Key points from article :
Our immune systems decline with age - known as immunosenescence.
Causes includ shrinking thymus producing fewer T cells, inflammaging, dysfunctional immune cells.
The efficient function of the immune system is known to be a determinant of longevity.
Researcher at Technion, Stanford and CytoReason have proposed an immune age.
This IMM-AGE measures how well the immune system is working.
New aging clock could give an accurate prediction of disease risk and life expectancy.
The study was published in Nature Medicine.
