Good-quality studies on aromatherapy are rare. One 2023 randomized trial from the University of California, Irvine had “astonishing” findings. One group of study participants aged 60 to 85 used a diffuser every night for six months (two hours of exposure to natural oil infusions of rose, orange, eucalyptus, lemon, peppermint, rosemary, and lavender), while the other received a sham treatment (trace scent amounts). Participants then underwent…
