Abstract: Methods and systems are provided for treating target cells in a target tissue. The method comprises: determining frequency and magnitude of a periodic force to be applied to the target cells to trigger a mechanically-induced apoptotic process in the target cells; and generating a sequence of programmed cycles of waves to the target tissue to apply the periodic forces to the target cells for a period of time. In some cases, the frequency, magnitude and the period of time are determined based at least in part on the type of target cells or mechanical properties of the target cells.