Why Americans don't like the idea of a soda tax

Here's a look at some of the top health news being talked about around the U.S. and the world today:

â€¢ There's a psychology behind what gets people revved up and mad about the suggestion of a "soda tax." "People simply hate being told what not to do," according to a Los Angeles Times blog post.

poll by twiigs.com

â€¢ The Bill and Melinda Gates Foundation announced a pledge to spend $1.5 billion over five years on maternal and child health, signaling a new focus for the foundation, the Wall Street Journal reported.

â€¢ Having post-traumatic stress disorder, or PTSD, appears to increase the chances a person will suffer from dementia, Reuters reported.

Tina Reed covers health and the environment for AnnArbor.com. You can reach her at tinareed@annarbor.com, call her at 734-623-2535 or find her on Twitter @TreedinAA.