Rising Rates of Uninsured Americans Threaten Health Outcomes

Changes in the prevalence of health insurance coverage and the distribution of coverage types are closely tied to shifts in economic trends, demographic composition and policy changes affecting access to care. Within the United States, a lack of health insurance coverage has been a persistent problem, despite the introduction of the Affordable Care Act (ACA) in 2010. Although these policy changes led to the growth of the share of insured Americans, current trends reveal that coverage is yet again on the decline.

Recently released by the Census Bureau, the 2018 Health Insurance Coverage in the United States report presents the state of health insurance coverage in the United States in 2018, revealing worrying changes in insurance trends between 2017 and 2018.

Decline in Number of Insured Individuals

According to the latest data from the Census Bureau, the percentage of Americans without health insurance rose for the first time in nearly a decade. In 2018, the rate of individuals without coverage increased to 8.5% – up 0.5% from the previous year – which is the equivalent of 27.5 million uninsured Americans. Overall, the percentage of people with health insurance coverage for all or part of 2018 in the United States was 91.5%, compared with 92.1% in 2017. The decline was also evidenced in the number of insured children – which dropped by 425,000.

Who Are the Uninsured?

Most members of the uninsured population come from low-income families, with at least one worker in the family, and tend to live in states with limited access to Medicaid. In 2018, 45% of uninsured non-elderly adults remained uninsured due to the high cost of health care coverage. Many members of the uninsured population do not have access to insurance through their employment, while others remain ineligible for financial assistance for coverage.

The growing uninsured, low-income population faces not only a lack of access to health care, but also unaffordable medical bills, which translate to medical debt. In 2018, uninsured non-elderly adults were twice as likely as their insured counterparts to have issues paying their medical bills.

The latest data also reports a significant increase in the share of Hispanic individuals without health insurance coverage, which grew to 8.7% from the prior year – the most significant change in any racial group. People of color faced a higher risk of being uninsured than their non-Hispanic white counterparts; while they make up 43% of the total non-elderly U.S. population, people of color account for over half of all non-elderly uninsured Americans, according to data from the Kaiser Family Foundation.

Furthermore, the report reveals a drop in the rate of children with health insurance coverage. More children were uninsured in 2018 than in the prior year; approximately 4.3 million children were uninsured last year – up from 425,000 in 2017. The decline in the share of lower-income children covered by Medicaid or the Children’s Health Insurance Program is in part due to the decreasing accessibility of these programs and rising costs of health insurance coverage.

Private Health Insurance Remains Steady

In 2018, private health insurance continued to be more prevalent than public health coverage and covered over 67% of the population. Employer-based insurance remains the most common form of private health insurance, covering 55.1% of the population. While the percentage of individuals with private health coverage did not statistically change within the past year, there was a notable decline in the number of people covered by Medicaid as the program becomes less accessible due to policy changes. However, the share of individuals covered by Medicare increased between 2017 and 2018 as a result of the growing aged population.

The recent trends revealed in the latest Census Bureau report show that the insurance coverage gains afforded by the Affordable Care Act are receding. Despite nationwide declines in poverty and unemployment rates, this is the first increase in the number of Americans without health insurance coverage to occur since 2009 and since the ACA was passed in 2010. While a variety of proposed public policy solutions are currently being contested, an increase in uninsured individuals threatens improvements in access to care as well as overall population health outcomes and requires urgent repair.

Can a Healthy Lifestyle Reduce Genetic Risk for Dementia?

A combination of genetic and lifestyle factors can play a role in determining an individual’s risk of Alzheimer’s disease and other types of dementia. Although most cases occur in older adults in whom multiple genes influence overall risk, high levels of LDL cholesterol, diabetes, atherosclerosis, and other health factors can further elevate risk. While some risk factors may be difficult to mitigate, others are easily modifiable – for example, weight and lipid management through a combination of lifestyle changes.

A growing body of evidence suggests that individuals who lead a healthy lifestyle – avoid smoking tobacco, engage in regular physical activity, and consume a health diet – have a lower risk of developing dementia. Previous research has investigated the impact of lifestyle factors on many other health conditions such as cardiovascular disease, however, the extent to which these variables can influence dementia risk is unknown. A new study published online in JAMA, uses data from a large population-based cohort to investigate whether adherence to a healthy lifestyle can offset existing genetic risk for dementia.

