Aging (Biology) stories

Aug 14, 2026

Women taking estrogen-only hormone therapy showed fewer Alzheimer's signs in brain tissue

A large study of over 2,000 women found those who used estrogen-only hormone therapy later in life were less likely to develop dementia and showed fewer signs of Alzheimer's disease in their brains upon autopsy.

Aug 14, 20263 sources

Aug 6, 2026

Uterine Bacteria Lactobacillus gasseri Linked to Fertility in Women Over 35, Study Finds

Research involving 149 women suggests that declining levels of beneficial bacteria Lactobacillus gasseri in the aging uterine environment may contribute to fertility challenges in women over 35, pointing to potential bacterial supplement interventions.

Aug 6, 20263 sources

Top claims

▪Biomarker tests collected during life showed that women using estrogen-only hormone therapy had amyloid biomarker levels in blood and spinal fluid consistent with less amyloid accumulating in the brain
▪Among study participants whose brains were examined after death, 18% of estrogen-only hormone therapy users showed no signs of Alzheimer's disease at autopsy, compared to 10% of non-users
▪After accounting for factors like age, education, genetics, race, and hypertension, estrogen-only hormone therapy use was associated with 35% lower odds of showing signs of Alzheimer's disease at autopsy

Subtopics

Alzheimer’s & dementia1 Alzheimer's disease1 Drug Approval and Clinical Trials1 Gut health & microbiome1 Mental health1 Probiotics1 Reproductive Health1 Women’s health1

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