Saturn in 8th house of birth chart facing health issues
Saturn will give you negative results in 8th house, so always keep good care of your health , specially during mahadasha or antardasha of Saturn.
Also keep chanting beej mantra of Saturn : Aum Pram Prim Pron seh Shanicharaye Namah ॐ प्रां प्रीं प्रौं सः शनैश्चराय नमः॥ . You have to chant this mantra daily 108 times.
Keep a note that if you face any health issue during antardasha or mahadasha of Saturn , then take that seriously and never ignore that , otherwise it will be a big problem for you.
Always keep in mind “ Health is Wealth”
No, you should never wear Blue Sapphire, if you are wearing that , then remove it immediately.