Know2eat

Chia seeds

Salvia hispanica

Also known as Chia, Salba

SaveCompare

Tiny seeds from a Mexican member of the mint family that form a thick gel when hydrated, because of soluble mucilage in the seed coat. The USDA reference entry is for the dried seed.

Blood Sugar & Metabolic HealthWeight ManagementGut & Digestive Health

Potential health benefits

Best supported: Moderate

Ordered by how well the human research supports them — strongest first. A rating describes the state of the evidence, not how impressive the food is. How we rate evidence.

Blood glucose response

Blood Sugar & Metabolic Health
Moderate evidence

Some trials report a lower post-meal glucose rise when chia is added to a carbohydrate meal, an effect attributed to the viscous gel slowing gastric emptying. Longer-term glycaemic effects are less consistent.

Moderate evidence. Several human studies point the same way, with real caveats.

1 source

Deep research mode adds each paper’s own conclusion and stated limitations.

Body composition

Weight Management
Insufficient evidence

Chia is widely marketed for weight loss, and the trials that tested it do not support that. Randomised trials adding chia to the diet have generally found no meaningful difference in body weight or waist circumference.

Insufficient evidence. Not enough human research to say anything useful yet.

1 source

Deep research mode adds each paper’s own conclusion and stated limitations.

Bowel regularity

Gut & Digestive Health
Insufficient evidence

Evidence is limited. The high viscous fibre content gives a plausible route to softer, more frequent stools, but trials measuring bowel outcomes for chia specifically are few.

Insufficient evidence. Not enough human research to say anything useful yet.

No source is attached to this association yet, so it is rated insufficient by default. It is listed because people commonly ask about it — not because there is evidence for it.

Ask about Chia seeds

Ask about Chia seeds

Answers are written only from the entries on this page — the same nutrients, compounds, claims and citations you can read above. Nothing is added from outside the database, and every answer lists what it was built from.

AI explanations are not switched on for this site, so there is nothing to ask here. Everything above is read straight from the database and does not need them.

Key nutrients

Nutrient content per 100 grams
NutrientAmount% DV
Macronutrients
Calories486 kcal24%
Protein16.5 g33%
Total fat30.7 g39%
Carbohydrate42.1 g15%
Fibre34.4 g123%
Water5.8 g—
Fats
Saturated fat3.33 g17%
Monounsaturated fat2.31 g—
Polyunsaturated fat23.7 g—
Cholesterol0 mg0%
ALA (omega-3)17.8 g—
Linoleic acid (omega-6)5.83 g—
Vitamins
Vitamin C1.6 mg2%
Vitamin E0.5 mg3%
Thiamin (B1)0.62 mg52%
Riboflavin (B2)0.17 mg13%
Niacin (B3)8.83 mg55%
Folate49 µg12%
Vitamin B120 µg0%
Minerals
Calcium631 mg49%
Iron7.72 mg43%
Magnesium335 mg80%
Phosphorus860 mg69%
Potassium407 mg9%
Sodium16 mg1%
Zinc4.58 mg42%
Copper0.924 mg103%
Manganese2.72 mg118%
Selenium55.2 µg100%
Other measured compounds
Ash4.8 g—

Nutrient values are per 100 g of the USDA reference entry named on this page and vary with variety, growing conditions, storage and preparation.

Source record: Seeds, chia seeds, dried (USDA FoodData Central, FDC ID 170554).

% DV uses the FDA Daily Values for adults and children aged 4 and over. A dash means no Daily Value has been established for that nutrient.

Bioactive compounds

Compounds present in meaningful amounts. Presence is banded rather than quantified, because whole-food levels vary enormously with variety, growing conditions, storage and preparation.

How preparation changes things

Only effects with real support are listed. If a preparation method is missing, it is because nothing dependable is documented — not because it makes no difference.

  • groundIncreases ALA availability

    Whole chia seeds are small and softer than flax, so more of the contents are released during chewing than with whole flaxseed. Grinding still increases the measured availability of the fat.

  • soakedIncreases gel formation

    Soaking hydrates the mucilage into a gel, which is what produces the viscosity that appears to drive the effect on post-meal glucose, and which also removes the choking risk of dry seeds.

Things to know

Allergies, interactions and intake concerns. Every food gets this section — a reference where everything is uniformly good is not a reference.

  • Worth knowing

    Swallowing dry seeds

    Dry chia expands many times in volume on contact with liquid. Swallowing a spoonful of dry seeds and then drinking has caused oesophageal obstruction requiring endoscopic removal, particularly in people with swallowing difficulty or a narrowed oesophagus. Hydrating the seeds first avoids this.

  • Worth knowing

    Sudden fibre load

    A large portion is a substantial fibre dose. Introducing chia abruptly commonly causes bloating, gas and, without enough fluid, harder stools rather than softer ones.

  • Allergy

    Chia allergy

    Uncommon but documented, including reports of anaphylaxis, and cross-reactivity with sesame has been described.

  • Interaction

    Blood pressure and anticoagulant medication

    Large intakes have been reported to lower blood pressure modestly, which is worth knowing for anyone on antihypertensive medication. Claims of a clinically significant blood-thinning effect at food doses are not well supported but are sometimes raised before surgery.