What should be included: 1  The Air-Conditioning and Refrigeration Institute provides a brief explanation of how central air conditioning works 2  . Most central air conditioning systems are a split system, with the heaviest, noisiest, heat-generating components installed outdoors, and an evaporator coil indoors.
Studies show that vitamins of the B group, vitamin C, and minerals are important for normal brain functioning. Furthermore, a deficiency of any of these vitamins can lead to developmental problems in children and psychiatric illnesses in adults.
Vitamin B12, also known as cyanocobalamin, is a water-soluble vitamin that helps maintain red blood and nerve cells and is needed to make DNA. B12 may also help prevent hearing loss and cognitive decline by increasing blood flow to the inner ear and brain.