supplements if their vitamin D levels are low.
However, more is not always better. Excessive vitamin D supplementation can cause problems, so high-dose supplements should generally be taken only with appropriate medical guidance.
2. Vitamin B12: Supporting Nerves and Blood Cells
Vitamin B12 is essential for normal red blood cell formation and healthy nervous-system function.
Older adults can sometimes have difficulty absorbing B12 from food. Certain medications and digestive conditions can also affect B12 absorption.
Foods containing B12 include fish, meat, poultry, eggs, milk, and other animal products. Fortified foods and supplements can provide another source, particularly for people whose diets contain little or no animal products.
A B12 deficiency can cause fatigue, weakness, anemia, or neurological symptoms. If deficiency is suspected, a healthcare professional can recommend appropriate testing.
3. Vitamin C: Supporting Immune Function
Vitamin C is best known for its role in supporting the immune system, but it
