Disclaimer: This isn't exactly kitchen medicine but I thought it interesting enough to share here.
Do you spend hours working at a computer? If you do and you ever get 'brain fog' or dry eyes from looking at a computer screen for long periods of time some Swiss researchers have a solution for you. These researchers state that keeping a potted cactus plant near your computer will boost concentration and help ward away dry and tired eyes. Would you believe cacti have unique compounds that counteract electromagnetic radiation from computer screens. This is believed to be a survival mechanism for cacti that has developed to cope with exposure to harsh solar radiation.