HMM: Weak grip may signal future health trouble for adults, children. “During the study period, those children with weak grips were over three times more likely to remain in poor health or to have declines in health than those with strong grips. Previous studies have shown that muscle weakness as measured by grip strength is a predictor of poor health in adults, but this is the first to do so in children, according to senior study author Paul Gordon.”

The question is whether exercise would help, or just mask the effect of an underlying problem.