12 Unexpected Causes of Vitamin Deficiencies You Might Be Missing

11. The Aging Process and Vitamin Deficiencies

As the body ages, its ability to absorb, metabolize, and retain essential vitamins naturally declines, making older adults particularly susceptible to nutrient deficiencies. The stomach produces less hydrochloric acid over time, impairing the absorption of vitamin B12, iron, and calcium—nutrients crucial for cognitive health, energy levels, and bone density. Furthermore, the skin's ability to synthesize vitamin D from sunlight diminishes with age, increasing the risk of osteoporosis and immune dysfunction. Additionally, age-related changes in appetite, taste perception, and digestion can lead to reduced food intake or a preference for processed, nutrient-poor meals. Certain medications commonly prescribed to seniors, such as antacids and diuretics, can further interfere with vitamin absorption. To counteract these effects, older adults should prioritize nutrient-dense foods, consider supplementation when necessary, and undergo routine health check-ups to monitor their vitamin status.