Calcium not only builds bones...

Calcium is the most abundant mineral in the human body. About 99% of it is stored in the bones and teeth, while the remaining 1% is found in the blood, muscles, and intracellular fluids. It plays a crucial role in transmitting nerve impulses, muscle contraction, blood clotting, enzyme activation, and regulating hormone release. Even the heartbeat depends on calcium. Despite its importance, calcium deficiency is one of the most common nutritional problems worldwide. Decreased bone density, osteopenia, osteoporosis, brittle bones, and impaired muscle function are direct consequences of calcium deficiency.

What Prevents Calcium Absorption?

It’s not enough to simply consume calcium-rich foods. Absorption depends on bioavailability—the body’s ability to absorb, transport, retain calcium in the bones, and use it for biochemical functions. Calcium from food may not be absorbed effectively due to several factors:

• Vitamin D deficiency (reduces calcium transport in the intestines)

• High phosphate intake (common in processed foods)

• Presence of phytic or oxalic acids (found in legumes, spinach, rhubarb—they block calcium absorption)

• Low magnesium levels (affects enzyme activity involved in calcium metabolism)

• Poor gut microbiota

• Menopause, aging, hormonal changes

As we age, the activity of osteoblasts—the cells responsible for building bone tissue—declines, and the body’s ability to retain calcium in the bones weakens. That’s why having an additional source of easily absorbed calcium becomes critically important after age 40—for both men and women.

Why Traditional Calcium Sources Aren’t Always Effective

Milk, yogurt, cheese, and eggs are considered classic calcium sources. However, research shows that:

• Only 30–35% of the calcium in milk is actually absorbed

• Calcium carbonate supplements have even lower bioavailability (around 20–25%) and depend on stomach acidity, which decreases with age

• Lactose intolerance, allergies, or a vegan lifestyle eliminate these sources for many people

• Some calcium supplements can cause constipation, bloating, and mineral imbalances

FACT: A Harvard Nurses’ Health Study involving 77,000 women found that high milk consumption did not reduce, and in some cases even increased, the risk of hip fractures.

🦴 Calcium That Works: Giving Your Bones and Body What They Really Need

Greespi—a functional food made from microalgae—contains complete protein, B vitamins, iron, omega fatty acids, and is a natural source of highly bioavailable calcium.

• To meet the recommended daily calcium intake, which varies by age and physiological condition (typically 1000–1200 mg for adults), just two servings of Greespi per day are sufficient.

👉 What research shows:

• Microalgae contain 700–1000 mg of calcium per 100 g, significantly more than vegetables, milk, or yogurt

• In animal studies with vitamin D deficiency, microalgae improved bone density and structure more effectively than milk or calcium carbonate

• Bone density, blood calcium levels, and bone strength in the microalgae group were equal to or greater than in the control group

• Electron microscopy confirmed the restoration of bone microstructure due to calcium from microalgae

- Calcium in Greespi is absorbed more effectively than from traditional supplements or milk. This is due to the synergistic action of trace elements present in the product and its prebiotic properties, which improve gut microbiota and enhance mineral absorption.

Benefits of Greespi as a Calcium Source

• ✅ High bioavailability — more effectively absorbed than supplement-based calcium
• ✅ Safe for people with lactose intolerance
• ✅ No synthetic calcium forms — 100% natural source
• ✅ Trace elements (Mg, Zn, P) help retain calcium in bones
• ✅ High concentration of protein and B vitamins, essential for bone mass formation
• ✅ Easy to use — as a functional breakfast, snack, or supplement to your diet

Who Should Consider Greespi as a Calcium Supplement

• Adults 40+ for osteoporosis prevention

• Women during menopause

• Children and teens during growth spurts

• Vegans and vegetarians

• People recovering from antibiotic therapy

• Those with digestive disorders or low stomach acidity

• People who cannot consume dairy products

Greespi is an effective calcium source. Thanks to its freezing process, the product retains the natural bioavailability and benefits of all bioactive compounds.

Instructions and full ingredient list are available in the respective sections. To place an order, follow [this link].