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Ae22.5

17-Alpha-Estradiol Research

Mostly mechanism / observationalLimited safety

4 peer-reviewed studies

What the evidence says

Mostly mechanism / observational

Most 17-Alpha-Estradiol studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.

Most evidence is from mixed-quality studies published 2016–2024.

Based on 4 studies

Confidence

Very low

By outcome

Lifespan & aging (male mice)
Mostly mechanism / observational4 studies
Metabolic & inflammation
Too few graded studies2 studies
Safety profile
Too few graded studies1 study

Steady research

1 study in the last 5 years

20162024

1Animal2016

A weakly estrogenic agonist (17α-estradiol) produced longer lifespan in male mice.

Strong, Miller, Antebi, Astle, Bogue, Denzel · Aging cell (2016)

NIA ITP study: 17α-estradiol extended lifespan in male genetically heterogeneous mice
Minimal feminizing activity despite being an estradiol isomer
One of several agents tested; the male-specific result is notable

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2Animal2017

17α-Estradiol alleviated age-related metabolic and inflammatory dysfunction in male mice.

Stout, Steyn, Jurczak, Camporez, Zhu, Hawse · The journals of gerontology. Series A, Biological sciences and medical sciences (2017)

Mechanistic mouse study of 17α-estradiol in aging males
Improved metabolic parameters and reduced inflammation
Supports the metabolic basis of the lifespan effect

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3Animal2020

17α-Estradiol promoted ovarian aging in female mice, highlighting a sex-specific effect.

Isola, Zanini, Sidhom, Kopchick, Bartke, Masternak · Experimental gerontology (2020)

Study showing 17α-estradiol can accelerate ovarian aging in females
Directly demonstrates the sex-specific, female-harm caveat
Tempers any assumption of cross-sex benefit

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4Animal2024

17α-Estradiol alleviated high-fat-diet-induced inflammatory and metabolic dysfunction.

Bubak, Mann, Borowik, Pranay, Batushansky, Vieira de Sousa Neto · American journal of physiology. Endocrinology and metabolism (2024)

Recent mouse study of 17α-estradiol against diet-induced metabolic dysfunction
Reduced inflammation and improved metabolic markers
Reinforces the metabolic-aging mechanism

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View in Research Library

17-Alpha-Estradiol Research

Mostly mechanism / observational

Longer lifespan in male mice treated with a weakly estrogenic agonist, an antioxidant, an α-glucosidase inhibitor or a Nrf2-inducer.

17α-Estradiol Alleviates Age-related Metabolic and Inflammatory Dysfunction in Male Mice Without Inducing Feminization.

17α-Estradiol promotes ovarian aging in growth hormone receptor knockout mice, but not wild-type littermates.

17α-Estradiol alleviates high-fat diet-induced inflammatory and metabolic dysfunction in skeletal muscle of male and female mice.