chia seed and Reduced Body Weight

Research synthesisLow evidenceSmall effect4 studies · 2 beneficial · 2 neutral · 0 harmful

Across 4 studies, 2 reported beneficial small-sized effects on reduced body weight, while 2 reported neutral findings. The most studied dose was 30-50 g/day of whole chia seeds, predominantly in overweight or clinical populations. Effects were typically observed at 56-84 days, though the evidence base is small and mixed.

Effective dose range: 30-50 g/day
Studied populations: overweight/obese adults, individuals with hypertriglyceridaemia

Caveats: Evidence base is small (only 4 studies) — conclusions should be considered preliminary. Many of the included studies did not reach statistical significance (2 of 4 neutral) — effect may be smaller than the predominant direction suggests. The 2024 meta-analysis showing beneficial effects had a small effect size and included 14 RCTs with variable quality; the two most rigorous individual RCTs found no significant benefit on body weight.

Generated Jul 9, 2026

Doses used in studies

g/day: 30–50 (median 40, IQR 35–45) — 2 studies

Time to effect

Median: 10 weeks · IQR 9 weeks–11 weeks · Range 8 weeks–2.8 months — Reported in 2 of 4 studies

Safety in these studies

Overall tolerabilityReported
The inconclusive nature of the scientific community's understanding of its safety warrants further research and appropriate testing.
from: Therapeutic Perspectives on Chia Seed and Its Oil: A Review.

4 of 4 papersPopulation:

The impact of chia seeds on diabetes, blood pressure, lipid profile, and obesity indicators: Systematic review and meta-regression analysis of 14 randomized controlled trials.
- 2024-12
- Meta-Analysis · n = 835
- Prostaglandins & other lipid mediators 175
- - Hawal Lateef Fateh
  - Dyari H Ahmed
  - Maryam Sharifi Najafabadi
  - Jalal Moludi
- PubMed: 39299649
- DOI: 10.1016/j.prostaglandins.2024.106907
4 Insights on
- Reduced Body Weight
- High evidence
- Clinical
These results suggest that chia supplementation may offer beneficial effects on dyslipidemia, hypertension, and body weight
Effect
Beneficial
Effect size
Small
Significant
Yes
Dose
lower doses
Chia seed does not promote weight loss or alter disease risk factors in overweight adults.
- 2009-06
- RCT · n = 76
- Nutrition research (New York, N.Y.) 29(6)
- - David C Nieman
  - Erin J Cayea
  - Melanie D Austin
  - Dru A Henson
  - Steven R McAnulty
  - Fuxia Jin
- PubMed: 19628108
- DOI: 10.1016/j.nutres.2009.05.011
14 Insights on
- Reduced Body Weight
- High evidence
- Mixed
Pre-to-post measures of body composition, inflammation, oxidative stress, blood pressure, and lipoproteins did not differ between CS and P for both sexes.
Effect
Neutral
Effect size
Small
Significant
No
Dose
50 g/day
Effect of chia seeds or concentrated fish oil on cardiometabolic risk markers in subjects with hypertriglyceridaemia: a parallel clinical trial.
- 2024-10-03
- RCT · n = 22
- Journal of human nutrition and dietetics : the official journal of the British Dietetic Association 37(6)
- - Mohammad Reza Shahparvari
  - Javad Nasrollahzadeh
- PubMed: 39360590
- DOI: 10.1111/jhn.13369
3 Insights on
- Reduced Body Weight
- High evidence
- Clinical
After 8 weeks, the mean reduction in weight exhibited by the three groups was not statistically different (2.0, 2.7 and 2.8 kg, respectively, for the control, fish oil and chia seed groups).
Effect
Neutral
Effect size
Small
Significant
No
Dose
30 g/day
Therapeutic Perspectives on Chia Seed and Its Oil: A Review.
- 2018-03-13
- Review
- Planta medica 84(09/10)
- - John Parker
  - Amanda N Schellenberger
  - Amy L Roe
  - Hellen Oketch-Rabah
  - Angela I Calderón
- PubMed: 29534257
- DOI: 10.1055/a-0586-4711
5 Insights on
- Reduced Body Weight
- Low evidence
Hundreds of articles detailing such benefits as decreased blood glucose, decreased waist circumference and weight in overweight adults, and improvements in pruritic skin and endurance in distance runners have been recorded.
Effect
Beneficial
Effect size
Small
Significant
Yes

chia seed and Reduced Body Weight

The impact of chia seeds on diabetes, blood pressure, lipid profile, and obesity indicators: Systematic review and meta-regression analysis of 14 randomized controlled trials.

Chia seed does not promote weight loss or alter disease risk factors in overweight adults.

Effect of chia seeds or concentrated fish oil on cardiometabolic risk markers in subjects with hypertriglyceridaemia: a parallel clinical trial.

Therapeutic Perspectives on Chia Seed and Its Oil: A Review.