because in many developed societies where people typically die from degenerative conditions, the age in which they die sheds more light on their life-time health. This produces many limitations when looking at the pattern of sickness, but sociologists try to look at various data to analyze the distribution better. Normally, developing societies have lower life expectancies in comparison to developed countries. They have also found correlations between mortality and sex and age. Very young and old people are more susceptible to sickness and death. On average women typically live longer than men, although women are more likely to have bad health. Disparities in health were also found between people in different social classes and ethnicities within the same society, even though in the medical profession they put more importance in "health related behaviors" such as alcohol consumption, smoking, diet, and exercise. There is a great deal of data supporting the conclusion that these behaviors affect health more significantly than other factors. Sociologists think that it is more helpful to look at health and illness through a broad lens. Sociologists agree that alcohol consumption, smoking, diet, and exercise are important issues, but they also see the importance of analyzing the cultural factors that affect these patterns. Sociologists also look at the effects that the productive process has on health and illness. While also looking at things such as industrial pollution, environmental pollution, accidents at work, and stress-related diseases. Social factors play a significant role in developing health and illness. Studies of epidemiology show that autonomy and control in the workplace are vital factors in the etiology of heart disease. One cause is an effort-reward imbalance. Decreasing career advancement opportunities and major imbalances in control over work have been coupled with various negative health costs. Various studies have shown that pension rights may shed light on mortality differences between retired men and women of different socioeconomic statuses. These studies show that there are outside factors that influence health and illness. International perspective Africa HIV/AIDS is the leading epidemic that affects the social welfare of Africa. Human Immunodeficiency virus (HIV) can cause AIDS which is an acronym for Acquired Immunodeficiency Syndrome (AIDS), a condition in humans in which the immune system begins to fail, leading to life-threatening infections. Two-thirds of the world's HIV population is located in Sub-Saharan Africa. Since the epidemic started more than 15 million Africans have died by complications with