For men over the age of 20, maintaining a balanced diet that supports overall health is crucial. However, certain vitamins and supplements may be beneficial to address the specific needs of this age group, especially as lifestyles evolve through different life stages. Here’s a rundown of key vitamins and supplements to consider:

### 1. **Multivitamins**
- **Importance:** A good-quality multivitamin can help fill any nutritional gaps in the diet and support overall health.
- **Recommendation:** Look for one that is specifically formulated for men, as it may contain appropriate levels of key nutrients.

### 2. **Vitamin D**
- **Importance:** Supports bone health, immune function, and may play a role in testosterone levels.
- **Sources:** Sun exposure, fatty fish, fortified foods, and supplements.

### 3. **Vitamin B12**
- **Importance:** Necessary for red blood cell formation, neurological function, and DNA synthesis. B12 deficiency can lead to fatigue and anemia.
- **Sources:** Animal products (meat, fish, eggs, dairy) and fortified foods. Supplements may be necessary for those on a vegan or vegetarian diet.

### 4. **Folic Acid (Folate)**
- **Importance:** Supports DNA synthesis and repair, and is vital for cell division. Important for overall male reproductive health.
- **Sources:** Leafy greens, legumes, nuts, and fortified cereals.

### 5. **Vitamin C**
- **Importance:** An antioxidant that helps protect against oxidative stress, supports the immune system, and aids in collagen formation for skin health.
- **Sources:** Citrus fruits, strawberries, peppers, and supplements.

### 6. **Zinc**
- **Importance:** Crucial for immune function, testosterone production, and overall reproductive health.
- **Sources:** Meat, shellfish, legumes, seeds, nuts, and whole grains. Zinc supplements can also be beneficial.

### 7. **Magnesium**
- **Importance:** Supports muscle and nerve function, regulates blood pressure, and plays a role in protein synthesis.
- **Sources:** Nuts, seeds, whole grains, and leafy green vegetables. Magnesium supplements may be helpful if you have a deficiency.

### 8. **Omega-3 Fatty Acids**
- **Importance:** Important for heart health, brain function, and may help reduce inflammation.
- **Sources:** Fatty fish (like salmon and mackerel), walnuts, flaxseeds, and fish oil supplements.

### 9. **Coenzyme Q10 (CoQ10)**
- **Importance:** An antioxidant that plays a role in energy production in cells. It may benefit heart health and provide energy support.
- **Sources:** Meat, fish, whole grains, and CoQ10 supplements.

### 10. **Curcumin (Turmeric)**
- **Importance:** Known for its anti-inflammatory properties, it may support joint health and overall well-being.
- **Sources:** Turmeric spice or curcumin supplements with black pepper extract (piperine) for enhanced absorption.

### Considerations:
- **Consult a Healthcare Provider:** Before starting any new vitamins or supplements, it’s important for men over 20 to consult with a healthcare provider or a registered dietitian. They can provide personalized recommendations based on individual health needs, diet, and lifestyle factors.
- **Balanced Diet:** It’s always preferable to obtain vitamins and nutrients from a well-balanced diet that includes a variety of whole foods, rather than relying solely on supplements.

### Conclusion:
A combination of vitamins and minerals can support overall health, energy levels, and specific bodily functions in men over 20. Maintaining a balanced diet and a healthy lifestyle is also essential for well-being as one ages.