Now there's one more reason to shake someone's hand tightly when you meet them.
Having a weak handshake may be a harbinger of early death, according to a new study by researchers at the University of Michigan.
Study links hand grip strength to a higher risk of age-related chronic diseases, including cancer.
A weak hand grip, the researchers said, could be a sign of general muscle weakness, a known factor in many degenerative diseases.
"Given these associations, grip strength has been labeled a 'biomarker of aging,' and yet the pathways linking grip strength to adverse health outcomes are unclear," the authors write in their new report, published in the Journal of Cachexia, Sarcopenia and Muscle.
The selected researchers followed 1,275 men and women over 8 to 10 years who were about 70 years old during that period.
They then used a device that measures grip strength to test the participants every two years. After squeezing the device twice with each hand, their highest score was recorded for the study.
In addition, the researchers also took the participant's blood sample in order to study the DNA methylation levels in each participant. Having an increase in DNA methylation or having too much of it can affect your risk of developing diseases such as cancer and other cardiovascular diseases. According to experts, DNA methylation is closely related to aging and age-related diseases.
DNA methylation can be defined as a type of chemical reaction in your body where a "small molecule" called a methyl group can enter your DNA, according to the National Cancer Institute.
Researchers at the University of Michigan found that there was a link between normalized grip strength and accelerated DNA aging in both men and women, meaning that people with a lower grip strength had more methylation. of DNA.
However, the study suggested that there may be a way to combat this phenomenon and that is by making sure you have strong muscles, which is achieved through exercise.
"Maintaining muscle strength may positively influence healthy aging by protecting against accelerated DNA aging," the study states.