diet and health given the works are published based on grounding evidence. The observational findings allowed for health interventions such as the fortification of foods and limits/bans of certain substances from food. These implemented changes have since enhanced human health and wellbeing by means of prevention and improvement. Research suggest its impact specifically on cancer patients has been promising. The nutritional support to some provides relief of side effects, improves response to therapy and reduces the risk of cancer reoccurring, all of which enhance the quality of life for cancer patients. Progressive impacts have also been seen on a variety of infectious diseases, chronic disease, and congenital malformations, ultimately elevating the burden on the healthcare system and striving for optimal function. Nutritional epidemiology is the scientific basis upon which public health nutrition is built. Nutritional epidemiology aims to deliver knowledge on how to cope with an imbalance between nutrients that causes illness such as anaemia, goitre wasting and stunting. The understanding of the characteristics of exposures require measurement to understand the diet–disease relationship. The ability to relate exposure to steps in the causal pathway improves the value of findings in relation to public health recommendations. See also Malnutrition Nutrition and cognition Nutrition and pregnancy Nutritional anthropology Epidemiology Over-nutrition References Epidemiology Nutritional science Nutrition