According to the data in this graphic, the most common causes of death were non-communicable diseases (excluding cancer) such as cardiovascular diseases, diabetes, respiratory diseases, neuro-mental illness, and digestive illness; infectious diseases such as smallpox, diarrhea, malaria, tuberculosis, and respiratory diseases; death caused by humans such as murder, war, suicides, air pollution, drugs, and accidents; health complications, and cancer.
According to a 2010 infographic by Information is Beautiful, people inhabiting in the Northern hemisphere, more precisely above latitude 42°N, are not getting enough UVB light from sunlight to make vitamin D in the skin during winter season.
In the UK, 50% of the population has insufficient levels of vitamin D, while 16% of the population is severely deficient. In the United States, 77% of the population has insufficient levels of vitamin D, while 6% of the population is severely deficient. Within the U.S., the groups more affected by insufficient levels of vitamin D are Non-Hispanic blacks (98%) and Mexican Americans (90%).
To try compensate for the lack of UVB light in winter time and the consequent low vitamin D levels, consumers have turned to the vitamin D industry, an industry that is worth $460 million, as of 2009, in the U.S. alone.
Average global life expectancy is now 70.4 years; 73.3 for women and 67.5 for men.
Life expectancy has gone up significantly in places like Iran, Bangladesh, the Maldives, South America and Africa, where the increase has been of 13 years or more, compared to previous decades. North America, Western Europe and Australasia have seen a modest increase of 7 plus years.
The rise in life expectancy has been possible thanks to the improvement in health programs and the control/cure of many infectious diseases that ended up in death, especially in young children.
But, there are places where the rise has been negligible like Eastern Europe, with an average increase of just 1 year. Other places have even experienced a decline in life expectancy. Such is the case of Lesotho and Belarus, which have seen a rise in HIV and alcoholism, respectively.
According to a report published by The Lancet, although we live longer now, the quality of life has declined due to the rise in obesity and its consequences: diabetes, high blood pressure and heart conditions.