President Joe Biden has been diagnosed with sleep apnea, which can have serious health impacts for an elderly person like Biden who is 80 years old. Sleep apnea disrupts sleep and causes intermittent hypoxia that can worsen age-related cognitive decline and increase risks of stroke and heart disease. While CPAP therapy can effectively treat sleep apnea and reduce these health risks, Biden's other medical conditions like atrial fibrillation and his advanced age are also factors to consider for his health and ability to serve another presidential term. The White House physician reported Biden is currently fit for duty, but his new sleep apnea diagnosis raises additional long-term health concerns given his age.