Relevant to this point is evidence that race-ethnic disparities exist in disorders that may cause visual impairment (i.e. diabetic retinopathy, glaucoma), [12, 13] sleep duration [14] and cardio ...

Heat exhaustion is caused by a loss of salt and water from the body, usually through excessive sweating, St John Ambulance explains. If you spend a long time in the sun or in hot weather, such as ...