Eating Peanuts for Health
- Conditions
- ObesityOverweightHyperlipidemia
- Interventions
- Other: Consumption of 42 grams of peanuts daily
- Registration Number
- NCT01886326
- Lead Sponsor
- Purdue University
- 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.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 196
- Between 18 and 50 years of age
- Weight stable (< 3 kg weight change within last 3 months)
- Constant habitual activity patterns (no deviation > 1x/wk at 30 min/session within last 3 months)
- Constant habitual diet patterns within last 3 months
- Willingness to eat all test foods (peanuts daily for 12 weeks)
- No allergy to foods provided in the study (peanuts)
- Not a daily peanut or tree nut consumer
- Not planning to change use of medications known to influence appetite or metabolism
- Not diabetic or hypertensive
- No history of gastrointestinal pathology
- Non-smoker for one year or more
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Consumption of 42 g of salted peanuts Consumption of 42 grams of peanuts daily Consumption of 42 grams of peanuts daily Consumption of 42 g of unsalted peanuts Consumption of 42 grams of peanuts daily Consumption of 42 grams of peanuts daily Consumption of 42 g of spicy peanuts Consumption of 42 grams of peanuts daily Consumption of 42 grams of peanuts daily Consumption of 42 g of honey peanuts Consumption of 42 grams of peanuts daily Consumption of 42 grams of peanuts daily Consumption of 42 g of 3 diff. varieties Consumption of 42 grams of peanuts daily Consumption of 42 grams of peanuts daily Consumption of 42 g of var. of types Consumption of 42 grams of peanuts daily Consumption of 42 grams of peanuts daily
- Primary Outcome Measures
Name Time Method 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 12 weeks Participants will rate their liking of the sample each day using a visual analog scale.
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 Outcome Measures
Name Time Method Personality Questionnaires At baseline visit Flavor attribute liking measures At baseline Compliance 12 weeks Participants will self-report compliance to study protocol using record sheets.
Appetitive Ratings 4, 8, and 12 weeks Collected on handheld computer
Consumption Parameters 12 weeks Participants will note if peanuts were eaten as a meal or snack, at what time, and with what other foods daily.
Trial Locations
- Locations (1)
Purdue University
🇺🇸West Lafayette, Indiana, United States