Evidence supporting the use of: Seaweed (unspecified)
For the body system: Skeletal System (Bones)

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Table of Contents

Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Seaweed, a broad term encompassing various marine algae, is used to support skeletal health primarily due to its high mineral content, especially calcium, magnesium, and trace elements essential for bone maintenance and development. Scientific evidence suggests that certain types of seaweed (e.g., red and brown algae) are rich sources of bioavailable calcium, sometimes rivaling or exceeding that found in dairy products. Several small-scale human and animal studies have indicated that seaweed calcium can be absorbed efficiently and may contribute to bone mineral density. For example, research published in "Food Chemistry" and "Journal of Nutritional Science and Vitaminology" has demonstrated that seaweed-derived calcium can increase bone mass in animal models and improve markers of bone health in postmenopausal women.

Additionally, seaweed contains other nutrients beneficial for the skeletal system, such as vitamin K, boron, and magnesium, all of which play roles in bone metabolism. However, the breadth and quality of clinical studies in humans remain limited, and much of the available data comes from observational studies, animal research, or in vitro analyses. Despite this, the consistent demonstration of high mineral content and absorption supports its scientific basis for skeletal health. It should be noted, however, that the effectiveness may vary depending on the type of seaweed, preparation method, and individual nutritional status. Overall, while more large-scale clinical trials are needed, current evidence provides a moderate scientific rationale for the use of seaweed to support bone health.

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