Cigarette smoking and the age at menopause

Area of Science:

• Epidemiology
• Reproductive Health

Background:

• Menopause is a critical reproductive milestone.
• Factors influencing the age of natural menopause require further investigation.

Purpose of the Study:

• To investigate the association between smoking and the age of natural menopause.
• To examine the impact of other lifestyle factors on menopause timing.

Main Methods:

• Analysis of data from 15,464 healthy Australian women.
• Utilized logistic regression and Kaplan-Meier analysis.
• Assessed the influence of smoking, obesity, alcohol, and medications.

Main Results:

• Women smoking 10+ cigarettes daily experienced menopause 1.3 years earlier.
• Obesity, alcohol, analgesics, sedatives, tranquilizers, and antidepressants did not affect menopause age.
• Smoking history and obesity did not influence the probability of natural versus surgical menopause.

Conclusions:

• Heavy smoking is a significant factor in earlier natural menopause.
• Lifestyle factors like obesity and alcohol intake do not appear to alter menopause timing.
• Logistic regression is a suitable method for analyzing menopause age data.