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Nutrition psychology seeks to understand the relationship between nutritional behavior, mental health and general well-being. [2] It is a sub-field of psychology and more specifically of health psychology , and may be applied to numerous related fields, including psychology , dietetics , nutrition , and marketing .
Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and good health. [1] Poor nutrition is a chronic problem often linked to poverty, food security, or a poor understanding of nutritional requirements. [2]
Because of its role in cellular synthesis, choline is an important nutrient during the prenatal and early postnatal development of offspring as it contributes to brain development. [16] Choline intakes from food for men, women and children may be below the Adequate Intake levels. [17]
Older people may feel less violent stomach contractions when they get hungry, but still suffer the secondary effects resulting from low food intake: these include weakness, irritability and decreased concentration. Prolonged lack of adequate nutrition also causes increased susceptibility to disease and reduced ability for the body to heal. [7] [8]
In rich countries, therefore, obesity is often a sign of poverty and malnutrition while in poorer countries obesity is more associated with wealth and good nutrition. Other non-nutritional causes for obesity included: sleep deprivation, stress, lack of exercise, and heredity. Acute overeating can also be a symptom of an eating disorder.
People on a balanced vegetarian or vegan diet can obtain adequate nutrition, but may need to specifically focus on consuming specific nutrients, such as protein, iron, calcium, zinc, and vitamin B 12. [6] [2] [7] Raw foodism and intuitive eating are other approaches to dietary choices. Education, income, local availability, and mental health ...
Malnutrition occurs when an organism gets too few or too many nutrients, resulting in health problems. [11] [12] Specifically, it is a deficiency, excess, or imbalance of energy, protein and other nutrients which adversely affects the body's tissues and form.
Nutritional science is a multidisciplinary study area concerned with the role of nutrition in health and disease across the human lifespan. [12] Nutritional epidemiology and nutritional science are two fields that share knowledge about the interactions of nutrients, food consumption, and the human body. [13]