Religion practically plays no role in health of human beings. However spiritual indulgence done rightly can increase body immunity to infinity. In my spiritual journey towards god for above 20 years in a go I was not affected by viral fever due to increased immunity.
I can confidently say with personal experience that spirituality can even cure cancer permanently. But this is possible only when the seeker reaches almost highest level of spirituality, a time just before becoming a Mahavira, Gautama Buddha.
Spirituality in practical life was all about indulging logically in sacred texts of different religions of world. Indulging in contemplation (chintan) all the time one can deduce the underlying meaning of sacred texts of different religions of world.
The less clutter in our brain, thinking process more organized is our health, the physique!
After all when some clusters of cells go bad one develops cancer. Through indulgence in spirituality as detailed in Bhagavad Gita one can cleanse self of all discarded cells eliminating cancer forever.
Spirituality is not what people think it is. Spirituality could never be learnt from books.
Spirituality demands demolition of ego in totality. It further demands overpowering five senses and mind. By practicing absolute celibacy we awakened our kundalini fully. This resulted in activation of dormant lying portions of brain. The moment our brain becomes 100% active one becomes a Mahavira, Gautama Buddha, Jesus Christ or Prophet Mohammed that very moment.
Spirituality was all about dissolving queries within us, queries existing from birth. When young I had so many queries within, who I am, where did I come from, where have I to go, my relationship with God, my relationship with world of souls’ atmans and even lower forms of life, what is religion, what is spirituality, what is Dharma and so on!
Indulging in spirituality when I successfully eliminated, dissolved all queries within I finally reached state of self realization, god realization 37 years of age.
This is my last manifestation on mother earth, moment I leave my mortal frame I shall attain moksha salvation.
From my personal experience I can confidently say that indulgence in religious practices (rituals) was a total waste of time on mother earth. I stopped going to temples, churches and mosques when six years of age. Thereafter it was only contemplation and contemplation (chintan) all the time. Becoming an introvert of the highest order I could indulge in self enquiry, Neti (not this, not this) all the time.
To improve our health, to maintain a perfect health path of spirituality is beyond compare.