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Taste, Altered clinical trials

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NCT ID: NCT04038281 Not yet recruiting - Obesity Clinical Trials

Genetics of Bitter and Fat Taste

Start date: August 15, 2019
Phase:
Study type: Observational

Obesity is an increasing problem for adults in the UK. Diets high in fat and sugar are the major contributors to weight gain. Individual differences in taste perception are a crucial factor in determining the investigator's choice of foods and an individual's sensitivity to the either bitter or fat taste compounds has been linked to a preference for different foods including sweet and high fat foods. Previous research has not comprehensively explored the effect of both fat and bitter taste sensitivity on dietary intake and obesity status. Therefore, the aim of this study is to explore the associations between genetics, fat and bitter taste sensitivity, food preference, dietary intake and obesity measures in the adult UK population.

NCT ID: NCT03824925 Completed - Taste, Altered Clinical Trials

Efficacy of Zinc on Concurrent Chemo-radiotherapy Induced Taste Alterations

Start date: December 1, 2016
Phase: Phase 3
Study type: Interventional

Taste changes are common in cancer patients receiving concurrent chemoradiation which become a significant complaint and a cause of distress and morbidity. Loss of gustatory function further advances to malnutrition, weight loss, reduced quality of life, poor compliance and even diminished response to drug therapy. Taste is an essential sensation which serves oral intake of food and enables to prevent the ingestion of potentially harmful and poisonous substances. The sense of taste is crucial for an individual's well-being and psychological health. Taste changes may advance to reduced appetite, dietary insufficiency, food repulsion affecting body weight and anorexia further leading to impaired immunity, decline in health status and malnutrition. As taste impairment is not a life-threatening event therefore it might not be reported by some patients. Hence, this aspect is neglected despite being a common and distressing side-effect of chemoradiation. Due to the location of the cancer and the long-term effects of cancer therapies, patients with oral cavity cancers have a specially high prevalence of chemosensory disorders. Zinc is comparatively non-toxic if taken orally, and rather non-toxic in contrast to other trace metals such as manganese and iron. Zinc is an integral element in both the maintenance and repair of taste buds. It is involved in promoting the diffusion of taste stimuli to taste buds. Salivary zinc has been found in association with Gustin (carbonic anhydrase, CA VI), a zinc-metalloprotein enzyme that may be involved with providing nutrition to the human taste buds. Zinc influences the synthesis of gustin required for the growth, development, maintenance and production of taste buds and regulation of taste function. The hypothesis was: Null hypotheses: There is no difference in the taste acuity between test and control group with the administration of zinc sulfate. Alternative hypotheses: There is a difference in the taste acuity between test and control group with the administration of zinc sulfate. Thus, the present study aimed to observe changes in taste function of oral cancer patients by detection and recognition thresholds before beginning their treatment (before chemoradiation and intervention), at the end of chemoradiation and a month after and to evaluate the preventive effect of zinc sulfate on chemoradiation-induced taste changes. To the best of our knowledge, similar study has not been conducted before in our region.

NCT ID: NCT03548038 Completed - Taste, Altered Clinical Trials

Taste Changes With Bariatric Surgery

Start date: May 24, 2018
Phase:
Study type: Observational

It is commonly believed that a link exists between BMI and taste perception. One group of researchers observed that women who are obese experience reduced taste sensitivity when compared to normal-weight controls. Others have compared taste sensitivity between lean and obese subjects and found no significant differences. The inconsistencies in these studies demonstrate how much variation in taste sensitivity is possible when different factors are applied in research. Throughout several studies, one element remains constant - bariatric surgery causes appetite aversions. These changes in appetite and food preference likely have a large influence on the overall magnitude of post-surgical weight loss. Although many studies have investigated the changes in taste preference after bariatric surgery, few, if any, have focused on changes in sweet taste perception.

NCT ID: NCT03501238 Completed - Diet Habit Clinical Trials

Interaction of Salivary Proteins and Polyphenols

Start date: June 8, 2017
Phase: N/A
Study type: Interventional

Participants will be chosen through an initial sensory test to find high and low-perceivers of astringency. Selected participants will drink a chocolate milk or milk substitute beverage for one week each with washout weeks in between. At the end of each week participants will taste and rate multiple beverages for their astringency and other sensory properties. Participants will provide saliva samples weekly for proteomic analysis and (potentially) analysis of polyphenols. Participants will also be asked to provide a 24 hour dietary recall once per week. Data will be analyzed to determine if there is a relationship between polyphenol exposure, astringency ratings, and salivary protein composition.

NCT ID: NCT02617576 Withdrawn - Taste, Altered Clinical Trials

Flavoring Oral Contrast for MR Enterography

Start date: January 2016
Phase: N/A
Study type: Observational

To determine if patient satisfaction, participation, and image quality improves with flavored oral contrast for MR enterography.