Have an idea, while not weight related it can affect ones lifestyle.
How about doing some articles on the things one should take care of, so our loved ones have it easier, should we become incapable of taking of our own affairs or pass away. Just got done reading a blog talking about what the family was going thru because FIL had passed away without sharing any passwords to emails, computer files, etc. When my FIL passed we had similar problems but without the computer.
Possible items to cover: do you have a will, is there a power of attorney, does someone know where all needed papers are, is needed information written down (passwords, etc) and where it can be found. Am not suggesting anything with a lot of detail but with enough information to get people, regardless of their age, thinking about the kind of things our loved ones will need some day and what happens if they do not have.