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DysbiosisNCT07636850

Almonds, Gut Microbiome and Kids

A study testing Creamy Richards 100% Almonds! Creamy Natural Almond Butter and Cadbury Milk Chocolate Spread in people with Dysbiosis and Cardiometabolic Health Indicators, run by Florida State University at 1 site in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This 8-week parallel-arm randomized controlled trial (N=70; ages 6-13) will determine the impact of daily almond butter consumption on gut microbiome composition and function, intestinal barrier integrity, and cardiometabolic health in school-aged children. Read more about this study

Who is it for?
Ages 6 to 13 yearsHealthy volunteers can take part
Conditions the study is for
Dysbiosis, Cardiometabolic Health Indicators
What is being tested?
Creamy Richards 100% Almonds! Creamy Natural Almond Butter and Cadbury Milk Chocolate Spread
Could I receive a placebo?
No, everyone receives an active treatment
How many people
70 participants
Where
1 siteUnited States
Study dates
1 Oct 2026to 31 Dec 2028
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 6 to 13 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Enrolled in elementary or middle school (grades 1-8)
  • Aged 6-13 years old
  • Ability to speak and read in English

Who cannot join

  • Intake of antibiotics in the last 3 months
  • Intake of pre/pro/postbiotics in the last 3 months
  • Food allergy to study foods
  • Any allergy to nuts or almonds
  • Any allergy to the isocaloric snack (chocolate or wheat)
  • Regular consumption of nuts or almonds greater than 2 servings / week
  • Gastrointestinal disease (ulcerative colitis, Crohn's disease, diverticulosis, peptic ulcers, small intestinal bacterial overgrowth, short bowel syndrome, irritable bowel syndrome, gastroesophageal reflux disease), neurological (multiple sclerosis, meningitis, recent stroke) or endocrine disorders (uncontrolled thyroid disorders, growth hormone disorders, adrenal gland disorders, uncontrolled diabetes - A1C > 9%).

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Rayven Nairn, MS, RD contact

850-644-1829

rsn25b@fsu.edu

FSU College of Education, Health and Human Services contact

850-644-1829

healthandhumansciences@fsu.edu

United States1 site, 1 recruiting
  • The Gut Biome Lab

    Tallahassee, Florida, 32306

    Ravinder Nagpal, PhD, 850-644-1829, rnagpal@fsu.edu

    Cole Patoine, MS, RD

    Recruiting

Other trials in United States

About this study

Official title: Nutritional Impact of Almond Butter on Gut Microbiome and Cardiometabolic Health in School-Aged Children: A Novel and Timely Pilot Randomized Controlled Trial

This 8-week parallel-arm randomized controlled trial (N=70; ages 6-13) will determine the impact of daily almond butter consumption on gut microbiome composition and function, intestinal barrier integrity, and cardiometabolic health in school-aged children. Participants will be randomized to either a once-daily snack of personalized-portion almond butter (ALB; 16g, Creamy Natural Almond Butter) or an isocaloric nut-free chocolate spread control (CTL; 16g, Cadbury Milk Chocolate), each served on two plain unsalted saltine crackers, added to their habitual diet. The primary outcomes include oro-gut microbial composition and diversity, gut microbial functional capacity and metabolomics (SCFAs, bile acids, amino acid metabolites), and intestinal barrier integrity. Secondary outcomes include fasting cardiometabolic markers, systemic inflammation, appetite-regulatory and metabolic hormones, and sleep-related biomarkers. Feasibility, adherence (weekly logs; serum α-tocopherol), and precision nutrition potential will also be assessed, with stratified analyses by age, sex, BMI, ethnicity, and pubertal stage.

This pilot trial will generate the first multi-omics characterization of almond butter's effects on the gut-immune-metabolic axis in children.

Being tested
Creamy Richards 100% Almonds! Creamy Natural Almond Butter, Cadbury Milk Chocolate Spread
Keywords
gut, gut microbiome, children, pediatric, sleep quality, almonds, nuts, almond butter, metabolomics
Medical subject headings
Dysbiosis, Sleep Initiation and Maintenance Disorders

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Creamy Richards 100% Almonds! Creamy Natural Almond ButterOther

    Also called ALB, Almond Butter

    Almond Butter (ALB) Group: Participants in this group will receive a daily snack consisting of a personalized portion of smooth natural almond butter (Creamy Richards 100% Almonds! Creamy Natural Almond Butter) spread between two plain unsalted saltine crackers (Unsalted Tops Premium Saltine Crackers). The amount of almond butter will be limited to 16g per two crackers; additional crackers will be provided if the personalized portion exceeds this limit.

