We already know they have soul. But this just in: Redheads may feel things more intensely too! Researchers think the same variant gene that creates ginger locks in the first place—the melanocortin-1 receptor (MC1R) gene—may also make redheads more pain-sensitive and also resistant to painkillers. One study surveyed 144 people (67 redheads and 77 brunettes), and found that redheads report more anxiety and fear about the dentist and are twice as likely not to go. Well yeah, no wonder!