Rhubarb
Rhubarb is a food that contains a high amount of fiber, vitamin K, calcium, and minerals. Moreover, it also contains prebiotic fiber, which promotes healthy bacteria in the gut. Like leafy vegetables like spinach, there is a high amount of oxalate in Rhubarb, so most calcium quantities are not absorbed into the body. Research proves that the human body can absorb around a quarter of the calcium in Rhubarb. [8]
Conclusion
Calcium is an essential mineral needed in the human body. Some individuals may not be meeting the RDI of calcium. Hence, it’s vital to develop recipes from various foods high in calcium. Besides consuming calcium from dairy products, other sources for humans can help create a healthy variety.
Reference：
[1] https://nutritiondata.self.com/facts/dairy-and-egg-products/32/2
[2] https://pubmed.ncbi.nlm.nih.gov/26786887/
[3] https://pubmed.ncbi.nlm.nih.gov/21569104/
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3393628/
[5] https://ndb.nal.usda.gov/ndb/foods/show/299513
[6] https://pubmed.ncbi.nlm.nih.gov/24871476/
[7] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257681/
[8] https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2621.1997.tb04421.x