Not long ago, the suggestion that old brains could grow new nerve cells – or neurons – was unthinkable among neurologists. Today, however, we know that neural stem cells are indeed capable of growing new neurons throughout life. This process is called neurogenesis, which literally means “the birth of new neurons.” Precisely how nerve stem cells function and how they are regulated, however, have remained something of a mystery until recently.
Oral health is important to the overall well-being of older Americans. Preventive dental care can head off more expensive dental work and help prevent severe diseases. Unfortunately, dental costs are primarily out-of-pocket for those over 65, and when financially strapped, they may forego regular visits to the dentist. This decision to “do without” can have serious consequences, because the elderly suffer a disproportionate and debilitating amount of oral disease.
Say “Jack LaLanne” and most Americans over 30 will remember a dark-haired fellow, in a blue jumpsuit and impressively-muscled arms, on TV. He was performing leg lifts, or one-arm push-ups on his fingertips, and urging you to do the same. Broadcast from 1951 to 1985, The Jack LaLanne Show was the first exercise program on television.