Do caffeinated colas cause calcium deficiency?

Answer 1

Caffeine can increase calcium excretion, but not usually to any significant extent. One cup of coffee and lead to a calcium loss of 2-3 mg, something offset by adding a tablespoon of milk. (see cited source on side)

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Answer 2

Caffeinated colas can potentially contribute to calcium deficiency if consumed in excess, as caffeine can increase calcium excretion through urine. However, moderate consumption of caffeinated colas as part of a balanced diet is unlikely to cause calcium deficiency. It's important to ensure adequate calcium intake from other sources such as dairy products, leafy greens, and fortified foods.