There are a number of health issues, but the most boomed and considered ones are:
Population
Increasing population is the main reason for the spread and prevalence of various diseases today. There are many places in the world today, which are over populated, and their citizens are suffering from diseases mainly caused by deprivation. Now, Asia is also one of the most populous areas of the world. Due to over population, there are people who aren't getting proper food and proper water. Due to these circumstances diseases like berry berry, rickets and other such diseases develop.
Health issues are being considered by most of the leading countries today; they have the view of an over populous place and its position. China was also once the most populous country but then it made certain rules to decrease their population. The basic rule was that no person is allowed to give birth to more than 1 child. This caused a great in their growing population.
Pollution
Pollution is also one of the reasons for improper health of people in a country. Pollution problems are all over the world. Mainly in places like India, Pakistan and other populous countries of the world. This pollution problem gives rise to various diseases. Besides the numerous diseases it cause, the main hazard taking place due to it; it affects the growth of the people living in that region. It affects the winds, water, crops, environment, and many other factors of growth. It is not necessary that diseases are always considered perhaps due to these conditions the Asians are less healthy than the western people. The Asians are short, have unhealthy skin and hair and many other things. All this is due to the environment which is badly affected by the pollution. This environmental problem not only affects the humans, but it also affects the animals living there. These animals after all are the source for the humans to survive whether they are used for ploughing the land or they are used for making meals.
Prevention from accidents
In modern days the numbers of accidents are increasing. This is also an issue in buzz. Many countries have applied the law that one cannot drive without driving license and they have kept certain speed levels like one cannot drive above 60 at a public or sort. But still there are places like Pakistan where the death rate due to accidents are 10 deaths per day or more than ten. This issue is now being strongly considered in such places.
Diseases
Certain diseases which are being spread due to injurious health material such as cigarettes and etc are being considered strongly such as in India there has been a latest issue of 'Sopping to smoke in films' as these films are encouraging youngsters to smoke which causes them diseases like lung cancer, bronchitis etc.
Considering these issues the best way which is until now recognized is health insurance but still insurance doesn't takes care of one.