Flaxseed supplementation has been associated with a change in anthropometrics (body measurements). A 2024 meta-analysis found that flaxseed supplementation decreased weight, waist circumference, and BMI. These effects were most notable in people with a BMI above 30 and in trials that lasted more than 10 weeks.[1] Other studies have supported these findings.[2][3] While the mechanism for this is not yet clear, it could be related to an increase in satiety and a decrease in fat absorption due to an increased fiber intake. Another theory is that flaxseed might have an effect on hormones involved in the regulation of metabolism and appetite, but so far it seems that flaxseed supplementation did not significantly affect leptin or adiponectin levels.[4][5] Flaxseed supplementation alone is unlikely to result in weight loss, but it could be a useful addition to other interventions.
Can flaxseed help with weight loss?
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•Last Updated: May 16, 2025
Supplementing with flaxseed has been associated with reductions in weight, waist circumference, and BMI, particularly in individuals with a BMI over 30 and in studies that lasted more than 10 weeks. Although it may enhance satiety and decrease fat absorption, flaxseed alone is unlikely to cause significant weight loss but can complement other weight-loss strategies.