A living store
Most body calcium is in bones and teeth. Bone tissue is continually renewed.
Follow the sourceOPENING THE FIELD GUIDE
Calcium builds and maintains bones and teeth, and participates in muscle movement and nerve signalling.
Most body calcium is in bones and teeth. Bone tissue is continually renewed.
Follow the sourceVitamin D is needed to help absorb calcium. Explore their relationship in the pair explorer.
Follow the sourceCalcium carbonate and citrate contain different proportions of calcium. The nutrient amount on the label is the useful comparison.
Follow the sourceIntake includes food. More supplemental calcium does not automatically produce stronger bones.
Supplements can cause constipation and interact with medicines, including levothyroxine and some antibiotics. Excess intake can be harmful.
Follow a relationship.
Look a little closer at the label.
Vitamin D helps the intestine absorb calcium. Adequate intake of both contributes to normal bone maintenance.
Food and existing intake count. More of both is not automatically better; too much vitamin D can cause harmful high blood calcium.
This explains a relationship; it is not a check that a combination is safe for you.
Look for the collagen type, animal source and grams of collagen per serving. A scoop’s total weight may include flavouring or other ingredients.
Compare collagen grams, not scoop size.
Use the collagen amount on each label. These starting values are illustrative, not product data or recommended doses.
Mass equivalence only. Different collagen ingredients are not interchangeable, and this is not a number of capsules to take.
The derivative study involved 10 men and found no statistically significant change in the collagen-synthesis marker. It cannot establish that all formats work equally or that an “enhanced” blend works better.
Compare evidence for the exact formulation. Brand age and marketing claims do not earn quality points.