Importance of air (oxygen), water & food (glucose) for the brain

Daily we eat around 1 kg of food, drink around 3 kg of water and we breathe around 15 kg is of air. Thus air quality is very important. We need offices that are micro-designed right down to the chemical level. Circular sustainability is a concept in which buildings, like hotels, are designed as living organisms with plants that transform food scraps and biological waste into energy and fertiliser for the kitchen gardens, which in turn supply the restaurant, ie new vegetables become new waste become new energy and new vegetables. Linked with this is the use of filtration to recycle water, which in turn finds a variety of uses. Creating algae blooms on glazing has the potential to be like a sunscreen on hot days and provide a potential energy source as biogas

- the brain is around 80% water and needs water

(NB Most unprocessed foods are around 70% water)

- need to keep glucose (energy) and water levels up to ensure that brain is functioning OK

- takes 15 minutes for glucose to go from stomach to brain

Fats and sugars
It is thought that we are hardwired to respond to fats and sugars, especially as they were rare foods in our early evolutionary times. As a result, our brains became sensitised to detecting the presence of fats and sugars. Owing to their value, our brain rewards their consumption with a powerful jolt of pleasure.

In nature there are a few, if any, naturally-occurring combinations of fat and sugar together in food that we eat. As a result, our bodies (including our brains) have not developed mechanisms to appropriately handle this combination of fats and sugars found in processed food, like chocolate. When eating these processed foods, our taste buds send positive messages to our brain about the sweet taste; this fires neuro-chemicals, like dopamine, in our brain which increases the desire for more of these substances. The over-consumption of these processed foods and our brains' positive response to processed food has helped lay the foundations for the world-wide obesity crisis. (SBS 2017).

The brain is energy-hungry, ie is 2% of the body weight but generates 20% of the body heat but consumes:

- 20% of the energy intake

- 60% of your blood glucose

- 20% of the oxygen intake

-NB executive function thinking is the most exhausting

. Lack of energy and/or water impacts adversely on executive functions, eg

- making poor decisions

- choosing impulsively

- being cranky

- struggling with problem solving/memory tasks

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