Scientific Relevance of Vaastu
Vaastu believes that there are essentially two types of forces which are equal and opposite in nature. The interaction of these two forces is cosmic ordained and produces a third type of force which is called 'bioforce' or 'prana' needed for life to exist. One type of force is subtle and fine. The other is dark and dense. We can ,for sake of understanding this subject, call the first one as 'positive' and the other as 'negative'. 'prana' is liberated by the interaction of these forces.
Over the surface of the globe these forces continuously interact releasing bio-energy. When a structure is built over the surface of the earth it comes in the way of a natural interaction. Both the forces enter the structure where the interaction continues. However, the intensity of forces that enter the structure need not be the same. Depending on various factors like levels, water bodies, door placement etc., either the positive or the negative can have stronger presence.
If the structure is so designed that the positive forces override the negative forces then there is a beneficial release of bio-energy which helps all the inmates to be healthy. Even after such reaction with the negative forces a positive cosmic surplus is always present in such a structure which is the Supreme Being Himself. In such an atmosphere life is smooth and happy with every thing in life coming your way without any great struggle. It is a happy and healthy life for all the inhabitants.
If on the other hand the structure is built in such a manner that the negative forces override the positive then you have a weak bio-energy field which manifests as diseases in the occupants. The over bearing negative field makes your actions, efforts, thinking negative so that ultimately the whole life is ruined.
The science of Vaastu guides you about the rules you have to follow so that the structure has a positive atmosphere.