Shark Tank 'Shark Tank' star Daymond John reveals thyroid cancer diagnosis: I didn't let it attack me 05/10/2017 Shark Tank star Daymond John has revealed he recently battled thyroid cancer. Read More RELATED NEWS Bethenny Frankel and Alex Rodriguez join 'Shark Tank''Shark Tank' star Daymond John reveals thyroid cancer diagnosis: I didn't let it attack me'Shark Tank' star Daymond John gets engaged to longtime girlfriend during filming TAGS: Robin Roberts
