Could autistic people be at risk of developing health conditions?

Earlier research had shown that autistic people on average die younger than others. But why is that?

Previous studies have shown that autistic people are at higher risk of a variety of health conditions, but we don’t know what is driving these increased risks. Therefore, it is crucial to better understand the physical health of autistic adults – so we can help improve both their quality and length of life.

Our findings

1,156 autistic individuals and 1,212 non-autistic individuals took part in an anonymous, online survey developed by the team about their lifestyle choices and daily habits, personal and family medical history.

The results indicate that autistic individuals are, on average, 1.5 to 4.3 times as likely to have a wide variety of health conditions, including low blood pressure, arrhythmia, asthma, and pre-diabetes. 

This new study is also the first to examine the influence of smoking, alcohol use, and BMI. Surprisingly, the results show that these lifestyle factors (which increase the risk of chronic physical health problems in the general population) do not account for the heightened risk of heart, lung, and diabetic conditions seen among autistic adults.

The study also explored the experiences of female respondents and of older adults, both of whom remain understudied groups.

The results revealed that autistic females, even more so than autistic males, are more likely to report increased risks of physical health conditions.

In addition, the types of conditions of risk depend on the person’s biological sex. For example, autistic females are 4.3 times more likely to have prediabetes than non-autistic females; however, autistic and non-autistic males are equally likely to have prediabetes.

These results suggest that a “one size fits all” approach to the healthcare of autistic people may not be effective.

“This is a first step in better understanding why autistic individuals are so much more likely to have chronic physical health problems. While smoking, alcohol, and BMI may play a role, we now need to focus on what other biological (e.g. genetic, hormonal, etc), environmental, lifestyle (e.g. diet, exercise, sleep, etc) or healthcare-related factors are contributing to these health disparities.”

Elizabeth Weir, PHD Student who led the study

“This new study highlights the physical health risks to autistic individuals, and has important implications for their healthcare. Understanding the reasons why these disparities exist will allow us to better support autistic individuals and improve the quality and length of their lives.”

Professor Simon Baron-Cohen, Director of the Autism Research Centre at Cambridge

Funding for this project was provided by the Autism Research Trust, the Rosetrees Trust, and the Cambridgeshire and Peterborough NHS Foundation Trust. 

Weir, E at al. Increased prevalence of non-communicable physical health conditions among autistic adults. Autism; 9 Sept 2020; DOI: 10.1177/1362361320953652