Experts Say They’ve Found , the Ideal Amount of Sleep , for the Middle-Aged and Elderly.<br />CNN reports the ideal amount of sleep for middle-aged and elderly people is not too little and not too much. .<br />A study has found the right <br />amount of sleep is often right <br />around seven hours per night.<br />Those who sleep closer to seven hours <br />have better mental health and overall well-being than those who sleep more <br />or less than seven hours.<br />Those who sleep closer to seven hours <br />have better mental health and overall well-being than those who sleep more <br />or less than seven hours.<br />While we can’t say conclusively that too little or too much sleep causes cognitive problems... , Jianfeng Feng, author of study, professor China's Fudan University, via CNN.<br />...our analysis looking at individuals over a longer period of time appears <br />to support this idea. , Jianfeng Feng, author of study, professor China's Fudan University, via CNN.<br />But the reasons why older people have poorer sleep appear to be complex... , Jianfeng Feng, author of study, professor China's Fudan University, via CNN.<br />...influenced by a combination of our genetic makeup and <br />the structure of our brains. , Jianfeng Feng, author of study, professor China's Fudan University, via CNN.<br />Researchers reportedly analyzed <br />data from UK Biobank, following nearly 500,000 adults aged 38 to 73.<br />Experts say they have long believed extended sleep patterns were associated with cognitive decline, though it was unclear why.<br />This sets a mark for <br />future research and the <br />search for treatment. , Dr. Raj Dasgupta, spokesperson American <br />Academy of Sleep Medicine, via CNN.<br />Sleep is essential as we get older, and we need just as much as younger people, but it’s harder to come by. , Dr. Raj Dasgupta, spokesperson American <br />Academy of Sleep Medicine, via CNN