[shmageggy]

In addition to unwarranted positivity, unwanted diet advice, and alternative medicine suggestions, I'd add one more to his list of "creatures skulking about": unwanted religious messages. As a non-Christian, if I were dying of cancer I'd really want to not spend my remaining time hearing about stuff like this. If it works for you, great, but to others who aren't sold on it, it comes off as univited at best and rude or offensive at worst.