For a calcuim supplement - I would recommend calcium carbonate or calcium citrate. There seems to be some controversy over calcium supplements. Calcium carbonate and citrate forms of calcium are absorbed better my the body - Oyster shell supplements have been found to have contaminants. Your welcome - I think it is great that you have had your bone density checked. I have been trying to increase my exercise as well.
Phytochemicals are plant chemicals that seem to have many health benefits.
There are over 4,000 phytos that have been identified so far. Phytos may help prevent cancer in several ways. They can prevent cancer-causing substances from forming. Or they may block cancer development. Phytos may also help protect against heart disease and help to control blood pressure to name a few.