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

• Critics are slamming a tobacco product they say too closely resembles breath mints. The dissolvable tobacco products are being test marketed as part of an industry trend "to create smokeless products" in response, in part, to smoke-free air laws, the New York Times reported.

• There's been some mixed news on the multivitamin this week. In a recent study on women in Puerto Rico, researchers said they found women who took a daily multivitamin and calcium supplement had a reduced risk of developing breast cancer. But a large Swedish study came to an opposite conclusion, finding women who take multivitamins may be increasing their risk for cancer, CNN reported.

• Scientists have developed a brain implant, made partly of silk, that might be able to help people with epilepsy or spinal cord injuries by melting to the surface of the brain and creating a connection for recording signals, Reuters reported.

• Lawsuits against the maker of oral contraceptives Yasmin and Yaz claim the drugs cause a number of health problems, including deep vein thrombosis, strokes and heart attacks. But research on the contraceptives remains divided, the Los Angeles Times 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.