  • Cadbury Milk Chocolate SpreadOther

    Also called CTL, Isocaloric spread, Control

    Control (CTL) Group: Participants in this group will receive a daily snack consisting of an isocaloric amount of a nut-free, vegetable oil-based chocolate spread ("Cadbury Milk Chocolate") spread between two plain unsalted saltine crackers ("Unsalted Tops Premium Saltine Crackers"). Similar to the peanut butter group, the chocolate spread will be limited to 16g per two crackers, with additional crackers provided if needed.

Study groups in NCT07636850
Study groupRoleWhat they receive
Almond Butter ConditionExperimentalParticipants in the ALB group will maintain their habitual diet supplemented with a once-daily snack of smooth natural almond butter (Creamy Richards 100% Almonds! Creamy Natural Almond Butter) spread between two plain unsalted saltine crackers (Unsalted Tops Premium Saltine Crackers), with a maximum of 16g of almond butter per two crackers. The daily portion of almond butter will be individualized to provide 20% of each participant's estimated daily caloric needs, calculated using Dietary Guidelines for Americans (DGA) age- and sex-specific energy requirements.
Receives: Other: Creamy Richards 100% Almonds! Creamy Natural Almond Butter
Control Snack ConditionActive comparatorControl (CTL) Group: This condition includes a normal diet supplemented daily with an isocaloric amount of a nut-free, vegetable oil-based chocolate spread (Cadbury Milk Chocolate) also sandwiched between two plain unsalted saltine crackers (Unsalted Tops Premium Saltine Crackers), with the same 16g limit per two crackers. The quantity of chocolate spread provided daily will be equivalent to 20% of each participant's individual daily caloric intake. These caloric needs will be established using Dietary Guidelines for Americans (DGA) based on the participant's age and gender
Receives: Other: Cadbury Milk Chocolate Spread

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Gut Microbiome Alpha and Beta Diversity Measured by 16S rRNA Gene Sequencing of Fecal Samples

    Freshly voided fecal samples will be collected and DNA extracted using the PowerFecal Pro DNA kit. The V3-V4 hypervariable region of the bacterial 16S ribosomal RNA gene will be PCR-amplified and sequenced. Sequences will be processed using the QIIME2 software package to assess microbial diversity (alpha and beta diversity) and taxonomic composition.

    Measured: Baseline (day 0), midpoint (week 4) and endpoint (week 8)

  2. Change in Oral Microbiome Alpha and Beta Diversity Measured by 16S rRNA Gene Sequencing of Oral Swabs

    Oral biofilm swabs (omniswab - tongue, palate, cheek/lip lining, gums) and unstimulated saliva will be collected in 5ml tubes. DNA will be extracted and the V3-V4 region of the bacterial 16S ribosomal RNA gene PCR-amplified and sequenced. Sequences will be processed using the QIIME2 software package to assess oral microbial diversity (alpha and beta diversity) and taxonomic composition.

    Measured: Baseline (day 0) and Endpoint (week 8)

  3. Change in Fecal Metabolome

    The endpoint of fecal metabolomics will be assessed by collecting fecal samples from participants at the beginning and end of the study. These samples will be analyzed using advanced techniques, such as mass spectrometry, to identify and quantify various metabolites present in the feces. The changes in the levels of specific metabolites, which can reflect shifts in gut microbiome composition and metabolic health, will be compared between pre- and post-intervention periods. This analysis will help determine how regular almond butter intake affects metabolic processes and gut health.

    Measured: Baseline (day 0) and endpoint (week 8)

  4. Change in Serum Metabolome

    The endpoint of serum metabolomics will be assessed by collecting blood serum from participants at the beginning and end of the study. These samples will be analyzed using advanced techniques, such as mass spectrometry, to identify and quantify various metabolites present in the serum. The changes in the levels of specific metabolites, which can reflect shifts in gut microbiome composition and metabolic health, will be compared between pre- and post-intervention periods. This analysis will help determine how regular almond butter intake affects metabolic processes and gut health.

    Measured: Baseline (day 0) and endpoint (week 8)

Secondary outcomes (17)
  1. Change in Gut Transit Time

    Evaluate changes in gut transit time after almond butter or control snack consumption from baseline to final analysis, using a blue-dye capsule.

    Measured: Baseline (day 0) and endpoint (week 8)

  2. Change in Waist/Hip Circumference

    Evaluate changes in waist and hip circumference (centimeters), as well as waist-hip ratio at each study visit before, after and during almond butter consumption, compared to a control snack.

    Measured: Baseline (week 0), midpoint (week 4), and endpoint (week 8)

  3. Change in Habitual Dietary Intake

    Assess changes in habitual dietary intake via 3-day food logs, analyzed using nutrient analysis software (NDSR).

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  4. Change in Body Weight

    The endpoint of body weight (kg) will be measured at each visit to assess changes in weight before and after 8 week consumption of almond butter or a control snack spread.