Association of Lifestyle Habits with Dementia Risk

Led by Ilianna Lourida, PhD from the University of Exeter Medical School, a team of researchers conducted a retrospective cohort study of nearly 200,000 European adults aged 60 and above to investigate whether a healthy lifestyle is associated with a reduced risk of dementia – regardless of genetic factors. At baseline, none of the participants had cognitive impairment or dementia. The main outcome was the incidence of all-cause dementia identified through hospital records.

Researchers calculated a polygenic risk score comprised of common genetic variants linked to Alzheimer’s disease and dementia risk, as well as a weighted healthy lifestyle score – which included smoking status, physical activity levels, dietary patterns, and alcohol consumption.

Healthy Lifestyle May Reduce Dementia Incidence

A total of 196,383 participants with a mean age of 64.1 were followed for a median of 8 years, during which there were 1,769 cases of incident all-cause dementia. Overall, over 68% of the cohort had followed a healthy lifestyle, 23.6% followed an intermediate lifestyle, and 8.2% followed an unfavorable lifestyle. Researchers found that 20% of individuals had high polygenic risk scores, 60% had intermediate-risk scores, and 20% had low-risk scores.

Of those with a high genetic risk, 1.23% developed dementia, compared with 0.63% of participants with low genetic risk. Meanwhile, participants with both a high genetic risk and unfavorable lifestyle developed dementia at a rate of 1.78% compared with 0.56% of participants with low genetic risk and a favorable lifestyle. Researchers found no significant interaction between genetic risk and lifestyle factors. Among individuals with high genetic risk, 1.13% of those leading a healthy lifestyle developed dementia, in comparison with the 1.78% with unfavorable lifestyle.

Risk Reduction

Dr. Lourida and her team found that an unfavorable lifestyle coupled with high genetic risk was significantly associated with a higher risk for developing dementia in older adults without pre-existing cognitive impairment. Meanwhile, a healthy lifestyle was associated with a lower dementia risk even among participants with a high genetic risk. While there was no significant interaction between genetic risk and a healthy lifestyle, a favorable lifestyle was associated with reduced dementia risk regardless of genetic factors.

Overall, the authors found an absolute risk reduction for dementia among the high genetic risk group of 0.65% associated with leading a favorable lifestyle.

The study’s authors acknowledged the trial’s limitations. Firstly, the lifestyle score used in calculations was not independently validated to indicate a high-risk lifestyle outside of trial conditions. Furthermore, there was a possibility of unmeasured confounding and reverse causation. In addition, lifestyle factors were self-reported and some cases of dementia might not have been recorded in medical records or death registers. Nonetheless, the study expands on current knowledge of neurodegenerative diseases and their connection to lifestyle choices.

“This risk reduction implies that, if lifestyle is causal, 1 case of dementia would be prevented for each 121 individuals per 10 years with high genetic risk who improved their lifestyle from unfavorable to favorable,” authors wrote. Aside from the many mental and physical health benefits associated with leading a health-conscious lifestyle, doing so may also contribute to lowering dementia risk by reducing oxidative damage, having anti-thrombotic and anti-inflammatory effects as well as increasing cerebral blood flow. Thus, it is important to encourage patients to follow a favorable lifestyle and support lifestyle interventions when necessary, especially in cases of high genetic risk.

Thyroid Awareness Month: The Connection Between Thyroid Disease and Mental Health

The end of January marks the conclusion of Thyroid Awareness Month, which aims to spread awareness of the thyroid conditions affecting over 20 million Americans. At present, many individuals live with undetected thyroid disease – up to 60% of patients are unaware of their condition. While the underlying causes of thyroid disease remain largely unknown, preventative measures are necessary, such as the routine evaluation of the thyroid to ensure early detection and diminish the risk of severe comorbidities.

Thyroid conditions can affect people of all ages, however, they affect women significantly more often than men. Symptoms of hyperthyroidism include restlessness, inability to focus, anxiety, weight loss, and tachycardia: all of which can be alleviated with appropriate treatment methods. However, emerging research reveals a connection between thyroid disease and the development of mental health conditions – which are not easily mitigated with treatment of thyroid dysfunction.

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