Are you being serious? It has been known for over a century that people develop scurvy when they lack fruit in their diet. Sailors were given limes to prevent scurvy on long voyages. The body can absorb man made ascorbic acid and it will prevent scurvy. Not a major concern in the USA but a problem in India and other places where people cannot afford to buy fruit for their diet.
The problem is that with industrial farming the nutrients are removed from the soil and what is added in is man made nitrogen but no mineral elements like copper and magnesium and selenium which are important for proper body functioning. This information is not at all difficult to find but one does has to open ones mind and be capable of critical thinking.
When the teachers went on strike in Washington state the union head spoke out that they were protesting the use of the federally mandated (and highly profitable for the companies involved) student tests. Their concern was that they were teaching for the test and what the students needed to be learning instead was critical thinking. She was right as this is sadly lacking among children and adults.