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Cohort study, 2016

Does switching to birth control with natural estrogen improve quality of life and PMS?

Yes, women who switched to birth control containing natural estrogen had significant improvements in quality of life and PMS symptoms within 6 months. Most women stayed on it with few side effects.

Moderate study design 857 women (785 completed) at Spanish gynecology clinics in three contraception groups

What they did

Observational study at multiple Spanish clinics. 857 women attended baseline and 6-month visits. Three groups were compared: women using condoms who continued, women using condoms who switched to natural estrogen birth control, and women using older-type estrogen who switched to natural estrogen. Quality of life was measured at baseline and 6 months.

What they found

785 women completed the study. Women who switched from condoms (n=224) had the largest improvement in quality of life. Women who switched from older-type birth control (n=489) also showed significant improvement. Continuation rate was 91.4% and 1.7% reported side effects.

What it means for you

Switching to natural estrogen birth control improves quality of life, especially for women dissatisfied with their previous method. Most women tolerated it well and continued using it. The study was done in Spain, so results may differ elsewhere. Specific PMS symptom improvements are not detailed.

785

women completed study

91.4%

continuation rate

1.7%

reported side effects

About the study

Original title
Effect on quality of life of switching to combined oral contraception based on natural estrogen: an observational, multicentre, prospective phase IV study (ZOCAL Study)
Authors
Lete I, de la Viuda E, Pérez-Campos E et al.
Journal
The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception
Year
2016
Study design
Cohort study
Participants
857
What was tested
Combined oral contraception based on natural estrogen

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