"
There is plenty of help from dr google and this dr is free."
I agree with this but please remember that Dr Google has neither scientific nor medical qualifications.
I think that a healthy dose of scepticism is a good idea when interpreting a search - there is a lot of poor-quality information on the Web.
A "second opinion" from a reliable site is a good plan in my view.
Some reliable sites are:
PubMed (
http://www.ncbi.nlm.nih.gov/pubmed)
The Linus Pauling Institute (
http://lpi.oregonstate.edu/)
The Cochrane Collaboration (
http://www.cochrane.org/)
NIH (
http://www.nih.gov/)