Bulletin Today | Personal HealthThose who think signs of cognitive decline start around age 60, a new study has some unwelcome news: Brain function could start lessening beginning at age 45. The research, published in the British Medical Journal, involved giving cognitive tests to 5,198 men and 2,192 women ages 45 to 70 three times over the course of a decade, reports the L.A. Times. The tests evaluated memory, reasoning, vocabulary, and visual and hearing comprehension. Declines were seen in all areas except vocabulary, and …