HOUSTON: Recent research has found that Parkinson’s disease, Lewy body dementia and REM sleep behaviour disorder are all related. When we are asleep our body goes through different sleep phases, the deepest of which is known as rapid eye movement, or REM. During normal REM our body becomes temporarily paralysed, and this is where we beginning dreaming. People with REM sleep behaviour disorder (RBD) do not become paralysed and instead act out their dreams. This can be quite dangerous, not only for the individual, but for others around them as well…