What is important about the minerals calcium and iron?

Calcium builds bones and teeth; activates enzymes throughout the body. It helps regulate blood pressure; and helps muscles to contract, nerves to send messages, and blood to clot and Iron helps make hemoglobin which is the oxygen-carrying chemical in the body's red blood cells, and myoglobin which is a protein in muscle cells. Iron is essential for activating certain enzymes and for making amino acids, collagen, neurotransmitters, and hormones..

i think life is life. many could argue that life is ‘nice’ or ‘fun’ but in the end, it is immaterial and will end. nihilism is my philosophy. nothing matters in the end so why make an effort?