View clinical trials related to Diet, Healthy.
Filter by:Using a 3-arm randomized controlled trial, the investigators aim to rigorously evaluate the effects of two different taxation policies on diet quality. The first is an implicit sales tax that will be levied only on beverages in a manner that mirrors the current Kingdom of Saudi Arabia (KSA) beverage taxes and the second is an explicit Nutri-Score (NS) based tiered tax that is levied on all food and beverage products. The investigators will use an experimental online grocery store, called NUSMart, which is similar in design to commercial web-based grocery stores to test these two taxation policies. Participants will be randomly assigned to one of the following arms and asked to complete a one-time hypothetical shop. Arm 1 (Control): Participants will experience a default version of NUSMart which replicates the traditional shopping experience of online grocery stores with no FOP labels. Arm 2 (Implicit Tax): Same as Arm 1 NUSMart except that an implicit tax will be levied only on beverages: a 50% sales tax on carbonated drinks and sugar-sweetened beverages (SSBs) and 100% tax on energy drinks (milk, milk-based products, and natural fruit juice are excluded). Arm 3 (Explicit Tiered Tax): Same as Arm 1 NUSMart except that an explicit tiered tax based on (underlying) NS is levied on (sale price of) all food and beverages. NS assesses overall nutritional quality of products on the basis of 7 nutrients (calories, saturated fats, sugar, salt, fiber, protein and percentage of fruits, vegetables and nuts) from A to E (best to worst). In this arm, the investigators implement a 20% sales tax on the retail price for NS D beverages and 10% for NS D foods along with a 50% sales tax on NS E beverages and 20% on NS E foods. The investigators hypothesize the following: Hypothesis 1: Diet quality of food purchases, measured by the weighted average Nutri-Score point, will be highest in the explicit tiered tax arm, followed by the implicit tax arm, followed by the control. Hypothesis 2: Average calories, sugar, sodium, and saturated fat per serving will be lowest in the explicit tiered tax arm, followed by the implicit tax arm, followed by the control.
Systematic inflammation and lipid profiles are two major therapeutic targets for cardiovascular diseases. The effectiveness of vegan diet has been reported (doi: 10.3389/fnut.2022.807810). Aim: To compare the effectiveness of a nutritionally balanced vegan diet and a Myplate diet ((Taiwanese version) on systematic inflammation and lipoprotein subclass. Design: Randomized crossover design
The purpose of this pilot study is to compare the effectiveness of an expanded virtual educational program at modifying knowledge, self-efficacy, and behaviors when compared to traditional in-office counseling for guardians of children who are obese or overweight.
Reducing food portion size is a potential strategy to reduce energy intake. However, it remains unclear who is most susceptible to the portion size effect (PSE). There are just two studies which have examined the PSE in the context of socioeconomic position (SEP), with mixed findings. In an online trial the PSE on intended consumption of unhealthy snacks was 18-24% larger for participants of lower SEP compared to participants of higher SEP. However, in a recent laboratory study which examined the PSE on total daily energy intake, participants of lower SEP were no more susceptible to the influence of portion size on eating behaviour than participants of higher SEP. Further research is required to elucidate these divergent findings. There is also an absence of evidence examining the moderating role of subjective social status (SSS) - an individual's perceived standing in society - on the PSE. Given evidence that the subjective experience of social class may be associated with health outcomes, the present study examines whether reductions to the portion size reduces daily energy intake, and whether and how SSS (higher vs lower) moderates the PSE. In a crossover experiment, participants will be served all meals in the lab on two separate days, with the portion size of main components at breakfast, lunch and dinner manipulated (i.e. smaller on one day vs larger on the other day). All other foods offered are identical. Food intake from the portion-manipulated breakfast, lunch and dinner, as well as all other meal components (non-portion-manipulated sides, dessert, seconds, snacks, etc.) will be measured, to assess total daily energy intake (kcal).
It is known that tumors have an affinity for taking up amino acids from circulation or nearby tissues to use as a fuel source, to enhance their growth. Work in rodents has shown that when the levels of amino acids are reduced in diet, tumor growth is slowed and tumors are more susceptible to anti-cancer therapies. There are limited evidence-based dietary recommendations for cancer patients, which represents an urgent and unmet need. It is likely that reducing dietary protein will be beneficial, however this has not been tested. In advance of carrying out a study in cancer patients a study in healthy volunteers needs to be conducted to determine whether altering the amount of dietary protein, impacts the levels of amino acids (or other metabolites) in blood or the intestine. By demonstrating that altering dietary protein can alter the metabolome of healthy individuals, it will provide the information needed to reduce protein intake in cancer patients in future studies.
This project will examine the impact of an infant and young child feeding (IYCF) voice messaging intervention delivered to mothers and fathers in Senegal on the consumption of a minimum acceptable diet and anemia prevalence in their children.
The role of diet in preventing hypertension and cardiovascular diseases in African Americans, who have a much higher risk of developing these diseases, is not well understood. Therefore, this project will investigate whether African Americans following a 100% plant-based diet have more optimal blood pressure, vascular function, and blood lipid profiles, along with lower systemic inflammation relative to African Americans following a typical American diet.
This randomized controlled trial will assess the effects of External Cues focused messaging (i.e., government recommendations of MyPlate) compared to Internal Cues focused messaging (i.e., intuitive eating). The investigators will collect data on within-person changes in psychological (e.g. affect) and physiological (e.g. heart rate variability) outcomes in female college students. Participants will be randomly assigned to one of two study conditions. In condition one, participants will view a five-minute video focusing on traditional nutrition education principles. In condition two, participants will view a five-minute video focusing on intuitive eating principles.
The Snackability was a two-arm, 12-week randomized control trial among 272 overweight college students. Participants were equally randomized to the intervention group (access to the app) or control group (no access to the app). Diet and weight were assessed at baseline, at 4 weeks, at 8 weeks, and at 12 weeks.
This study will comprise a randomized controlled, counter-balanced, cross-over trial to evaluate the independent effects of a high cholesterol (high egg), low saturated fat diet and a high saturated fat, low cholesterol diet on blood lipids. Evaluations also include analysis of physical activity as there is emerging evidence that the lutein and zeaxanthin in egg yolk may increase physical activity levels by crossing the blood-brain barrier and altering neuronal function. The study will also investigate effects on a number of novel lipoprotein parameters (particle size and particle concentrations).