As it can be seen that some people age better than others - mostly due to their eating and exercising habits, as well as taking different healthy life choices -, it's also known that the contrary may also happen, as biological age may not necessarily be the same as chronological - and the new Alzheimer's test 2015 brings further investigation into this.

While the latest Alzheimer's test 2015 was specifically developed to measure the biological age a person might have (which is to say, how "old" their body behaves regardless of how many years the person has lived), the latest trials show the test could actually predict early signs of dementia.

According to The Independent, researchers from King's College London were the ones who developed the new Alzheimer's test 2015, and for now it's not just focused on the neurodegenerative disease, but also on organ donations, as it's able to determine the biological age of donors beforehand to avoid complications down the road.

The test looks for an "aging signature," and it came from the comparison of 54,000 markers of gene activity in sedentary but healthy people in their 20s and 60s; ultimately, the scientists lowered the markers down to 150.

BBC reports that the scientists responsible for the Alzheimer's test 2015 claim that a person's biological age is far more accurate health-wise than their chronological one; however, while being able to measure it gets research one step closer to developing prevention treatments, in fact so far there are no clues as to how to slow down aging.

"We now need to find out more about why these vast differences in ageing occur, with the hope that the test could be used to reduce the risk of developing diseases associated with age," said Professor James Timmons, the lead author of the study that brought the world the Alzheimer's test 2015, according to website Care Home.

This Alzheimer's test 2015 is the first step towards developing further treatment in this form of dementia as well as many other age-related diseases.