03/04/2026
A 2026 quasi-experimental pretest–posttest control group study examined the effects of inhaled lavender EO on sleep quality in 60 perimenopausal women (ages 45–55) in a primary health care setting. Participants in the intervention group received lavender essential oil via diffuser nightly for seven consecutive days, using 3 to 5 drops diluted in 100 mL of water and diffused in the bedroom for 30 minutes before bedtime, while the control group received no intervention. Sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI). The intervention group demonstrated a marked and statistically significant reduction in mean PSQI scores, whereas the control group showed no significant change. Between-group differences were significant at posttest. The findings suggest that short-term nightly inhalation of lavender EO may meaningfully improve subjective sleep quality in perimenopausal women, supporting its use as a simple, low-cost, non-pharmacologic intervention in primary care settings, though longer-term randomized trials are warranted.
https://ihsjournal.id/index.php/go/article/view/105/61