At 40, the body burns 120 fewer calories a day than at age 30, making weight control harder. Changes in the inner ear erode the ability to hear higher frequencies for men, who lose hearing more than twice as fast as women do. The eyes begin to have trouble focusing on magazines and other close objects as the lenses become thicker. With menopause, fertility ends, and lower estrogen speeds bone loss and raises the risk of heart disease. As the eye's sensitivity to contrast declines, the ability to see in dim light or under conditions of glare, or to catch sight of moving objects, diminishes.
Loss of strength becomes measurable as muscle mass diminishes.
Your 60s Making out conversations becomes harder, especially for men, as high-frequency hearing deteriorates further. The pancreas, which processes glucose, works less efficiently. Joints are stiff in the morning, particularly the knees, hips, and spine, because of wear and tear on the cartilage that cushions them. Men's sexual daydreams all but vanish after age 65. Researchers don't know why.