EXCLUSIVE: Kim Kardashian encouraged her family into the idea of completing a Horvath Test during The Kardashians season 5. Now, the CEO of the company that carried out the tests, TruDiagnostic’s Dr Matt Dawson, gives Reality Tidbit the lowdown on the stars’ results and how rare Khloé Kardashian’s young result really is. It’s no secret that Khloé Kardashian is looking incredible these days. A recent change of her hair color has fans saying she’s “morphing back into her old self.” Others say the 40-year-old reality TV star is “aging backward,” and she quite literally is from the results of the …