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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 .
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]
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]
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 ...
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]
Omnivorism, a term typically reserved for those who consume a non-restricted variety of food products, [12] may also refer to the consumption of rare or foreign foods. [5] [4] Consuming unfamiliar foods, especially foods from different cultures, signifies a sense of worldliness that can only be obtained through social and economic capital.
The concept of nutrition security or nutritional security evolved as a broader concept. In 1995, it was defined as "adequate nutritional status in terms of protein, energy, vitamins, and minerals for all household members at all times." [19]: 16 It is also related to the concepts of nutrition education and nutritional deficiency. [20]
Adequate Intake (AI), where no RDA has been established, but the amount established is somewhat less firmly believed to be adequate for everyone in the demographic group. Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A and selenium ) that can be harmful in large amounts.