RT Journal Article A1 Glynne, Sarah T1 Estrogen-Only Hormone Therapy and Dementia JF JAMA JO JAMA YR 2024 DO 10.1001/jama.2024.4071 VO 331 IS 18 SP 1594 OP 1594 SN 0098-7484 AB To the Editor A recent study reported an increased dementia risk in women using estrogen-only menopausal hormone therapy, which mirrors findings of an earlier study by these authors that demonstrated an increased dementia risk associated with combined menopausal hormone therapy. These studies have many similar limitations, including confounding by indication, multiple sources of bias, and failure to adjust for factors known to influence dementia risk. In a similar study that adjusted for multiple confounding factors, estrogen-only hormone therapy was associated with a 1.1% decrease in dementia risk per year when used for more than 10 years (hazard ratio, 0.85; 95% CI, 0.76-0.94; Pā€‰=ā€‰.003). RD 5/20/2024 UL https://doi.org/10.1001/jama.2024.4071