A new piece of research has drawn a troubling link between feelings of a lack of purpose and an increased chance of developing mild cognitive impairment, a frequent precursor of dementia. Considering the fact that 33% of old people live with some form of dementia, it’s no surprise that the debilitating health condition has touched most of us. Though new research is frequently being released, including the recent belief that bacon and deli meats could increase dementia risk, it’s believed that it will affect 139 million by 2050. Personal growth could play into dementia riskScientists and doctor…