Vitamin D acts as the essential mechanism that allows calcium to enter bone tissue, helping to maintain bone density and reduce fracture risk. Beyond bone health, it plays a significant role in regulating the immune system.
Emerging research has also linked adequate Vitamin D levels to supporting healthy cognitive function and mood, though this area of study is still developing. Dietary sources include fatty fish such as salmon, egg yolks, and fortified dairy or plant-based milks.
Why aging changes nutritional needs
Several physiological changes that occur with age — including reduced stomach acid, less efficient skin, and declining kidney function — directly affect how the body absorbs and activates key vitamins. These changes can occur gradually and without clear symptoms, making routine blood-level checks with a healthcare provider particularly useful for adults over 60.
Vitamin B12: reduced stomach acid makes absorption harder after 60
Stomach acid naturally decreases with age, and that reduction directly affects the body’s ability to extract Vitamin B12 from food. The vitamin requires acid to be separated from the proteins it binds to during digestion.
B12 is critical for maintaining the myelin sheath — the protective coating around nerve fibers — which underpins sharp memory and cognitive function. It is also essential for the production of healthy red blood cells, which carry oxygen throughout the body.
Better oxygen delivery supports overall vascular health, making B12 relevant not only to brain function but to circulation as well. Lean meats, poultry, fish, eggs, and nutritional yeast are among the main dietary sources.
Vitamin C: collagen production keeps blood vessel walls resilient
Vitamin C is widely associated with immune defense against seasonal illness, but its structural role is equally significant. It is described as essential for the production of collagen — the protein that gives skin, connective tissues, and blood vessel walls their strength and flexibility.
As a potent antioxidant, Vitamin C also protects cells from oxidative stress, a process that accelerates tissue damage over time. Supporting collagen synthesis may help maintain the integrity of vein walls, which can weaken with age.
