title: why too many epochs will cause overfitting?
body: <p>I am reading the a deep learning with python book. 
  After reading chapter 4, Fighting Overfitting, I have two questions.</p>
  
  <ol>
  <li><p>Why might increasing the number of epochs cause overfitting?
  I know increasing increasing the number of epochs will involve more attempts at gradient descent, will this cause overfitting?</p></li>
  <li><p>During the process of fighting overfitting, will the accuracy be reduced ?</p></li>
  </ol>