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Flax seeds — also called linseed — are tiny golden or brown seeds that pack an impressive nutritional punch. Although small in size, their nutrient density and health benefits are enormous. For years, flax seeds have been valued in traditional medicine and are now widely appreciated in scientific communities for their diverse health-supporting properties.
In this article, we will explore flax seeds nutrition facts per 100 g and per spoon (approx. 1 tablespoon), discuss the significance of their nutrients, offer practical insights into how flax seeds improve health, and provide tips for incorporating them into your daily diet.
Flax seeds are edible seeds from the plant Linum usitatissimum. They are one of the oldest cultivated crops and have been a dietary staple for centuries in many cultures.
Flax seeds are known for:
High fiber content
Omega-3 fatty acids
Lignans (plant compounds with antioxidant properties)
Essential micronutrients
They are commonly eaten:
✔ raw
✔ ground (as flaxseed meal)
✔ soaked in water (flaxseed gel)
✔ mixed into smoothies, salads, yogurt, or cereals
Flax seeds are often labeled a “superfood” due to their exceptional nutrient profile:
Rich in Omega-3 Fatty Acids: Particularly alpha-linolenic acid (ALA)
Excellent Fiber Source: Essential for digestion
High in Antioxidants: Especially lignans
Good Source of Plant-Based Protein
Supports Heart, Gut & Hormonal Health
This nutrient density explains why flax seeds are recommended by nutritionists, especially for:
✨ vegetarians & vegans
✨ individuals with heart health concerns
✨ people wanting to improve digestion
✨ those aiming to manage cholesterol
Below is a detailed nutritional breakdown for 100 g of whole flax seeds:
| Nutrient | Amount per 100 g |
|---|---|
| Calories | ~534 kcal |
| Protein | ~18.3 g |
| Total Fat | ~42.2 g |
| — Saturated Fat | ~3.7 g |
| — Monounsaturated Fat | ~7.5 g |
| — Polyunsaturated Fat | ~28.7 g |
| Omega-3 (ALA) | ~22.8 g |
| Carbohydrates | ~28.9 g |
| — Dietary Fiber | ~27.3 g |
| — Sugars | ~1.6 g |
| Vitamins | — |
| Vitamin B1 (Thiamine) | ~1.64 mg |
| Vitamin B6 | ~0.47 mg |
| Folate | ~87 µg |
| Minerals | — |
| Calcium | ~255 mg |
| Iron | ~5.7 mg |
| Magnesium | ~392 mg |
| Phosphorus | ~642 mg |
| Potassium | ~813 mg |
| Zinc | ~4.3 mg |
(Values are approximate and may vary depending on seed quality and variety.)
A tablespoon of ground flax seeds weighs about 7–8 g. Here’s an estimated nutritional profile:
| Nutrient | Amount per 1 Tbsp (≈7 g) |
|---|---|
| Calories | ~37 kcal |
| Protein | ~1.3 g |
| Total Fat | ~3.0 g |
| — Saturated Fat | ~0.26 g |
| — Omega-3 (ALA) | ~1.6 g |
| Carbohydrates | ~2.0 g |
| — Dietary Fiber | ~1.9 g |
| Vitamins & Minerals | Small amounts of B-vitamins, Mg & Mn |
Note: These figures are approximations based on typical values and rounding.
Flax seeds contain about 18% protein — notable for a seed. While not a complete protein like animal sources, flax protein has a good balance of amino acids.
Benefits:
✔ Supports muscle repair
✔ Helps with satiety (feeling full)
Flax seeds are one of the richest plant sources of omega-3 fatty acids, yielding up to 22 g of ALA per 100 g.
Why this matters:
ALA reduces inflammation
Supports heart health
Can help lower cholesterol levels
ALA is especially valuable for vegetarians & vegans, since it’s a plant alternative to fish oils.
About 27 g of fiber per 100 g makes flax seeds one of the richest natural fiber sources.
Fiber benefits:
Improves bowel regularity
Lowers cholesterol
Aids weight management
Stabilizes blood sugar
Both soluble and insoluble fiber types are present in flax seeds — supporting gut health and digestion.
Flax seeds are among the top plant sources of lignans, antioxidants linked to:
🟢 Hormonal balance
🟢 Reduced cancer risk (especially breast & prostate)
🟢 Anti-inflammatory effects
Lignans are especially valuable for hormonal health and disease prevention.
Though not as dominant as fiber or omega-3s, flax seeds still offer:
✔ Magnesium – muscle & nerve function
✔ Phosphorus – bone health
✔ Manganese – metabolism
✔ B-vitamins – energy support
This makes flax seeds a small but potent micronutrient source.
| Form | Benefits | Best For |
|---|---|---|
| Whole Seeds | Long shelf life | Baking, grinding at home |
| Ground Seeds (Meal) | Easier to digest | Smoothies, cereal |
| Flaxseed Oil | Concentrated ALA | Salad dressings, not for heating |
Important: Whole seeds may pass through undigested, so ground flaxseed is often recommended to absorb nutrients better.
General guidance:
1–2 Tbsp (7–14 g) daily is enough to provide health benefits
Start small and increase gradually to prevent digestive discomfort
Tips:
✔ Grind seeds before eating
✔ Store in fridge to prevent oxidation
✔ Combine with fluids (like water, smoothies)
Here are delicious, simple ideas:
Sprinkle flaxseed meal on oatmeal
Add to yogurt, cereal, or smoothies
Substitute 1 Tbsp flax seed for 1 egg in vegan baking (mix with 3 Tbsp water to form “flax egg”)
Add to muffins, bread, pancakes
Mix into soups, stews, or sauces
Use as a topping for salads
Mix a spoon into juices or buttermilk
Due to omega-3s, flax seeds may support:
✔ Hair shine & strength
✔ Skin hydration
✔ Reduced inflammation in skin conditions
Use flax seeds in DIY face masks or simply consume regularly for internal benefits.
Flax seeds are generally safe, but:
Too much fibre too soon may cause:
Gas
Bloating
Cramping
Start slowly and increase gradually.
Rare, but possible. Stop use if you notice reactions.
Flax seeds may affect:
Blood sugar regulation
Blood thinning medications
Talk to a doctor if on medications or with health conditions.
| Feature | Flax Seeds | Chia Seeds | Hemp Seeds |
|---|---|---|---|
| Omega-3s | Very high (ALA) | High | Moderate |
| Fiber | Very high | Very high | Moderate |
| Protein | Good | Good | Excellent |
| Ease of Use | Needs grinding | Gel-forming | Easy |
Each seed has its benefits — but flax seeds stand out for omega-3 content and lignans.
Fact: They can support weight management because of high fiber, which helps keep you full.
Fact: Oil provides concentrated omega-3 but lacks fiber and lignans.
Flax seeds are a nutritional powerhouse — providing:
✔ High-quality plant protein
✔ Heart-healthy omega-3 fatty acids
✔ Significant dietary fiber
✔ Antioxidant lignans
✔ Important micronutrients
Whether you consume them per spoon daily or add them to meals regularly, flax seeds can be a simple yet powerful addition to a healthy lifestyle.
Strive for consistency and balance, and remember — even small nutritional changes can yield big health results over time.
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