There are various health and medical journals available online where you can find health articles with medical terminologies. Actually, most of them have it. There are online libraries that provide this or there are actual publications that do so.
There are no specific articles that compare health diets, however there are many articles online which discuss benefits, pros and cons between various fad diets and such.
The Journal of Contingencies and Crisis Management is an excellent online resource for crisis management articles. Their website is very current having the March 2010 volume available. You can read more about the journal and delve in the archives for older articles if you would like at www3.interscience.wiley.com
You can found more about the lemon cleanse diet from your doctor, magazines, health articles, online blogs, online articles. Lemon cleanse diet is not particularly healthy though.
Homelessness is such a widespread phenomenon in the United States that there is plenty of information online. Sites like NYTimes, Urban and USAToday are good places to look for current articles.
There are many good Fitness articles and websites online. For example http://www.Fitness.com/ or http://www.msnbc.msn.com/id/3034511/ns/health-Fitness/
Current events of the day/week Articles from magazines such as Cosmo, or Askmen(online)
As of July, 2012, there are more than 4 million articles in the English Wikipedia.
Yes, there are hundreds of online articles on Fitness. Here are some them: http://www.articlecity.com/articles/health/article_9290.shtml http://crackberry.com/tags/gym-technic
Nutrition articles can be found online or in your local newspaper. Many newspaper have food/health/nutrition sections which can provide insight to your situation.
There are many places where students could find current event articles for assignments. One could try online news sites such as CNN, Fox News, NBC, or Russia Today.
You can get news and articles for your news portal by partnering with news wire services like Reuters, Associated Press, Agence France-Presse, or Bloomberg. These agencies supply news content to online news portals through subscriptions and licensing agreements. Additionally, you can source content from freelance journalists, syndication services, and guest contributors to diversify your news coverage.