An April 2020 study published in Arthritis and Rheumatology suggests that autoimmune disease is on the rise in the United States.
In the study, researchers found that the prevalence of the most common biomarkers of autoimmune disease, called antinuclear antibodies (ANAs), is significantly increasing in the U.S. overall as well as among certain populations. These affected populations include:
- Non-Hispanic whites
- Adults 50 year and older
The researchers examined over 14,000 patients ages 12 and up over the course of three time periods spanning 30 years. In this time frame, they discovered that the overall frequency of ANAs in their test subjects went from 11% affected individuals to almost 16% affected. The worst affected population was the adolescent group, who experienced a nearly three-fold increase in ANA rates over the course of the study period.
While the exact cause of autoimmune disease remains unknown, many scientists believe that a combination of genetic and environmental factors is responsible. However, the researchers in the study state that because people have not changed much genetically over the past 30 years, it is more likely that lifestyle or environmental factors are responsible for the ANA increases.
Christine Parks, PhD, is one of the researchers involved in the study who focuses on the environmental causes of rheumatoid arthritis (RA) and other autoimmune diseases. “These new findings…will help us design studies to better understand why some people develop autoimmune diseases,” she said. She also added that there are over 100 chronic, debilitating autoimmune conditions that could stand to benefit from further research.
Donna Jackson Nakazawa, a Maryland-based science journalist and author of the book The Autoimmune Epidemic, believes that our ever-increasing exposure to chemicals, heavy metals, and viruses, coupled with stress, dietary and other lifestyle factors, is primarily to blame for the increase in autoimmune disease. She also points out that there may be a connection between autoimmune disease and allergies, which are also skyrocketing.
Nakazawa herself suffers from Guillain-Barre Syndrome, a paralyzing autoimmune disease similar to multiple sclerosis (MS). In her latest book, The Last Best Cure, she states that experts predict that the number of Americans who suffer from chronic conditions will rise an astonishing 37% by 2030.
While this may not sound like positive news, one good thing is that with an increase in autoimmune disease, more scientists, medical professionals and pharmaceutical companies will be encouraged to undertake research to find treatments and, ultimately, a cure for autoimmunity. I personally am hopeful that we will see enormous strides in biotechnology in my lifetime.