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Exploring food choice across the menstrual cycle

Exploring variation in food choice in heavy menstrual bleeding populations

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN88119879
Enrollment
65
Registered
2025-12-02
Start date
2025-12-22
Completion date
Unknown
Last updated
2026-09-14

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

Conditions

Individuals who report their menstrual bleeding to meet the criteria specified for heavy menstrual bleeding. Urological and Genital Diseases

Interventions

This study utilises an observational design to assess food choice across the menstrual cycle, with all participants completing the same study procedure. Due to the nature of the study, details pertai

Sponsors

University of Bristol
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1. Are aged 18-45 2. Are a UK resident 3. Are familiar with, and willing to consume, the following test foods: steak, lamb, chicken, beef burger, macaroni cheese, pizza, roast beef, battered cod, beef bolognese, pork sausages, gammon steaks, halloumi 4. In line with the above, currently consume meat within the diet 5. Are experiencing heavy menstrual bleeding, defined in this study as experiencing at least two of the following over the past year: - Flooding through clothes or onto bedding - A need to change sanitary products every 2 hours or less (or using 12+ sanitary products a day) - Need for double sanitary protection (e.g., a tampon and sanitary towel) - Passing large blood clots 6. Have a menstrual cycle that meets the following: - Have experienced at least 8 menstrual bleeds (periods) in the past year - Have a menstrual bleed of at least 3 days in duration - A duration of at least 12 days between menstrual bleeds - Not experiencing bleeding in between menstrual bleeds 7. Own a smartphone with an internet connection and either Google play or the App store, and be willing to download the Samply research app

Exclusion criteria

Exclusion criteria: 1. Have a diagnosis of PCOS (polycystic ovary syndrome) or endometriosis 2. Are currently pregnant or trying to conceive 3. Are currently experiencing an eating disorder or disordered eating 4. Due to use of at home finger-prick blood testing kits, have: - A bleeding disorder or use of medication which increases the risk of bleeding - A skin disorder or condition that may result in slower healing - Impaired circulation, particularly in relation to the upper limbs - A known condition or taking medication that elevates the risk of infection - A known blood-borne disease (e.g., hepatitis B/C, Human Immunodeficiency Virus) - A fear of blood - A history of fainting, an arrhythmia, or any other applicable symptoms

Design outcomes

Primary

MeasureTime frame
Food choice measured using food choice tasks at 4 points across the menstrual cycle (detailed outcomes of interest will be revealed when data collection has been completed)

Countries

England, United Kingdom

Contacts

Public ContactJody Salton
jody.salton@bristol.ac.uk0117 455 8806

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Sep 19, 2026