Structured evidence table for Vitamin C Skin Health Meta-Analysis, generated from 2 reusable source documents in the Migaku knowledge base.
| topic | claim | evidence level | citation | source |
|---|---|---|---|---|
| Vitamin C Skin Health Meta-Analysis | 1 2 3 5 6 7 8 9 More than two billion people are at risk of micronutrient deficiencies, which often involve multiple, rather than single, nutrients [,]. | 4 | Muacevic Alexander (2026) | A to Z of Health: An Evidence-Based Narrative Review of Multivitamin-Multimineral and Nutraceutical Supplementation |
| Vitamin C Skin Health Meta-Analysis | They are widely used to help individuals meet their daily nutrient requirements, support overall health, and address increased nutritional needs associated with pregnancy, aging, and illness. | 4 | Muacevic Alexander (2026) | A to Z of Health: An Evidence-Based Narrative Review of Multivitamin-Multimineral and Nutraceutical Supplementation |
| Vitamin C Skin Health Meta-Analysis | According to the National Health and Nutrition Examination Survey, MVM use in the USA increased from 35% in 1999-2000 [] to 49-52% between 2011 and 2014, with higher usage among women than men [-]. | 4 | Muacevic Alexander (2026) | A to Z of Health: An Evidence-Based Narrative Review of Multivitamin-Multimineral and Nutraceutical Supplementation |
| Vitamin C Skin Health Meta-Analysis | The most common deficiencies include vitamin A, folic acid, vitamin D, iron, iodine, and zinc, especially among children and women in low- and middle-income countries [-]. | 4 | Muacevic Alexander (2026) | A to Z of Health: An Evidence-Based Narrative Review of Multivitamin-Multimineral and Nutraceutical Supplementation |
Source documents