Pecans may lower cholesterol and curb heart disease risk
NCT ID NCT07696403
First seen Jul 10, 2026 · Last updated Aug 12, 2026 · Updated 4 times
Summary
This study tests whether eating a daily serving of pecans for 12 weeks can improve cholesterol levels and other markers of heart-disease risk. Adults aged 25–75 who are overweight or have borderline-high cholesterol will either add pecans to their diet or stick with their usual eating habits. Researchers will measure changes in blood fats, appetite hormones, and other health indicators to see if this simple dietary change makes a difference.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Pecans
- What this could lead to
- If it works, this could show that a simple dietary change — eating a handful of pecans daily — helps lower cholesterol and reduce heart-disease risk.
- What could go wrong
- This is a small, short-term study (90 people, 12 weeks). Results may not apply to everyone, and the effect might be too small to matter in real life.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 90 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2027
An estimate. Start dates often move.
- Expected to finish
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Feb 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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25 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * 25-75 year-old men and women at increased risk for cardiovascular disease. Increased risk for cardiovascular disease will be defined by either elevated cholesterol profiles -or- overweight/obesity. * Elevated cholesterol profiles will be defined as: * "Borderline High" and/or "at risk" in two or more of the following variables (total cholesterol: 180-239 mg/dL, LDL cholesterol 110-159 mg/dL, triglycerides 130-199 mg/dL) --or-- "High" in total cholesterol (240 mg/dL and higher), LDL (160 mg/dL or higher), or triglycerides (between 200-350 mg/dL). * Overweight/obesity will be defined by body mass index (overweight \> 28 kg/m2 or obesity 30 kg/m2 or greater). Exclusion Criteria: * Probable familial hypercholesterolemia, defined by: total cholesterol greater than 290 mg/dL or LDL levels greater than 190 mg/dL plus a family history of myocardial infarction (MI) before 50 years of age in a 2nd-degree relative or below age 60 in a 1st-degree relative. * Women on hormone replacement therapy less than 2 years. * Women who are pregnant or nursing * Individuals who regularly exercise more than 3h/w * Weight gain or loss of more than 5% body weight in the past 3 months * Plans to begin a weight loss/exercise regimen during the trial * History of medical or surgical events that could affect digestion or swallowing * Gastrointestinal surgeries, conditions, or disorders * Any chronic diseases (including moderate to severe asthma, chronic lung disease, and kidney disease) * Metabolic disease * Atherosclerosis * Previous MI or stroke * Cancer * Fasting blood glucose levels greater than 126 mg/dL * Blood pressure greater than 180/120 mmHg * Medication use affecting digestion, absorption, or metabolism (e.g. thyroid meds), lipid-lowering medications, medications for diabetes, steroid/hormone therapies, or current antibiotic cycles * Medically prescribed or special diets * Food allergies (specific to the foods in the study, including tree nuts, dairy, gluten, palm oil, and coconut oil) * Fish oil supplements * Individuals who regularly consume nuts and/or nut butter (defined as consumption of \>2 servings (\~56g) of tree nuts, nuts, or nut butter (e.g., peanut butter, almond butter) per week * Excessive alcohol use (greater than 3 drinks/day for men; greater than 2 drinks/day for women) * Tobacco or nicotine use * Underweight BMI (\<18.5 kg/m²) * Individuals who have donated blood or plasma in the past 2 weeks * Anemia or hemoglobin levels \<13.0 g/dL (men) or \<12.5 (women)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Georgia
Athens, Georgia, 30602, United States
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