, with elevated levels being a risk factor for atherosclerosis. bone and joint health sardines are a superb source of bone-building calcium and contain surprisingly high concentrations of vitamin d, a nutrient not so readily available in the diet. vitamin d prevents unwanted inflammation and helps bones...
keep your blood oxygenated, and your body alive. learn all about it here. the circulatory system by brandon specktor inside your body there's a -mile highway of blood vessels with your beating heart at the center. learn all about it here. the skeletal system by brandon specktor full-grown humans have bones...