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The Effects of Sex Hormones on Cognition and Mood in Older Adults

Status
Terminated
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00000175
Enrollment
Unknown
Registered
1999-11-01
Start date
Unknown
Completion date
2005-06-30
Last updated
2009-12-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cognition Disorders, Mood Disorders

Keywords

Emotions, Cognition, Aging, Memory

Brief summary

This study is investigating the effects of hormone replacement therapy on memory, mental abilities and mood in older adults aged 65-90. During the nine month long study, men will take testosterone for three months and women will take estrogen for three months. At four points during the study (once every three months), participants will complete a test battery and have blood drawn.

Detailed description

Double-blind, placebo-controlled, crossover study investigating the effects of estrogen replacement and testosterone replacement on cognition and mood in older adults. Women who have not had a hysterectomy will be given Prempro (estrogen with progesterone to protect the uterine lining), and hysterectomized women will be given Premarin (estrogen only).

Interventions

DRUGEstrogen
DRUGTestosterone

Sponsors

National Institute on Aging (NIA)
Lead SponsorNIH

Study design

Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE

Eligibility

Sex/Gender
ALL
Age
65 Years to 90 Years
Healthy volunteers
Yes

Inclusion criteria

* Women and men aged 65-90 who have not received hormone replacement for the last three months.

Exclusion criteria

* Previous head injury with loss of consciousness for more than one hour. * Men with a history of prostate cancer. * Men on testosterone replacement within the past three months. * Women with a history of breast or uterine cancer. * Women on estrogen replacement within the past three months.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026