Reacción a "Reactions to study linking frequent naps to higher blood pressure and stroke"

From the available data, it is unclear whether the higher frequency of stroke and high blood pressure among participants who napped might be due to more sleep apnoea (a disorder that causes daytime sleepiness and increased risk of stroke and high blood pressure). Short naps of less than 20-30 minutes are restorative, as opposed to long naps. The latter actually reflect an insufficient night's sleep due to a sleep disorder such as apnoea, phase delay, jet lag, shift work sleep disorders or periodic leg movements, among others. 

The role of napping should be individualised for each patient to assess its impact on night-time sleep.