What vitamins and/or supplements would be most recommended for someone in their 40's?

Multivitamins: For someone without vitamin deficiency and on a well balanced diet, a one a day type multivitamin with minerals(without iron in men;with iron for menstruating women)may be a good idea but it's not mandatory.

Few, Food Better: Vitamins is a big market, very inexpensive, derived from all sorts of otherwise food waste ; non food materials, big business, dependent on public ignorance/fear. Outside of vitamin d3 (not d), which I have found to be low for many people, or other specific deficiencies, possibly omega 3's from phytoplankton, best eat minimally processed foods from nature, avoid center isles with processed foods.