ClinicalTrials.gg
Status unknownNCT05245825LINAPREDUpdated Feb 9, 2023

Flaxseed Supplementation in Prediabetic Adults (LINAPRED)

An interventional study of Flaxseed and Dietary plan in Prediabetic State, sponsored by Centro Universitario de Ciencias de la Salud, Mexico. Status unknown at 1 site in Mexico. Open to participants aged 30 Years to 59 Years. Per ClinicalTrials.gov, last updated 2023-02-09.

Sponsored by Centro Universitario de Ciencias de la Salud, Mexico · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Feb 2023), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
96
Allocation
Randomized
Ages
30 Years to 59 Years
Sex
All
01

Study summary

Prediabetes is the term used to describe the condition where blood glucose level is higher than normal but lower than the diagnosis criteria of type 2 diabetes mellitus (T2DM). This condition confers a high risk for the development of T2DM and other diseases. Prediabetes could be reversible with lifestyle modifications, which include medical-nutrition therapy. Within these modifications, a healthy diet high in fiber and sources of alpha-linolenic acid is recommended. Flaxseed is a seed that is considered a functional food because it can provide health benefits due to its high content of fiber, alpha-linolenic acid, and lignans, these components could improve glycemic control in prediabetes patients by different mechanisms. The purpose of this study is to assess the effect of flaxseed on glycemic control in prediabetic adults.

Read the detailed description

Prediabetes is a condition that increases the risk of T2DM and other diseases, its prevalence increases year after year despite being a reversible condition through lifestyle changes, diet, and medication. Therefore, it is important to find new strategies that, together with the known treatments, help to improve glycemic control in people with prediabetes and thus their risk of developing TDM2. Among these strategies may be the consumption of flaxseed, one of the main sources of alpha-linolenic acid (ALA), an omega-3 fatty acid, lignans, and fiber.

This open-label randomized clinical trial will include, prior informed consent, 96 men and women with prediabetes, subjects will be allocated in two groups, the intervention group or the control group. The intervention group will receive 30 g per day of ground flaxseed dissolved in water, (15 g in the morning and 15 g in the night), they will also be provided with a dietary plan. The Control group will not receive any supplementation, only a dietary plan controlled in alpha-linolenic acid.

The intervention will last 12 weeks; during this time, all patients will be scheduled every 2 weeks for follow-up visits. During the follow-up visits, subjects will be evaluated for changes in gastrointestinal symptoms, and adherence to supplementation, which will be assessed by a daily record, and the return of empty or unopened bags of flaxseed.

Every month, all subjects will undergo anthropometric, clinical, dietary, and biochemical evaluations that include measurements of body weight, body composition, waist, and hip circumferences, blood pressure, physical activity, quality of food intake, dietary intake, fasting plasma glucose, hemoglobin A1C, insulin, LDL-C, HDL-C, triglycerides, and total cholesterol; an oral glucose tolerance test will be performed at baseline and the end of the study to each subject.

At the end of the study, the obtained information will be shared with the scientific community to provide a possible food-based strategy for prediabetic adults in addition to the already known prediabetes treatment. All participants of the study will be beneficiated with free nutritional, anthropometric, and biochemical assessments.

02

Conditions studied

  • Prediabetic State

Keywords

  • Flax
  • Flaxseed
  • Linseed
  • Linum usitatissimum
  • Glycemic Control
  • Glycated Hemoglobin
  • Hemoglobin A1c
  • Glucose Tolerance Test
  • Blood glucose
  • Insulin resistance
03

In context

Prediabetic State

918 studies on the registry are indexed under Prediabetic State; 232 are open to participants now.

This study's planned enrollment of 96 is above the median of 62 across 762 interventional studies indexed under Prediabetic State.

