Which statement best reflects the concept of biochemical individuality?

• A. There is a universal diet for all individuals
• B. Nutritional needs vary with biochemistry; no one diet fits all
• C. Supplements are always necessary
• D. Diet does not impact health

Answer: (B)

Biochemical individuality is the idea that people have different nutrient needs and responses to foods because their biochemistry—genetics, enzyme variations, metabolism, and gut microbiota—differs. Because these factors shape how we digest, absorb, and utilize nutrients, there isn’t one diet that fits everyone. Some individuals may do well on higher fat or higher carbohydrate patterns, others may need specific restrictions (like limiting certain amino acids or lactose), and nutrient requirements can shift with health status and life stage. This is why personalized nutrition, guided by how a person’s biochemistry behaves, is more accurate than a universal regimen.

The other options imply a universal diet for all, that supplements are always necessary, or that diet has no impact on health, which conflict with the reality of individual variability and the documented influence of diet on health.