Reddit can be a useful source of information, but it is important to verify the credibility of the information shared on the platform as it is user-generated content and may not always be accurate or reliable.
What is a reliable source to get information about polar bears?
For a slew of reliable information about polar bears, see
Answers.com via the Related link.
What is reliable source of health infromantion?
Unfortunately, you haven't provided a list to follow. There is
not enough information to base off of to figure out which is a
reliable source. You will have to post another question with more
information.