Calcium-rich foods: Complete list, roles, and nutritional advice

Why is calcium essential for the body?

Calcium is the most abundant mineral in the human body. Approximately 99% of calcium is found in bones and teeth, with the rest circulating in the blood and tissues.

At every moment, the body deposits and withdraws calcium to maintain blood balance. When intake is insufficient over the long term, the body draws from this reserve, which can weaken bone structure.

Benefits: Calcium

Calcium is an essential mineral involved in many functions vital to the body's operation:

• Calcium contributes to normal blood clotting
• Calcium contributes to normal energy metabolism
• Calcium contributes to normal muscle function
• Calcium contributes to normal neurotransmission
• Calcium contributes to the normal function of digestive enzymes
• Calcium plays a role in cell division and specialization processes
• Calcium is necessary for the maintenance of normal bones
• Calcium is necessary for the maintenance of normal teeth

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What foods are rich in calcium?

There are several categories of calcium-rich foods, from animal or plant sources.

Dairy products, well-known sources of calcium

Dairy products are among the richest sources of calcium.

Among the most common:

• milk,
• yogurts,
• cheeses (especially hard cheeses).

Calcium-rich foods of plant origin

Contrary to popular belief, many plant foods contain calcium.

These include:

• certain green vegetables (kale, broccoli),
• legumes,
• seeds (sesame, chia),
• oilseeds (almonds).

Calcium-fortified foods

Many products are now fortified with calcium, including:

• certain plant-based drinks,
• specific cereals or processed products.

These foods can be useful in certain contexts, provided that labels are checked and minimally processed products are prioritized.

Calcium supplementation: When and how to consider it?

Calcium supplementation involves providing this mineral through dietary supplements in the form of tablets, capsules, or powders. It can be considered when daily needs cannot be met through diet alone, for example, in cases of restrictive diets, lactose intolerance, or depending on lifestyle.

There are different forms of calcium in supplements, here are the most common:

• Calcium carbonate
• Calcium citrate

When supplementation is considered, it is important to respect recommended daily allowances to avoid excess.

The combination with a sufficient intake of vitamin D is also a key criterion for supplementation to be physiologically effective.

Calcium-rich foods and vitamin D

Calcium cannot be useful without vitamin D. Vitamin D is recognized for contributing to the normal absorption and utilization of calcium.

Foods containing calcium and vitamin D

Certain foods provide calcium while also supplying vitamin D, an essential nutrient for its assimilation. Combining these two elements in the diet allows for full benefit from nutritional intake, without needing to multiply sources.

Among the foods naturally containing or commonly enriched with calcium and vitamin D, we notably find:

• Fatty fish such as salmon, sardines, or mackerel
• Dairy products (milk, yogurts, cheeses), when fortified with vitamin D
• Eggs, especially the yolk
• Fortified plant-based drinks (soy, almond, oat), subject to checking the composition
• Certain fortified foods, such as cereals or margarines containing both calcium and vitamin D

Calcium-rich foods, complete list, roles and nutritional advice: In summary

Calcium-rich foods include dairy products like milk, yogurt, and hard cheeses, as well as fortified plant-based alternatives such as fortified soy or almond milk.

Among plant sources, certain green vegetables like broccoli and kale, legumes, and seeds like sesame and almonds also provide calcium, although absorption may vary depending on the compounds present.

Fortified foods, such as certain plant-based drinks, cereals, and juices, can supplement intake when diet alone is not sufficient.

It is recommended to distribute these sources throughout the day to maintain regular intake, and to consult a healthcare professional if supplementation is considered.