Welcome to the forum.
Grow what you eat and eat what you grow.
Helping a senior couple eat for health and mental clarity to me suggests eating foods high in magnesium and Vitamin E.
Foods that are high in magnesium are seeds, nuts, leafy greens, and legumes.
For Vitamin E chose wheat germ oil, sunflower oil, and safflower oil which have very high amounts. Also include seeds and nuts.
