Salt Intake Clinical Trial
Official title:
Factors Affecting Salt Intake in Young Adults
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.
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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