PHILADELPHIA – , according to research presented at the annual meeting of the Menopause Society (formerly the North American Menopause Society).
“This work suggests that markers of hypothalamic-pituitary-axis activation that capture total cortisol secretion over multiple months, [such as] hair cortisol, strongly correlate with cognitive performance on attention and working memory tasks, whereas measures of more acute cortisol, [such as] salivary cortisol, may be more strongly associated with depression symptom severity and verbal learning,” Christina Metcalf, PhD, an assistant professor of psychiatry in the Colorado Center for Women’s Behavioral Health and Wellness at the University of Colorado at Denver, Aurora, told attendees. “Given the associations with chronic stress, there’s a lot of potential here to increase our knowledge about how women are doing and managing stress and life stressors during this life transition,” she said.
Christina Metcalf
The study involved collecting hair and saliva samples from 43 healthy women in late perimenopause or early postmenopause with an average age of 51. The participants were predominantly white and college educated. The hair sample was taken within 2 cm of the scalp, and the saliva samples were collected the day after the hair sample collection, at the start and end of a 30-minute rest period that took place between 2:00 and 3:00 p.m. local time.
All the participants had an intact uterus and at least one ovary. None of the participants were current smokers or had recent alcohol or drug dependence, and none had used hormones within the previous 6 months. The study also excluded women who were pregnant or breastfeeding, who had bleached hair or no hair, who were taking steroids, beta blockers or opioid medication, and who had recently taken NSAIDS.
Measuring hair cortisol more feasible
The study was conducted remotely, with participants using video conferencing to communicate with the study personnel and then completing study procedures at home, including 2 days of cognitive testing with the California Verbal Learning Test – Third Edition and the n-back and continuous performance tasks. The participants also completed the Center for Epidemiologic Studies Depression Scale (CES-D).
Participants with higher levels of hair cortisol and salivary cortisol also had more severe depression symptoms (P < .001). Hair cortisol was also significantly associated with attention and working memory: Women with higher levels had fewer correct answers on the 0-back and 1-back trials (P < .01) and made more mistakes on the 2-back trial (P < .001). They also scored with less specificity on the continuous performance tasks (P = .022).
Although no association existed between hair cortisol levels and verbal learning or verbal memory (P > .05), participants with higher hair cortisol did score worse on the immediate recall trials (P = .034). Salivary cortisol levels, on the other hand, showed no association with memory recall trials, attention or working memory (P > .05).
Measuring cortisol from hair samples is more feasible than using saliva samples and may offer valuable insights regarding hypothalamic-pituitary-axis activity “to consider alongside the cognitive and mental health of late peri-/early postmenopausal women,” Dr. Metcalf told attendees. The next step is to find out whether the hypothalamic-pituitary-axis axis is a modifiable biomarker that can be used to improve executive function.
The study was limited by its small population, its cross-sectional design, and the lack of covariates in the current analyses.