
The last half century has seen a steady increase in the incidence and prevalence of chronic inflammatory diseases with further increases expected. According to the Marshall Pathogenesis, a number of factors are to blame:
Manifestations of both arteriosclerosis1) 2) and cardiac disease3) can be observed in mummies of ancient Egypt. Ötzi the Neolithic Iceman who lived around 3300 BC was found to have arthritis.4) Yet, it is only recently that rates of certain chronic diseases have appeared to escalate.
At the beginning of the twentieth century, infectious diseases were the leading cause of death worldwide. In the United States, three diseases — tuberculosis, pneumonia, and diarrhoeal disease — caused 30% of deaths.5) By the end of the twentieth century, in most of the developed world, mortality from infectious diseases had been replaced by mortality from chronic illnesses such as heart disease, cancer and stroke.6)
While many researchers have argued7) 8) that most chronic diseases are not caused by infection, a broad array of evidence suggests otherwise.
In 2000, approximately 125 million Americans (45% of the population) had chronic conditions and 61 million (21% of the population) had multiple chronic conditions.9)
According to a 2004 report:
In 2004, almost half of all Americans, or 133 million people, live with a chronic condition. … People with chronic conditions account for 83 percent of health care spending and those with five or more chronic conditions have an average of almost fifteen physician visits and fill over 50 prescriptions in a year.
Partnership for Solutions National Program Office, Robert Wood Johnson Foundation
Chronic diseases are the largest cause of death in the world. In 2002, the leading chronic diseases—cardiovascular disease, cancer, chronic respiratory disease, and diabetes—caused 29 million deaths worldwide.10) Worldwide annual mortality due to chronic disease is expected to increase in real numbers as well as relative to deaths from injuries and diseases traditionally understood to be infectious such as polio, rubella, tuberculosis, etc.
In the United States, the number of people with chronic conditions is projected to increase steadily for the next 30 years.11) Partnership for Solutions National Program Office estimates that it will reach 157 million by 2010 while another estimate says that figure will be 140 million.
One team concluded in a recent meta-analysis that if Americans keep gaining weight at the current rate, 75 percent of U.S. adults will be overweight and 41 percent obese by the year 2015.
Obesity is likely to continue to increase, and if nothing is done, it will soon become the leading preventable cause of death in the United States.
Youfa Wang, MD, PhD 12)
One 2002 paper concluded that “the prevalence of obesity is increasing globally, with nearly half a billion of the world’s population now considered to be overweight or obese.”13)
In a 2002 paper, Edwin Gale concluded that the incidence of childhood diabetes (type I diabetes) began to steadily increase at almost the same time – from the 1950s onwards.14) This increase had been identified in a range of developed countries including the United States, Sardinia, and Northern Europe.15)
According to a 2009 paper in Diabetes care, the number of people with diabetes in the United States is expected to double over the next 25 years. That would bring the total by 2034 to about 44.1 million people with the disease, up from 23.7 million today.
Members of societies that do not supplement their food chains with vitamin D have naturally low levels of 25-hydroxyvitamin D (25-D).16) 17) However when whole populations are given large amounts of vitamin D, the only members of that population who remain “deficient” are those whose immune systems are fighting disease by actively downregulating 25-D. In other words, the more rigorously vitamin D is added to milk, juice, snack bars, and breakfast cereals, the less likely it is that someone has low levels of vitamin D but no chronic disease.
For this reason, data which identifies vitamin D “deficiency” is actually pointing to incidence of disease. In a 2009 paper, Saintonge et al showed that the prevalence of low levels of 25-D - and therefore the rate of chronic disease - is between 2% and 14% among a cohort of 2,955 Americans 12 to 19 years of age.18)
According to Dr. Roger Bouillon of the University of Leuven, “over one billion” people worldwide have vitamin D “deficiency.”19)
The accuracy of this estimate is debatable. If this figure includes those populations that do not supplement with vitamin D, Dr. Bouillon's figure may be an overestimate: healthy people who do not supplement with vitamin D have naturally low levels of 25-D. However, it does seem likely that a large fraction of the world's population suffers from chronic disease of one kind or another.
A study published in 2008, controlling for age and other factors, found that Americans' serum levels of 25-D declined “5-9 nmol/L” in 1988-1994 as compared to 2000-2004 in most males, but not in most females.20)
While it has been widely hypothesized that lifestyle factors, including a poor diet and a lack of exercise, are driving what the World Health Organization has termed “an obesity epidemic,” even the most ambitious obesity intervention programs, which have gone to great lengths to increase rates of exercise and improve eating habits of a population, have been failures.21) 22)
Instead, there is growing evidence that chronic diseases are not due to predominantly lifestyle factors. A number of factors have contributed to the creation of an epidemic of Th1 inflammatory diseases.
War offers a number of circumstances which contribute to the incidence and prevalence of chronic disease as evidenced by epidemiological studies. Circumstances include:
Perhaps it is more than coincidence that those diseases for which there is a demonstrated association with war – cancers, hypertension, obesity, and many of the other forms of cardiovascular disease – saw an increase in the aftermath of World War II, particularly in the United States. Given the discrepancy with which the genders have traditionally enlisted, it would be speculative to suggest that war plays a role in the onset of predominantly “male” chronic diseases, but that possibility may be worth further study.