• No significant differences in SHBG, testosterone, or levonorgestrel levels were found between women with and without acne.
• Women reporting increased acne were more likely to have had prior acne before treatment.

Conclusions:

• Norplant implant treatment does not increase plasma androgen levels.
• Acne development during Norplant use is not linked to altered androgen levels but may be related to pre-existing acne conditions.