Not necessarily. The level of nutrients found in food varies considerably, even in the same food from season to season and batch to batch. Many of the vitamins

Not necessarily. The level of nutrients found in food varies considerably, even in the same food from season to season and batch to batch. Many of the vitamins and minerals are cheaper to produce at high quality with industrial production, such as ascorbic acid (around $12/kg - https://www.foodbusinessnews.net/articles/10836-vitamin-c-prices-triple-in-a-year-s-time https://www.foodbusinessnews.net/articles/10836-vitamin-c-pr...). The dosage can be more precise in this way. Also with diabetes and certain other illness, some nutrients can't be taken at a required level from natural sources due the amount of other nutrients, e.g. carbohydrates.