The value of vitamin supplements varies depending on individual circumstances. Here are some insights based on authoritative sources:

1. Diet vs. Supplements: Generally, it is recommended to meet nutritional needs primarily through a healthy diet rather than supplements. Whole foods offer greater nutrition, essential fiber, and protective substances that supplements cannot replicate[^1^][^2^].

2. Specific Populations: Some individuals may benefit from vitamin supplements, including pregnant or breastfeeding women, the elderly, those with specific dietary restrictions (e.g., vegans), or people with certain medical conditions that affect nutrient absorption[^1^][^2^].

3. Efficacy and Risks: For the general population, large-scale studies have shown little to no benefit of multivitamins in preventing chronic diseases such as cardiovascular disease and cancer. In some cases, high doses of certain vitamins can be harmful[^3^][^4^].

4. Recommended Situations: Supplements may be useful in particular situations where individuals are not able to get enough nutrients from their diet alone, such as with vitamin D during winter months or in individuals with specific deficiencies[^1^][^3^].

In summary, while vitamin supplements can be beneficial for certain groups, a well-balanced diet is generally the best way to achieve nutritional needs. Before starting any supplement regimen, it is advisable to consult with a healthcare professional.