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To closely examine magnesiumâs importance to the heart muscle, we have to pull out our microscopesâyes, it gets right down to the cellular and even the molecular level. Magnesium plays an essential role in many of the functions of energy production itself.It is an integral part of the energy (ATP) and protein (enzymes-as co-factor and as a structural component of the muscle protein, myosin) moleculesâwithout which the energy to contract and relax the heart does not occur properly.o closely examine magnesiumâs importance to the heart muscle, we have to pull out our microscopesâyes, it gets right down to the cellular and even the molecular level. Magnesium plays an essential role in many of the functions of energy production itself.
Like most vitamins, magnesiumâs role is primarily regulatory. It allows enzymes to function properly, which in turn enable a vast majority of the bodyâs chemical reactions. Enzymes are the basis of the bodyâs ability to function while supporting life.