The preventative and the remedy are to take supplements of Vitamin D and amino acid chelated magnesium, especially magnesium L-threonate, and likely also Urolithin-A. These can improve cardiovascular function. They also help viable brain cells to clear out damaged mitochondria and replace them with new healthy mitochondria. In addition, magnesium is essential to over six hundred enzymatic reactions, including many that produce proteins vital to normal cell function.
There will always be debate - my purpose here is to inform others.