Actively Recruiting

Phase Not Applicable
Age: 45Years - 74Years
FEMALE
Healthy Volunteers
ID07070635

The Effect of the Fermented Seaweed Enriched Abertay Tea on Vascular Function and Markers of Cardiovascular Risk During Menopause

Led by Abertay University · Updated on 2025-07-17

44

Participants Needed

1

Research Sites

4 weeks

Total Duration

On this page

Sponsors

A

Abertay University

Lead Sponsor

O

Oshun Labs Ltd

Collaborating Sponsor

AI-Summary

What this Trial Is About

Researchers are studying how a special English Breakfast tea enriched with fermented brown seaweed might help improve cardiovascular health in postmenopausal women. The study focuses on factors like blood pressure, vascular function, and markers of cardiovascular risk because cardiovascular risk increases after menopause. Brown seaweed contains antioxidants, pigments, and fiber that may benefit heart health. Participants will be randomly assigned to drink either the enriched tea or a regular control tea three times a day for eight weeks. Each tea bag contains 3 grams of tea, with the enriched version also having 1 gram of fermented seaweed. They will prepare each cup by brewing the tea in boiling water for three minutes. The study uses a double-blind design, so neither participants nor researchers know which tea is given until the trial ends. Participants will attend two visits, one at the start and one after eight weeks, to measure blood pressure continuously and assess vascular function, blood lipids, insulin resistance, and menopause symptoms. Researchers will track compliance through tea logs and leftover tea bag counts, and contact participants regularly to support adherence. The total study duration for each participant is about eight weeks, with detailed health assessments performed before and after the intervention.

CONDITIONS

Brief Title

Abertay Tea for Cardiovascular Health During Menopause

Who Can Participate

Age: 45Years - 74Years
FEMALE
Healthy Volunteers

Eligibility Criteria

Eligible

You may qualify if you...

  • Postmenopausal status with no menstrual period for at least 12 months
  • Regular tea drinkers consuming tea at least once a week
  • Willingness to drink 3 cups of English Breakfast tea daily for 8 weeks
  • Body mass index between 18.5 and 39.99 kg/m2
  • Female aged between 45 and 74 years
Not Eligible

You will not qualify if you...

  • History of cardiovascular disease, diabetes, or kidney, liver, or bowel disease
  • Fasting glucose level of 6.1 mmol/L or higher
  • Cancer diagnosis within the past year
  • Known platelet or blood clotting disorders
  • Gastrointestinal disorders or use of drugs affecting digestion or nutrient absorption
  • Recent use of cholesterol-lowering, antiplatelet, or blood-thinning medications
  • Thyroid function impairment
  • Current smoking or vaping
  • Weekly alcohol intake exceeding 14 units
  • Use of hormone replacement therapy within the past 3 months
  • Participation in another clinical trial within the past 3 months
  • Allergy or intolerance to crustaceans or iodine

AI-Screening

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

1 visit (in-person)

Treatment

Duration - 8 weeks

Participants consume 3 cups of either the fermented seaweed enriched tea or control tea daily for 8 weeks without changing other habits.

2 visits (baseline and endpoint, both fasting, in-person) and regular compliance contacts every 2 weeks

Trial Site Locations

Total: 1 location

1

Abertay University

Dundee, United Kingdom, DD1 9HG

Actively Recruiting

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Research Team

S

Sarah C Cottin, PhD

V

Vishnu Selvaraju, PhD

How is the study designed?

Study Type

INTERVENTIONAL

Masking

TRIPLE

Allocation

RANDOMIZED

Model

PARALLEL

Primary Purpose

PREVENTION

Number of Arms

2

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