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.
Lutein may also play an important role in brain health, and may help prevent cognitive decline. Those with higher levels of lutein in middle-age had more youthful neural responses than those with lower levels; Other nutrients that are important for brain health and cognition include animal-based omega-3 fats, vitamin D and B vitamins.