calcium
B1Pronunciation
UK
- /kˈælsiəm/
US
- /ˈkælsiəm/
Meanings
Noun
the chemical element calcium, a soft silvery metal
calcium as a dietary mineral needed for bones and teeth
Beyond the definition
Calcium isn't just what makes your bones strong—it’s a vital player in much more. Think of it as a tiny construction worker inside your body, constantly building and maintaining not only your skeleton but also helping muscles contract, nerves send signals, and blood to clot.
You may have first learned about it from milk commercials promising stronger bones. While dairy is a great source, you can also find it in leafy greens like kale, fortified cereals, and some fish. Without enough, our bodies start to pull it from bone stores, weakening them over time. So next time you reach for that glass of milk or a spinach salad, remember you’re giving your body the building blocks it needs to function.
Calcium is a chemical element essential for living organisms, most famously known for building and maintaining strong bones and teeth. Its importance extends far beyond skeletal health. It plays a crucial role in many bodily functions, including muscle contraction (allowing you to move), nerve transmission (how your brain communicates with the rest of your body), blood clotting (stopping bleeding when injured), and hormone secretion.
Our bodies store over 99% of their calcium supply within our bones and teeth, acting as a reservoir that can be tapped into if blood calcium levels drop too low. This is why consistent calcium intake throughout life is so important—to ensure there's enough available for all these vital processes and to maintain bone density.
You'll often hear about calcium in the context of preventing osteoporosis, a condition where bones become weak and brittle. It also helps with heart rhythm, blood pressure regulation, and may contribute to a healthier metabolic environment.
Good sources of calcium include dairy products (milk, yogurt, cheese), leafy green vegetables (kale, spinach), fortified foods (cereals, orange juice), and some types of fish (sardines, salmon). If you're not getting enough through your diet, supplements can help—but it's always best to consult with a doctor or nutritionist.
So calcium isn't just about strong bones; it's the unsung hero working tirelessly behind the scenes to keep your entire body functioning at its best!
Examples
- 1
Child development
Children need enough calcium for healthy bones and teeth.
- 2
Food source
Yogurt is a good source of calcium.
- Phrasesource of calcium
food or drink that gives you calcium
- 3
Fortified drinks
She buys oat milk with added calcium.
- Phraseadded calcium
calcium put into a food or drink
- 4
Dietary needs
If you don't eat dairy, ask your doctor whether you need a calcium supplement.
- Phrasecalcium supplement
a pill or product that gives you extra calcium
More examplesFewer examples
- 5
Blood test
The blood test showed that his calcium levels were too low.
- Phrasecalcium levels
the amount of calcium in the body or blood
- 6
Nutrition advice
The dietitian suggested more calcium-rich foods, such as tofu and sardines.
- Phrasecalcium-rich
containing a lot of calcium
See also
Contrast
Used with (collocations)
- calcium carbonate
- calcium deficiency
- calcium supplement
- calcium channel
Word family
- calcify
- calcification
Explore
Forms and spellings
2 forms open this card.
Main spelling
- calciumnoun
Forms
- calciumspluralnoun