Do Ghosts/Bhuta exist ?
Yes, probably they exist . It is described Ayurveda that our body is made up of five elements-
Agni-Vayu-Prithvi-Akash and Jal
Or
Fire-Air-Earth-Space and Water.
So our physical body is made of Prithivi or earth/soil, and other four bodies are present aside our body surrounding it. So all this five bodies need nurishment or satisfaction. When any of these five bodies are dissatisfied they become Ghost after death of this physical body. There is method to give satisfaction to all of this five bodies it is by
Yadnya karma
This is the reason most of Hindus perform yadnya in marriages and other public programs.
If ghosts exist how they possess a physical body ?
When your elemental bodies are not satisfied they become weak. So other dissatisfied elemental bodies of dead people take place of your weak elemental body. This ghosts are called
Sanskrit-Graha/Grahas
And there possesion over physical body is called
Graha badha
They are not as evil as shown in movies but they make life miserable which can result in suicide of victim or other nasty things.
Where do ghosts/Grahas exist ?
There are three sacred trees in India
- Barh/Indian banyan tree
2.Peepal tree
3.Umbar tree
It is said that the person who has
Samrthya or power
Gives support to others
Support is called Ashraya
So this trees have sarmarthya they can live for century without dying or you can say they are Immortal ( if not cut down). So this trees give support to ghosts/Grahas. They are like a safehouse to spirits. Some houses or so called haunted houses too can contain this ghosts/grahas. So no one should disrespect this sacred trees or they can get graha badha or Ghost possesion. There is a special yadnya meant to cure graha badha but currently I can’t remember the name.
Every religion has different methods to cure this graha badha but Hinduism uses simplest technique of yadnya karma.
How yadnya cures Ghost possesion/graha badha.
In yadnya fire is started in a huge kunda.
yadnya kunda
So ghee , kamphoor etc. Materials are poored into yadnya . It called
Ahuti or sacrifice.
So the product in the form of air/smoke which comes from burning of air cleansers and some ayurvedic medicines etc. This resulting smoke(It does not contain harmful gases) nurish our akash, wayu and jal bodies (as it contains kamphoor and other air cleasers) and the burning fire nurish our agni body(It is why tratak is considered good). Our earth body/Physical body is nurished by food it does not need yadnya.
It was all about ghosts/grahas and there is no need to fear them they do not possess you or caused graha badha without some mistakes committed by you. For example disrespecting sacred trees.
This all above knowledge is from ayurvedic books — charka samhita,ashthanga-rudayam etc.
If you don’t believe you can read them on your own .
Thanks for reading.