Brief Summary

Evidence is accumulating that peanut consumption confers health benefits, such as reduction of cardiovascular disease risk and possibly diabetes risk (Jenkins et al., 2008; Mattes et al., 2008). However, peanuts are a high fat, energy dense food and concerns about weight gain are widespread. Although research indicates that other characteristics of peanuts offset these properties, and that peanuts may be incorporated into diets without posing a threat to weight gain (Mattes et al., 2008), concern remains among policymakers, healthcare providers, and consumers. Furthermore, worry exists that eating salted peanuts may elevate blood pressure and that eating honey-roasted peanuts make elevate blood sugar. These fears create substantial obstacles to increased peanut consumption. Recommendations to increase peanut consumption may be made, but if they are not followed, there will be no impact on health. Additional knowledge is needed on: (1) the acceptability of peanuts consumed on a chronic basis, (2) the chronic intake of moderate levels of peanuts and body weight, and 3) the effects of peanuts on blood pressure and blood sugar. The proposed research will examine the acceptability of long-term inclusion of a single form versus varied forms of peanuts in the diet. It is expected that responses will be varied among individuals with different personality characteristics (e.g., prefer sweet versus savory foods, hedonic versus non-hedonic eaters). A better understanding of how different segments of the population choose to include peanuts in their diet and how to optimize long-term consumption should provide insights for better marketing and improved health. Furthermore, it is anticipated that eating salty peanuts will not raise blood pressure and that eating honey-roasted peanuts will not raise blood sugar. Documenting this will add credibility to the evidence that peanuts do not cause weight gain, as well as reinforce recommendations to increase peanut consumption for their health benefits.

Trial Health

On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment

196

participants targeted

Target at P75+ for not_applicable obesity

Timeline

Completed

Started Feb 2010

Typical duration for not_applicable obesity

Geographic Reach

1 country

1 active site

Status

completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

2.2 years study duration

Study Start

First participant enrolled

February 1, 2010

Completed

2.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2012

Completed

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2012

Completed

1.1 years until next milestone

First Submitted

Initial submission to the registry

June 19, 2013

Completed

6 days until next milestone

First Posted

Study publicly available on registry

June 25, 2013

Completed

Last Updated

June 25, 2013

Status Verified

June 1, 2013

Enrollment Period

2.2 years

First QC Date

June 19, 2013

Last Update Submit

June 21, 2013

Conditions

Obesity Overweight Hyperlipidemia

Keywords

Obesityenergy balancevarietynut intake

Outcome Measures

Primary Outcomes (9)

Change in Weight
2, 4, 6, 8, 10, and 12 weeks
Change in Blood Lipids
4, 8, and 12 weeks
Change in Blood Pressure
2, 4, 6, 8, 10, and 12 weeks
Change in Hedonics of peanut consumption
Participants will rate their liking of the sample each day using a visual analog scale.
12 weeks
Change in Body Composition
2, 4, 6, 8, 10, and 12 weeks
Change in Fasting Blood Glucose
4, 8, and 12 weeks
Change in Cortisol
4, 8, and 12 weeks
Change in Insulin
4, 8, and 12 weeks
Change in Pulse
2, 4, 6, 8, 10, and 12 weeks

Secondary Outcomes (5)

Personality Questionnaires
At baseline visit
Flavor attribute liking measures
At baseline
Compliance
12 weeks
Appetitive Ratings
4, 8, and 12 weeks
Consumption Parameters
12 weeks