Over the years, researchers have identified genetic risk factors for a range of conditions.
As genetic testing has become quicker, more cost-effective, and increasingly accurate, DNA tests have become relatively common.
Each year, millions of people access information about their genetic risk of developing conditions such as Alzheimer’s.
Some estimate that in 2017 alone, 1 in 25 people in the United States purchased personalized genetic tests.
One of the reasons why experts carry out these tests is to inform an individual what conditions they might be at increased risk of developing, giving them the impetus to make lifestyle changes to reduce the risk.