Older adults commonly lack Vitamin D and Vitamin B12, with deficiencies in B6, B9 (Folate), Calcium, Magnesium, and others also frequent due to reduced absorption, less sun exposure, and dietary changes. Vitamin D is crucial for bone health, while B12 supports nerve and cognitive function, making these particularly important for seniors.
Older adults are more likely than younger people to experience the following deficiencies:
Symptoms such as pins and needles, disturbed vision, a sore and red tongue, mouth ulcers, muscle weakness and problems with balancing and walking, psychological problems such as depression and confusion, problems with memory, understanding and judgement could also be related to B12 deficiency.
Alvarez recommends for older adults — with a PCP's approval.
10 Unexpected Signs of a Vitamin D Deficiency
The foods highest in vitamin D are fatty fish (salmon, mackerel, sardines, tuna) and fish liver oils (like cod liver oil), with egg yolks, beef liver, and UV-exposed mushrooms also containing significant amounts, but most people get vitamin D from fortified foods like milk, cereals, and juices.
When vitamin D levels are low and the body isn't able to properly absorb calcium and phosphorus, there is an increased risk of bone pain, bone fractures, muscle pain, and muscle weakness. In older adults, severe vitamin D deficiency (levels less than 10 ng/mL) may also contribute to an increased risk of falls.
Key vitamins and minerals for people over age 51
The Bottom Line
Vitamin D vs D3, what's the difference? Technically, vitamin D relates to both vitamin D2 (which comes from plants) and vitamin D3 (which the body produces naturally and also comes from animal foods). However, both forms function similarly in the body.
Supplements to watch for
B12 deficiency can trigger specific food cravings, most notably for meat, fish, or eggs, as the body seeks animal-based sources to replenish the vitamin, especially in those on vegetarian/vegan diets or older adults. While cravings for sugary or salty foods can also signal general B-vitamin issues, the distinct urge for protein-rich animal products is a key indicator, but professional testing is crucial for confirmation.
Cutaneous manifestations associated with vitamin B12 deficiency are skin hyperpigmentation, vitiligo, angular stomatitis, and hair changes. A diagnosis of vitamin B12 deficiency is often overlooked in its early stages because these signs are not specific to vitamin B12 deficiency alone.
The foods highest in Vitamin B12 are animal products, with clams and liver (beef, lamb) being exceptionally rich sources, often providing several hundred percent of the daily value in a single serving, alongside seafood like mussels, sardines, and salmon, dairy, eggs, and fortified cereals and nutritional yeast for vegans.
Vitamin D is used by your body for energy, to support a healthy immune system, and build healthy bones. The body's best source of Vitamin D is produced when your skin is exposed to sunlight, which can be a tricky thing to accomplish at certain times of the year, depending on where you live.
Calcium and vitamin D
Unfortunately, as you age, your gut absorbs less calcium. In addition, your skin gets thinner, making it harder for your body to produce the vitamin D it needs. Put together, it's no wonder that older adults struggle to maintain the proper balance of calcium and vitamin D.
In summary, low vitamin D concentrations may increase the risk of dementia and AD through both neurodegenerative and vascular mechanisms.
You should not use cholecalciferol if you have had an allergic reaction to vitamin D, or if you have: high levels of vitamin D in your body (hypervitaminosis D); high levels of calcium in your blood (hypercalcemia); or. any condition that makes it hard for your body to absorb nutrients from food (malabsorption).
Green peas (Matar): Green peas, also known as matar, serve as a beneficial source of vitamin D. Including green peas in your meals can provide you with this essential nutrient.
What are the best vitamins for hair growth? The available evidence supports the routine use of only three supplements: Vitamin D, Iron, and Vitamin C, mostly for its effects on improving iron absorption.
✅ 7 Best Multivitamin Options for Seniors
Taking too much vitamin D leads to calcium buildup (hypercalcemia), causing physical signs like nausea/vomiting, fatigue/weakness, frequent urination & excessive thirst, constipation, and confusion/disorientation, alongside potential bone pain or kidney stones, often from supplements, not sun exposure.
Vitamin and mineral deficiencies, including B2, B3, B5, B6, B9, B12, C, D, iron, and magnesium, are among the most common causes of unexplained fatigue. Vitamin D deficiencies affect over 50% of the global population, and approximately 12.5% have iron deficiency anemia.
Yes, you can do a vitamin D test at home using simple finger-prick kits (like TouchBio, 2San, We Test Bio) that provide quick, preliminary results (often in 10 mins) by analyzing a drop of blood to check if levels are sufficient, insufficient, or deficient, helping you monitor bone health and immune support, but you should always discuss abnormal results with a doctor for proper diagnosis and treatment.