Yes, fish bones do provide calcium. Fish bone contains a high calcium content, with calcium and phosphorus making up about 2% of the whole fish by dry weight. Consuming fish bones, especially through canned fish, is beneficial as they become soft and digestible during the canning process, allowing for calcium absorption. For example, half a cup of canned salmon, which includes the bones, can contain approximately 290 mg of calcium, provided the bones are consumed[1].
Furthermore, research indicates that calcium extracted from fish bones is highly absorbable. Studies have shown that this form of calcium can be six times more absorbable than standard calcium carbonate supplements, making it an effective source for maintaining bone health[2].
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