Cited by 369Menopause: Health Impacts and TreatmentsThermoregulation and physiological responsesEstrogen and related hormone effects

Physiology of hot flashes

Open access
Freedman, Robert R.·2001·American Journal of Human Biology

Abstract

Hot flashes are the most common symptom of the climacteric, although prevalence estimates are lower in some rural and non-Western areas. The symptoms are characteristic of a heat-dissipation response and consist of sweating on the face, neck, and chest, as well as peripheral vasodilation. Although hot flashes clearly accompany the estrogen withdrawal at menopause, estrogen alone is not responsible since levels do not differ between symptomatic and asymptomatic women. Until recently it was thought that hot flashes were triggered by a sudden, downward resetting of the hypothalamic setpoint, since there was no evidence of increased core body temperature. Evidence obtained using a rapidly responding ingested telemetry pill indicates that the thermoneutral zone, within which sweating, peripheral vasodilation, and shivering do not occur, is virtually nonexistent in symptomatic women but normal (about 0.4 degrees C) in asymptomatic women. The results suggest that small temperature elevations preceding hot flashes acting within a reduced thermoneutral zone constitute the triggering mechanism. Central sympathetic activation is also elevated in symptomatic women which, in animal studies, reduces the thermoneutral zone. Clonidine reduces central sympathetic activation, widens the thermoneutral zone, and ameliorates hot flashes. Estrogen virtually eliminates hot flashes but its mechanism of action is not known.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/ajhb.1077

Cites

65 of 65 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

1 of the 66 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Freedman, R. R.
Affiliations
Wayne State University (US)
Corresponding author
Freedman, Robert R.
Venue
American Journal of Human Biology
Publisher
Wiley
Published
2001-05-31
Volume
13
Issue
4
Pages
453-464
ISSN
  • 1042-0533 (ISSN-L)
  • 1520-6300
OpenAlex
W2062202632
Cited by
369
References
66
Citations by year
2026: 13 · 2025: 14 · 2024: 3 · 2023: 8 · 2022: 10 · 2021: 5 · 2020: 10 · 2019: 14 · 2018: 13 · 2017: 12 · 2016: 22 · 2015: 10 · 2014: 16 · 2013: 24 · 2012: 9
FWCI
1.81
Type
journal article
Language
en
Open access
Locations
  • American Journal of Human Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (AG-05233)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Menopause: Health Impacts and Treatments
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
hot flashes, climacteric, menopause, thermoneutral zone, heat dissipation, sweating, peripheral vasodilation, clonidine, estrogen, core body temperature
MeSH terms
Body Temperature Regulation, Circadian Rhythm, Clonidine, Female, Humans, Menopause, Middle Aged, Risk Factors, Skin Temperature, Sweating, Sympatholytics, Time Factors, Estrogen Replacement Therapy, Hot Flashes

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review