Why did Lewis Hamilton lose his championship lead?

Question

Lewis Hamilton lost his championship lead due to some distractions. Can someone tell me the details?

Answer 1

because he didn't finish enough races in the points

Answer 2

Former world champion, Nigel Mansell believes that Lewis Hamilton could have easily kept his lead in the drivers’ standings this year if he stayed away from certain distractions. According to a magazine, Lewis admitted that family illness and falling out with his father and ex-manager Anthony affected his performance at the Korean Grand Prix. For more read: http://blogs.bettor.com/Formula-One-Lewis-Hamilton-lost-his-championship-lead-because-of-some-distractions-Nigel-Mansell-a36558