Flaxseed is one of the richest plant-based sources of alpha-linolenic acid (ALA), a type of omega-3 fatty acid, and is also notably high in lignans and both soluble and insoluble fiber. Research suggests that regular consumption of ground flaxseed may support cardiovascular health by helping to manage cholesterol levels and blood pressure, with some studies indicating modest benefits for blood sugar regulation as well. The lignan content in flaxseed has drawn interest for its potential role in hormonal balance and cancer risk reduction, particularly in hormone-sensitive conditions, though findings are still evolving. Ground flaxseed is generally considered more bioavailable than whole seeds, as the intact hull can pass through the digestive system undigested, and flaxseed oil offers a concentrated source of ALA without the fiber component.
Compare this supplementResearch suggests that flaxseed may have a meaningful role in supporting blood pressure regulation, particularly in i...
View studies →Research suggests a mixed and inconclusive picture when it comes to flaxseed and cancer risk reduction, particularly ...
View studies →Research suggests that flaxseed, as part of a fiber blend, may support gastrointestinal health markers such as stool ...
View studies →Research suggests that the available published evidence linking flaxseed to hormonal balance in humans is extremely l...
View studies →Research suggests that flaxseed oil, as a source of the omega-3 fatty acid alpha-linolenic acid, may support skin hea...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Oil | 1–2 g | Daily | Skin health and omega-3 ALA intake | Common in clinical trials assessing skin hydration and ALA supplementation |
| Powder | 25–40 g | Daily | Blood pressure regulation | Based on RCTs including the FlaxPAD trial showing antihypertensive effects |
| Powder | 10–40 g | Daily | Blood sugar regulation and insulin sensitivity | Range used across multiple RCTs in type 2 diabetic populations |
| Powder | 30–40 g | Daily | Cholesterol management and cardiovascular health | Common in clinical trials examining lipid-lowering effects of ground flaxseed |
| Powder | 6–24 g | Daily | Digestive health and constipation relief | Common in clinical studies assessing fiber and bowel regularity |
| Powder | 25–30 g | Daily | Hormonal balance and cancer risk reduction in breast and prostate cancer research | Based on RCTs examining lignan-mediated effects on estrogen metabolism and tumor markers |