I have a pacemaker, can I wear a magnetic bracelet?
No, magnetic bracelets should not be worn with a pacemaker or other implant that might be affected by magnetic fields.
One of the problems with magnetic jewellery is that it is very easy to get it very near the pacemaker: That’s particularly true of bracelets worn during sleep, as we are never sure where we are going to put our hands during sleep. Also, magnetic jewellery around the neck can easily swing around right over the pacer.
(However, a magnetic bracelet will not affect titanium implants)