Healthy Lifestyle

 Evolution through the attribute of natural selection is normally a progressive interaction between the genome of the species as well as its environment over a course of multiple generations. Genetic traits could either positively or negatively select about their relative concordance as well as their concordance with the environmental selective pressures. If the environment remains relatively constant, the stabilizing selection has the habit of maintaining the genetic traits that are representative of the optimal average for a certain population (Camhiet al., 2015). On the other hand, when the environmental conditions change permanently, the evolutionary discordance arises between the species’ genome along with its environment and thus stabilizing is placed by the directional selection. 

In this case, it moves the average genome of the population to the new set point.

Food is one of the fundamental attributes of life. However, the eating habits that human beings have adopted are increasingly becoming complex, encompassing numerous attributes go beyond the addressing of nutritional requirements. The increase in the consumption of the unhealthy foods along with the sedentary lifestyle implies that the excess weight and obesity are currently surpassing undernourishment as the leading nutritional problems in the world. In the 1950s the main emphasis at the time was about dietary simplicity (Camhi, et al., 2015). The same period saw an increase in the number of the public policies that were advocating for the idea that individuals were responsible for their health and thus they have an obligation to ensure that they adopted healthy lifestyles. With the decades that followed, the health topic had become a topic that was extremely popular in the media coverage and at the same time becoming a lucrative market for vendors in the market of health related foods as well as services. Research by the CDC following the assessment of more than 3200 scientific articles on the subject of an effectiveness of health as well as the cost-effectiveness of prevention of disease through a healthy lifestyle found that prevention had major contributions to the reduction of cost.

The structure and function of the body encompass an assortment of biological systems that undertake an assortment of functions that normally promote healthy living. The circulatory system is one of the systems in the body carry out the role of transporting blood, carbon dioxide, oxygen, nutrients and hormones to all the parts of the body. It encompasses of the heart, blood, blood vessels, veins, and arteries. The digestive system encompasses a series of interconnected organs that by operating together facilitate the breakdown as well as absorption of food and at the same time remove waste (Butterworth, et al., 2014).  It is made of the mouth, stomach, esophagus, small intestines, rectum, large intestines as well as the anus. The pancreas and liver play a significant role in the digestive systems as they normally produce the necessary digestive juices.

The endocrine gland system encompasses eight chief glands involved in the secretion of hormones into the blood. These hormones by traveling to the various parts of the body tissues regulate diverse body function such as metabolism, sexual function, and growth. The immune system serves the role of being the body’s defense against viruses, bacteria and the other pathogens that could be harmful. The system is made of the spleen, lymph nodes, bone marrow, the thymus, lymphocytes encompassing the T-cells and B-cells, leukocytes the white blood cells. The lymphatic system is made of the lymph nodes, lymph vessels, lymph duct and plays the role of defending the body (Qi, et al., 2012).  The main objective that it plays includes the making as well as transportation of the lymph which a clear fluid with the white blood cell and assists the body in the fight against infections. The respiratory system makes it possible for the body to take in oxygen and at the same time expel carbon dioxide through breathing. The expulsion of the carbon dioxide is essential as it makes it possible for the body to receive the important oxygen. The urinary system, on the other hand, helps in the elimination of the waste products referred to as urea. The system contains two ureters, two kidneys, and urethra and sphincter muscle.

The vital organs in the human body are essential in the cases of healthy living. The human brain plays the role of controlling the entire body by receiving as well as sending messages to the various body organs and the nervous systems via the secreted hormones. The kidneys, on the other hand, assist in the removal of the excessive fluids as well as waste from the blood. The kidneys normally remove urea from the blood, combining it with water and other substances thus making urine (Butterworth, et al., 2014). The liver has many functions that include the detoxification of the harmful chemicals, filtering of blood, breaking drugs down, secreting bile as well as the production of the blood clotting proteins.

The choices of food are the most vital elements in the development of a healthy human lifestyle. Diets that are each in fresh foods, whole foods, as well as real foods, have the ability to affect our lives. The cardiovascular system transports nutrients, oxygen, cellular waste, and oxygen and hormones throughout the body. The issue of cardiovascular diseases encompasses the series of diseases that affect the system. The majority of the healthy problems associated with the cardiovascular system are known as lifestyle diseases as they are as a result of the bad habits including poor diets, the lack of exercise and other lifestyle choices (Camhi, et al., 2015). The inability of the body to make omega-3 fatty acids that are obtained from the food sources leads to the development of a weak heart. The omega-3 fatty acids have the ability to lower the risk of arrhythmia, the growth rate of plaque, blood pressure and at the same time prevent blood clots and inflation.

The digestive system assists in the breaking down of food into smaller particles to make it possible for facilitating the absorption of nutrients. The additional role that it plays is in the removal of the waste leftovers from the process of conversion. An average person gets just 15 grams of fiber every day. Research indicates that people who have high contents of fiber in the diets have a 22% higher survival rates. The digestive enzymes are the prevention that play the role of biological catalysts and assist the body in converting food into usable components such as amino acids and proteins (Camhi, et al., 2015). They additionally enhance the absorption of nutrients. These digestive enzymes are fragile elements and food that is in its natural state contains them. The fact that most of the food today has been processed or cooked, the body is not able to obtain the necessary nutrients.

References

Butterworth, P. A., Landorf, K. B., Gilleard, W., Urquhart, D. M., & Menz, H. B. (2014). The association between body composition and foot structure and function: a systematic review. Obesity Reviews, 15(4), 348-357. 

Camhi, S. M., Crouter, S. E., Hayman, L. L., Must, A., & Lichtenstein, A. H. (2015). Lifestyle Behaviors in Metabolically Healthy and Unhealthy Overweight and Obese Women: A Preliminary Study. Plos ONE, 10(9), 1-12. 

Qi, S., Ling, S., Prescott, J., Chiuve, S. E., Frank B., H., De Vivo, I., & ... Rexrode, K. M. (2012). “Healthy Lifestyle and Leukocyte Telomere Length in U.S. Women” Plos ONE, (2012) 7(5), 1-9 

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