Could Midlife Stress Elevate Alzheimer's Risk in Postmenopausal Women?

Synopsis
Key Takeaways
- High midlife stress increases Alzheimer's risk in postmenopausal women.
- Cortisol levels could serve as an Alzheimer's biomarker.
- Stress reduction strategies may aid in Alzheimer's prevention.
- Understanding hormonal impacts is crucial in Alzheimer's research.
- Further research is needed to explore cortisol's causal role.
New Delhi, May 17 (NationPress) Elevated levels of stress during midlife could potentially heighten the risk of developing Alzheimer's disease in women after they go through menopause, as revealed by a recent study.
Researchers from the University of Texas Health Science Center at San Antonio, USA, found that increased levels of the stress hormone cortisol in midlife can lead to greater amyloid deposition, a characteristic feature of Alzheimer's, in postmenopausal women in later years.
"These findings underline the significance of recognizing early risk factors when biomarkers are still detectable and cognitive decline hasn't yet manifested," stated Arash Salardini, Associate Professor at the institution.
The research, published in the journal Alzheimer's & Dementia, analyzed data from 305 cognitively healthy participants in Massachusetts, USA.
By examining midlife cortisol levels at the start of a 15-year study period and correlating them with disease indicators at the conclusion, the researchers concluded that these cortisol levels could act as a biomarker for Alzheimer's disease.
No significant links were found in males or concerning tau burden, which refers to the tau protein known to contribute to neuronal dysfunction and death.
"Our research indicates that understanding the pathogenesis of Alzheimer's disease must take into account sex and hormonal status, suggesting that stress alleviation and hormonal therapies may be beneficial for Alzheimer's prevention, particularly among vulnerable women," remarked Sudha Seshadri from UT Health San Antonio.
Cortisol is a steroid hormone crucial for maintaining cellular balance and the body's stress response.
The team hypothesized that the effect of cortisol on Alzheimer's pathology would be more pronounced in women, particularly post-menopause, aligning with previous studies.
The findings demonstrated that postmenopausal women with high midlife cortisol levels face an increased risk of developing Alzheimer's disease. The researchers noted that hormonal changes following menopause may enhance the impact of cortisol on amyloid levels.
Salardini emphasized the need for further studies to ascertain whether these early amyloid alterations lead to clinical symptoms and to elucidate the causal relationship between cortisol and the onset of Alzheimer’s disease.