Is building an attach bathroom permitted by the Shariah?
Building an attach bathroom and using it is permissible in light of the Shariah. While building any bathroom, care should be taken that it (i.e. the toilet seat) does not face the Ka’aba (the direction we face for Salaat) as given in. As given in Sharh Waqaya Vol. 1, Pg. No. 127.
About the ill-effects of using attach bathrooms, please talk to a doctor.
And Allah knows best.
Mufti Syed Ziauddin Naqshbandi Qadri
[Professor, Islamic Law, Jamia Nizamia,
Founder-Director Abul Hasanaat Islamic Research Center]