The pumping function of the heart becomes less efficient; the liver and kidneys decrease in weight and their ability to filter toxins decreases; the thyroid and adrenal glands may decrease or increase the amount of hormone that they produce; there is a decrease in joint cartilage and muscle mass; dental disease is more common in older patients; and even the nervous system is affected as there is a
decrease in blood flow to the brain and a decrease in brain function.
Rawlings says it is not possible to tease out for certain whether the orthostatic hypotension was an indicator of some other underlying disease or whether the drop in blood pressure itself is the cause, though it is likely that the
reduction in blood flow to the brain, however temporary, could have lasting consequences.
In another study, Harvard Medical School researchers found that people age 50 or older who drank several cups daily of flavanol - rich cocoa had a «striking blood flow response» that evolved over several weeks — a 10 - 15 %
increase in blood flow to the brain.
Cardo needs a more thorough examination to rule out any heart condition which may cause a reduction
in blood flow to the brain and subsequent fainting spell; warm humid weather makes this worse especially if dehydrated because the blood is more viscous.