8Fatty Fish
Many studies have shown that omega-3 fatty acids are important for maintaining bone density. They can help prevent bone loss when you are aging. In addition to nuts, many types of fish are high in these fatty acids, such as tuna, mackerel, or salmon. Some canned fish products can also contain high levels of calcium and vitamin D. However, you should consume them in moderation since wild-caught fish might contain mercury. [8]
