More than half of Americans are living with one or more of these diseases, according to the Centers for Disease Control and Prevention.
Here are the top 10 most common illnesses: Chronic bronchitis: The number of Americans living with chronic bronchitic esophagitis, a chronic lung disease, has more than doubled in the past 15 years.
More than three-quarters of Americans have asthma, according the CDC.
Chronic obstructive pulmonary disease: The prevalence of chronic obstructive respiratory disease (COPD) has nearly doubled over the past decade, with more than a quarter of Americans reporting at least one COPD-related illness in the previous year.
Nearly half of those with COPD suffer from asthma.
Obesity: More than a third of adults in the U.S. have obesity, a major health problem that is linked to cardiovascular disease, diabetes and stroke.
People who are obese have a higher risk of developing diabetes, heart disease and stroke, and a lower chance of dying from them.
Diabetes: People who have type 1 diabetes are more likely to have cardiovascular disease and type 2 diabetes.
Type 2 diabetes is a disease of the pancreas, which produces insulin that makes blood sugar levels rise.
People with type 1 and type 3 diabetes are also more likely than people without diabetes to develop type 2, and type 4 diabetes.
Obesity has also been linked to an increased risk of stroke, according a 2014 study published in the New England Journal of Medicine.
Heart disease: People with high blood pressure, high cholesterol and a high blood sugar level are more at risk for heart disease, according Dr. James E. Lustig, an emergency room doctor at the Mayo Clinic in Rochester, Minnesota.
A study published earlier this year in the American Journal of Epidemiology found that people with the highest cholesterol levels are more than four times more likely of having a heart attack than those with the lowest levels.
Stroke: More people in the United States die from strokes than from all causes, according one study.
One in five Americans suffer from stroke every year, according government data.
Strokes occur when blood clots form in the brain and the brain itself can’t close.
Strokers may also lose their ability to breathe, and stroke survivors often experience symptoms such as numbness and tingling in the legs.
Lung cancer: People diagnosed with lung cancer are about four times as likely as the general population to die from the disease, and those who die from it are nearly four times less likely to die within two years, according data from the National Cancer Institute.
Heart attacks and strokes are the leading causes of death in people over 65.
Suicide: About a third or more people in America are at risk of suicide, according federal data.
In 2012, more than half (53%) of Americans said they felt suicidal at some point in their lives.
About a quarter (25%) of adults reported having attempted suicide at some time in their life.
In 2017, suicide attempts were more common in adults aged 50-64 than in adults younger than 25.
According to the National Alliance on Mental Illness, people who attempt suicide have a 1 in 20 chance of being killed by a suicide.