Vitamins for Healthy Aging: A Doctor’s Guide to Feeling Your Best at Every Age

By Ga Geong Lee, MD Anti-Aging & Wellness Care at Sunny Health DPC

Aging is natural, however how we age is influenced by the choices we make every day, including how we nourish our bodies.

At Sunny Health, we don’t chase youth. We focus on vitality, supporting energy, mental clarity, mobility, and skin health through lifestyle, smart testing, and strategic supplementation.

Here’s a simple, science-backed guide to vitamins we often recommend to support graceful aging, inside and out.

1. Vitamin D3: The Longevity Vitamin

Most adults are low in vitamin D, especially those who

work indoors or wear sunscreen regularly (which we should!).

Vitamin D supports:

    •    Bone strength

    •    Mood and mental sharpness

    •    Immune resilience

    •    Inflammation balance

We typically recommend: 2,000–5,000 IU daily depending on blood levels.

Tip: Ask for a vitamin D blood test during your annual exam.

2. Vitamin B12 (and Full B Complex)

B vitamins play a major role in:

    •    Brain function and memory

    •    Energy production

    •    Nerve health

    •    Red blood cell formation

As we age, stomach acid declines, making B12 absorption harder, especially for those on acid blockers or metformin.

We often recommend: A methylated B-complex or B12 lozenges/injections for those with fatigue or brain fog.

Tip: Vegans, vegetarians, and patients over 60 often benefit from supplementation.

3. Vitamin C: More Than Immunity

Vitamin C isn’t just for cold season, it’s a collagen co-factor, antioxidant, and supports healthy blood vessels and skin.

Daily goal: At least 500–1000 mg/day in divided doses.

Food first: Citrus, berries, bell peppers, broccoli.

Tip: Vitamin C helps with iron absorption and supports wound healing.

4. Vitamin E (Mixed Tocopherols)

Vitamin E is a powerful antioxidant that helps:

    •    Protect skin cells

    •    Reduce oxidative stress

    •    Support heart and eye health

We prefer mixed tocopherols (not just alpha-tocopherol), which better reflect natural forms found in food.

Tip: Take with a meal that contains healthy fat for better absorption.

5. Vitamin K2 (Especially with D3)

Vitamin K2 (not K1) helps direct calcium into bones and teeth, not arteries. It works synergistically with vitamin D.

Look for: MK-7 form of K2 in combination with D3.

Especially important for: Patients at risk for osteoporosis or cardiovascular issues.

What About Multivitamins?

Multivitamins can be helpful, if well-formulated. However, many over-the-counter brands are low-dose or poorly absorbed. At our office, we guide patients toward quality over quantity, and focus on filling specific gaps based on labs and symptoms.

Should You Get Tested?

Yes! Especially if you experience:

    •    Fatigue or brain fog

    •    Mood changes

    •    Frequent illness

    •    Muscle cramps or tingling

    •    Hair thinning or brittle nails

At Sunny Health, we offer comprehensive nutrient testing to help tailor your supplements to what your body actually needs, nothing more, nothing less.

Final Thoughts:

Aging well isn’t about chasing a number, it’s about staying sharp, mobile, and full of life as the years go on.

A personalized approach to vitamins can be a small but powerful step in that direction.