Many people like to drink bone broth for calcium. In fact, the effect of calcium supplementation through bone broth is not very satisfactory. The minerals in bones and meat can only be partially dissolved in the soup by simmering, but calcium is an insoluble component and it is unlikely that calcium will be dissolved out of the bones and meat during cooking. Directly consuming pure rotten bones and bone marrow is also of little significance for calcium supplementation, as the calcium in bones is usually very tightly bound and the digestion and absorption of calcium is poor. Bone marrow is also low in calcium and contains a lot of cholesterol, which is not good for people with dyslipidemia or those who need to limit their fat intake. The best food source for calcium is milk and dairy products, which contain high calcium and have the proper calcium to phosphorus ratio, making calcium easily absorbed. Combined with outdoor sunlight, calcium supplementation is far more effective than bone broth. People with dyslipidemia and restricted fat intake can choose low-fat or skim milk.