Sesame Seeds
Food · Fat & Oil · Food, Typed Supps
Tiny seeds, big mineral punch — just don't count on all that calcium actually getting into your bones.
Stage by stage
- Chewing & Crushing (Mouth): Sesame seeds have a tough hull, so chewing, toasting, or grinding into tahini is needed to release the oils and minerals locked inside.
- Gastric Breakdown (Stomach): Stomach acid and enzymes begin breaking down the seed's protein and roughly 50% fat content, freeing nutrients for absorption downstream.
- Intestinal Absorption (Small Intestine): In the small intestine, copper, magnesium, phosphorus, and zinc are absorbed efficiently, but much of the seed's calcium stays bound to oxalate and is poorly absorbed.
- Bone & Tissue Use (Bones & Cells): Absorbed minerals and lignans like sesamin support bone density, enzyme function, and modest improvements in cholesterol and blood pressure over sustained intake.
Timing
Eating sesame seeds or tahini with a meal containing some fat supports absorption of their fat-soluble lignans and overall nutrient uptake.
Time to effect
- Weeks: Benefits like modest cholesterol or blood pressure improvements associated with sesame lignan intake are typically observed in studies after several weeks of regular consumption, not a single serving.
Allergens
Contains: Sesame. Derived from what this food is, not from a product label.
Eating patterns
Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Gluten-free. Depends on the product: Keto, Low-FODMAP.
Satiety
71 on the satiety index, where white bread is 100 — low. Modelled from the Holt et al. (1995) measurements.
Cost band
Mid — roughly £8 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 626.2
- Protein: 22.2g
- Carbohydrate: 6.2g
- of which sugars: 0.6g
- Fat: 55.6g
- of which saturated: 6.8g
- Fibre: 10.1g
- Sodium: 24mg
Food vs. supplement
Whole sesame seeds and tahini provide fiber, unsaturated fats, and unique lignans not found in isolated mineral supplements, though supplements can deliver more consistently absorbable calcium if that is the specific goal.
Kitchen tip
Toast sesame seeds or use tahini rather than whole raw seeds; breaking the hard seed coat improves access to its oils and minerals, and light toasting also deepens flavor without destroying most nutrients.
Common myth
"A handful of sesame seeds gives you as much usable calcium as a glass of milk." In reality: While raw sesame seeds contain about 975 mg of calcium per 100 g on paper, a large share is bound as poorly soluble calcium oxalate in the hull, so the calcium your body can actually absorb from sesame seeds is substantially lower than the label total, and lower than well-absorbed dairy calcium gram for gram.
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