you might be suffering from a vitamin d deficiency. another major sign of vitamin d deficiency is a constant state of fatigue and tiredness. everybody feels tired once in a while, but experiencing fatigue on a daily basis can be a sign of vitamin d deficiency especially if fatigue is accompanied by bone...
tissue => classification of bones => embryonic growth of bone => factors that affect bone growth and maintenance => the skeleton => skull - skeleton => vertebral column - skeleton => rib cage - skeleton => shoulder and arm - skeleton => hip and leg - skeleton => joints-articulations => aging and the...