Intermittent fasting is a popular a dieting plan that oscillates between defined periods of eating and not eating.<br />The benefits of intermittent fasting are still being studied.<br />However, Business Insider reports there's evidence that the practice has negative side effects, such as hair loss, anxiety, and stress.<br />Always worried about what to eat next? It could be a sign of orthorexia, an obsession with healthy eating. <br />