Browse Prediabetic State studies →

Lead sponsor

Centro Universitario de Ciencias de la Salud, Mexico is the lead sponsor of 27 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
30 Years to 59 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients who agree to participate in the study once they have read and signed the
  • Men and women
  • Fasting glucose levels between 100 and 125 mg/dl
  • Age 30-59 years
  • Stable weight in the last 3 months (no more than 5% weight change)

Exclusion criteria

Exclusion Criteria:

  • Fasting glucose \<100 and >125 mg/dl
  • Anemia
  • Consumption of drugs that may modify glucose levels
  • Consumption of flaxseed, chia, or omega-3, three months before the study
  • Alternative diets (vegetarian, vegan, ketogenic, etc.)
  • Pregnancy and breastfeeding
  • Allergy or intolerance to flaxseed
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
96 participants (estimated)

Study arms

  • Experimental
    Flaxseed and dietary plan

    30 g of ground flaxseed daily and a dietary plan

    Other: Flaxseed

  • Other
    Control

    Dietary plan controlled in alpha-linolenic acid consumption

    Other: Dietary plan

Interventions

  • OtherFlaxseed

    A total of 30 g of ground flaxseed per day divided into two portions of 15 grams each, subjects will be asked to take 15 g in the morning and 15 g in the night dissolved in 400 ml of water. They will receive a dietary plan with a distribution of 20-30% of protein, 25-30% of lipids, and 40 to 45% of carbohydrates.

  • OtherDietary plan

    Dietary plan with a distribution of 20-30% of protein, 25-30% of lipids, and 40 to 45% of carbohydrates, controlled consumption of alpha-linolenic acid (no more than 6.8 g/day, the amount provided by 30 g of flaxseed).

06

What researchers measure

Primary outcomes

  1. Fasting plasma glucose

    Changes in plasma glucose concentration after the intervention (mg/dL)

    Time frame: 12 weeks

  2. 2h-plasma glucose

    Changes in 2h-plasma glucose concentration after an oral glucose tolerance test after the intervention (mg/dL)

    Time frame: 12 weeks

  3. Hemoglobin A1C

    Changes in hemoglobin A1C after the intervention (%)

    Time frame: 12 weeks

Secondary outcomes

  1. Insulin

    Changes in insulin concentration after the intervention (mUI/L)

    Time frame: 12 weeks

  2. Insulin resistance

    Changes in insulin resistance after intervention assessed by the Homeostasis Model Assessment of Insulin Resistance (HOMA-IR), calculated using insulin and fasting plasma glucose concentrations

    Time frame: 12 weeks

  3. Lipid profile

    Changes in total cholesterol, HDL-C, LDL-C, and triglycerides concentrations after the intervention (mg/dL)

    Time frame: 12 weeks

  4. Body Weight

    Changes in body weight after the intervention (kg)

    Time frame: 12 weeks

  5. Body composition

    Changes in body fat and muscle percentage after the intervention (%)

    Time frame: 12 weeks

  6. Waist and hip circumferences

    Changes in waist and hip circumferences after the intervention (cm)

    Time frame: 12 weeks

  7. Blood pressure

    Changes in systolic and diastolic blood pressure after the intervention (mmHg)

    Time frame: 12 weeks

  8. Physical activity level

    Changes in total physical activity in METs-min/week assessed by the International Physical Activity Questionnaire - Short Form after the intervention

    Time frame: 12 weeks

  9. Food intake quality

    Changes in food intake quality after the intervention assessed by the Mini-Survey to Evaluate Food Intake Quality (Mini-ECCA v.2)

    Time frame: 12 weeks

  10. Dietary ingestion

    Changes in carbohydrate, protein, and fat ingestion after the intervention (g)

    Time frame: 12 weeks

  11. Stool classification

    Changes in stool consistency will be assessed with The Bristol Stool Form Scale (BSFS) after the intervention. BSFS classifies stool into one of 7 stool types ranging from type 1 (hard lumps) to type 7 (watery), stool types 1 and 2 will be considered as constipation, stool types 5, 6, and 7 as diarrhea, and Stool types 3 and 4 as normal

    Time frame: 12 weeks

07

Study locations

1 of 1 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 9, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05245825
Lead sponsor
Centro Universitario de Ciencias de la Salud, Mexico
Responsible party
Gabriela Macedo Ojeda (Professor researcher A, Centro Universitario de Ciencias de la Salud, Mexico) — Principal investigator
First posted
Feb 18, 2022
Start date
Nov 20, 2021
Primary completion
Feb 20, 2024 (estimated)
Completion
Feb 20, 2024 (estimated)
Last update
Feb 9, 2023

Study contacts

Gabriela Macedo, PhD
Contact
gabriela.macedo@cucs.udg.mx
+523310585200 ext. 33900
Yareni Zuñiga, PhD
Contact
lauray.zuniga@academicos.udg.mx
+523336190635 ext. 145
Gabriela Macedo Ojeda, PhD
study director · University of Guadalajara

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is status unknown, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

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