ues is established through the circulatory and signaling systems of the GI tract and inner system. Food does not enter target organs or tissues directly, which results major problem that we face, i.e., quantitative description of this complex nonlinear system. The metabolic and cellular communication networks provide feasible ways and can be evaluated by obtaining only a few millimeter cube of peripheral blood.
(IV) Finally the last one is related to Public health being a social and political concept aimed at the improving health, prolonging life and improving the quality of life among whole populations through health promotion, disease prevention and other forms of health intervention.
A distinction has been made in the health promotion literature between public health and a new public health for the purposes of emphasizing significantly different approaches to the description and analysis of the determinants of health, and the methods of solving public health problems. This new public health is distinguished by its basis in a comprehensive understanding of the ways in which lifestyles and living conditions determine health status, and recognition of the need to mobilize resources and make sound investments in policies, programmes and services which create, maintain and protect health by supporting healthy lifestyles and creating supportive environments for health.
Despite wide differences in opinion among researchers and the general public over recent years, dietary fats remain a potent regulator of physiological function. This calls for caution in supplementing more than a few grams of any uncommon fat per day. Food sources remain the preferred method of intake in most situations.
The various fatty acids provide perhaps the most important aspect of dietary fat manipulations, although increasing the percentage of fat in the diet also has an impact on exercise and resting metabolism. Nutrition, especially sensing and absorption of energy substances, not only plays an important role in the intensity of life activities and storage of energy substances but also controls aging and lifespan. More activity and rapid growth result in shorter life expectancy, and less activity and slower growth result in longer life expectancy.
Awareness on junk food facts is lacking amongst every individual in the community. Eating a healthy diet is a hard work. The only way to evade junk food is to encourage eating healthy diet and more of the following foods, which are usually considered to be a part of a healthy diet. Foods that are low in fat, saturated fat, and cholesterol high fiber foods, including whole-grain foods, vegetables and fruits. Foods that have only a moderate amount of sugar and salt calcium rich foods, to meet daily calcium requirements.
Iron rich foods, to meet daily requirements for iron. Nutrition science constantly evolves, and future research will better elucidate the independent and combined roles of modifiable factors such as physical activity and nutrition on human health. Health professionals can play a pivotal role in optimizing Modern diet and human health across the life cycle, particularly during growth and old age.