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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.
Magnesium is needed for more than 300 biochemical reactions in the body. It helps maintain normal muscle and nerve function, keeps heart rhythm steady, and bones strong.