Several essential vitamins for older men as well as women include vitamin B12, folic acid and vitamin D, according to WebMD. As a man ages, his body becomes less efficient at absorbing some key nutrients, and as result, he may develop a deficiency.
Vitamin B12 is vital for creating red blood cells and DNA in addition to healthy nerve function, notes WebMD. To get more vitamin B12, older men should consider taking a supplement and eat more fish, meat, poultry, eggs and milk, which are good sources of vitamin B12. Folic acid is an essential B vitamin that prevents anemia among other benefits, and older men need to include a lot of fruits and vegetables in their diet to get enough of this vitamin. Many breakfast cereals are also fortified with folic acid, but it is still advisable to consult a doctor to consider taking a supplement.
Vitamin D is an important nutrient for older men because it helps the body absorb calcium, maintain bone density and prevent osteoporosis, explains WebMD. Research also suggests that vitamin D may protect against disease such as cancer, rheumatoid arthritis and multiple sclerosis. The vitamin is produced in the body from sunlight and found in foods such as salmon, tuna and eggs. As men age, their skin becomes less efficient at producing the vitamin from sunlight, which means older men should consider taking a vitamin D supplement.