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Factors Affecting Salt Intake in Young Adults

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT03871374
Recruitment Status : Not yet recruiting
First Posted : March 12, 2019
Last Update Posted : March 12, 2019
Information provided by (Responsible Party):
St Mary's University College

Brief Summary:
High salt intake is one of the key risk factors for development of high blood pressure and one of the main contributors to cardiovascular disease (CVD) mortality. Despite the efforts to reduce the intake of salt in the UK, current intake still exceeds the recommended values. It is evident that better understanding of this behaviour is necessary to be able to design more effective CVD prevention strategies. This study aims to explore the determinants of salt intake with the focus on genetics, salt taste perception and salt knowledge.

Condition or disease
Salt Intake

Detailed Description:

Hypertension is a major cause of cardiovascular disease (CVD) and overall mortality. High dietary salt intake is a major risk factor for hypertension estimated to be responsible for one in ten deaths from CVD events. Salt consumption worldwide and in the UK exceeds the recommendations. One of the main determinants of food intake, and potentially salt, is taste which may be genetically determined. Research exploring the associations between genetics, salt taste and salt intake is scarce. Better understanding of these associations would be of specific interest in younger populations as it has been shown that it is the young adults that have higher preference for salty taste and consequently salt intake. Therefore, the aim of this study is to explore the associations between genetics, salt taste perception and salt intake in young UK adults.

One hundred participants (18-35 years) will be recruited. Salt taste thresholds will be identified using the British Standards Institution sensory analysis method (BS ISO 3972:2011) and preference for salty taste by rating the pleasantness and bitterness of six tomato soups with differing salt concentrations. Salt intake will be measured using five step multiple pass 24-hour recall completed via online platform (Online surveys) for one day of the week and one weekend day. Participants will be genotyped for genetic variants in the SCNN1B and TRPV1 genes coding for ion channels expressed in taste cells.

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Study Type : Observational
Estimated Enrollment : 100 participants
Observational Model: Other
Time Perspective: Cross-Sectional
Official Title: Factors Affecting Salt Intake in Young Adults
Estimated Study Start Date : March 15, 2019
Estimated Primary Completion Date : September 1, 2019
Estimated Study Completion Date : September 1, 2019

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Sodium

Primary Outcome Measures :
  1. Salt intake [ Time Frame: 2 days observation ]
    Dietary salt intake - two 24-hour recalls

Biospecimen Retention:   Samples With DNA
Saliva samples

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 35 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
Hundred participants will be recruited based on their age and health status. In addition, this number is required to reach the adequate number of participants that has the genetic variation of interest (TRPV1 and SCNN1B genes).

Inclusion Criteria:

- Males or females, aged 18-35 years and healthy.

Exclusion Criteria:

  • Current stage 1 or 2 hypertension
  • Current or recent (less than one month prior to screening visit) use of antihypertensive medications or medications that affect BP
  • Secondary hypertension
  • History of cardiovascular disease, including myocardial infarction, congestive heart failure, stroke, and peripheral arterial disease
  • Chronic kidney failure
  • Peptic ulcer disease requiring treatment during the previous two years
  • Currently pregnant women
  • Underweight (BMI<18.5 kg/m2) and obese (BMI>30 kg/m2)
  • Currently adhering to a low sodium diet
  • Any illness that permanently alters taste
  • Inability or unwillingness to participate or sign informed consent form
  • Food allergy

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03871374

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United Kingdom
St Mary's University
London, United Kingdom, TW14SX
Sponsors and Collaborators
St Mary's University College
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Responsible Party: St Mary's University College Identifier: NCT03871374    
Other Study ID Numbers: SMEC_2018-19_007
First Posted: March 12, 2019    Key Record Dates
Last Update Posted: March 12, 2019
Last Verified: March 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No