    Measured: Baseline (day 0), midpoint (week 4), endpoint (week 8)

  5. Change in Urinary Melatonin

    Changes in melatonin (urine metabolite 6-sulphatoxymelatonin) will be assessed before, during and after 8-week consumption of almond butter or control snack spread.

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  6. Change in Body Fat Percentage

    Evaluate changes in body composition, including fat mass, expressed as a percentage of total weight (%). This is assessed using a bioimpedance spectroscopy device (ImpediMed SBF7) at each study visit before, after and during almond butter or control snack consumption.

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  7. Change in Lipid Profiles

    Relevant biomarkers are to be collected via venous blood samples to determine changes in cardiometabolic health including HDL, LDL, total cholesterol, and triglycerides. All will be expressed in units of mg/dL.

    Measured: Baseline (day 0) and endpoint (week 8)

  8. Change in Biomarkers of Inflammation

    Relevant biomarkers are to be collected via venous blood samples to determine changes in inflammation, including but not limited to C-reactive protein (CRP), IL-1 (Interleukin-1), IL-1 beta, IL-6, IL-10, IL-17, IL-23, Tumor Necrosis Factor Alpha (TNF-a), Interferon-gamma (IFN-Y). All will be expressed in units of pg/mL.

    Measured: Baseline (day 0) and endpoint (week 8)

  9. Change in Biomarkers of Intestinal Barrier Function

    Relevant biomarkers are to be collected via venous blood samples to determine changes in intestinal barrier function including LPS (lipopolysaccharides), LBP (lipopolysaccharide binding protein), CD14, Secretory IgA. All will be expressed in units of pg/mL.

    Measured: Baseline (day 0) and endpoint (week 8)

  10. Change in Lean Mass

    Evaluate changes in body composition, including lean mass (kg). This is assessed using a bioimpedance spectroscopy device (ImpediMed SBF7) at each study visit before, after and during almond butter or control snack consumption.

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  11. Change in Biomarkers of Appetite

    Relevant biomarkers are to be collected via venous blood samples to determine changes in appetite including Insulin, Glucagon, glucagon-like peptide 1 (GLP-1), Adiponectin, Leptin, Ghrelin, and Peptide YY. All will be expressed in units of pg/mL.

    Measured: Baseline (day 0) and endpoint (week 8)

  12. Change in Rested, Seated Blood Pressure

    This outcome measure will measure changes in blood pressure taken at rest in the seated position at each visit, before during and after almond butter or control snack consumption, expressed as systolic over diastolic blood pressure in units of millimeters of mercury (mmHg).

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  13. Change in Fasting Blood glucose

    Venous blood samples will be collected to determine changes in fasting blood glucose (expressed as mg/DL).

    Measured: Baseline (day 0) and endpoint (week 8)

  14. Dietary Adherence

    Assess adherence to the intervention and control snack throughout the study, as determined by dietary adherence logs kept by the participants each week. Adherence is expressed as a daily percent (%) consumption of their assigned snack

    Measured: Daily, baseline (day 0) through endpoint (week 8)

  15. Change in Total Body Water

    Evaluate changes in body composition, including, total body water (L). This is assessed using a bioimpedance spectroscopy device (ImpediMed SBF7) at each study visit before, after and during almond butter or control snack consumption.

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  16. Change in Intracellular Fluid

    Evaluate changes in body composition, including intracellular fluid (L). This is assessed using a bioimpedance spectroscopy device (ImpediMed SBF7) at each study visit before, after and during almond butter or control snack consumption.

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

  17. Change in Extracellular Fluid

    Evaluate changes in body composition, including extracellular fluid (L). This is assessed using a bioimpedance spectroscopy device (ImpediMed SBF7) at each study visit before, after and during almond butter or control snack consumption.

    Measured: Baseline (day 0), midpoint (week 4), and endpoint (week 8)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Jun 2026
  2. Study start1 Oct 2026 (estimated)
  3. Primary completion31 Oct 2028 (estimated)
  4. Study completion31 Dec 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
70 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07636850
Sponsor's protocol ID
STUDY00007355
Status last verified
May 2026
First submitted
1 Jun 2026
Last updated
15 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Deidentified IPD will not be retain past three years, at the time of this submission the researchers does not plan to make IPD available

Questions about this trial

What is this clinical trial studying?

A study testing Creamy Richards 100% Almonds! Creamy Natural Almond Butter and Cadbury Milk Chocolate Spread in people with Dysbiosis and Cardiometabolic Health Indicators, run by Florida State University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 15 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Rayven Nairn, MS, RD (850-644-1829, rsn25b@fsu.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Gut Microbiome Alpha and Beta Diversity Measured by 16S rRNA Gene Sequencing of Fecal Samples (time frame: Baseline (day 0), midpoint (week 4) and endpoint (week 8)). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Sep 2026.

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