Vietnam veteran Lon Hodge struggled for years with Post Traumatic Stress Disorder until he got a PTSD service dog named Gander. Lon says that Gander has saved his life. Now, Lon and Gander help other vets and work to raise awareness about PTSD, veteran suicide and service dogs. Jay Shefsky has a profile. Read an interview with Fran Menley, Service Dog Trainer at Freedom Service Dogs of America, about how they rescue, train and pair dogs with veterans and people with disabilities.

We meet the Chicago doctor who claims in a provocative new book that ADHD does not exist. Read a book excerpt.

Is too much sitting linked to disabilities later in life? We chat with Northwestern University Feinberg School of Medicine professor Dorothy Dunlop, who is researching the issue. Read the full study.

Can chiropractic neck manipulations lead to strokes? We have some of your thoughts in tonight's Viewer Feedback.

In a major announcement from the nation's second largest pharmacy chain, CVS said it will stop selling tobacco products at its 7,400 stores later this year. We tell you about the huge economic impact it's going to have on the chain, and what Deerfield-based Walgreens had to say in response. Read statements in reaction to the news.

Can neck manipulations done by chiropractors lead to strokes? An article published in The Washington Post examines this risk. We discuss the issue. Read an interview.

Though the Affordable Care Act, also known as ObamaCare, has only gone into effect this year, some parts of the new law have already gone into effect in Cook County. We take a look at the early Medicaid expansion called CountyCare. Read an article and watch a web extra video.

We break down the rules Illinois has outlined for medical marijuana, and some additional restrictions Mayor Rahm Emanuel and Ald. Ed Burke would like to impose in Chicago.

The Chicago Department of Public Health is ramping up its campaign to increase teenage HPV vaccination coverage. We talk vaccinations and disease prevention with the agency’s medical director, Dr. Julie Morita. Read an interview and view graphics on HPV.

Illinois is one of 25 states that have chosen to expand Medicaid under the Affordable Care Act. We head to DuPage County to check up on the massive changes taking place in the state's health care system.

We speak with medical and policy specialists regarding the City Council ordinance passed Wednesday to regulate e-cigarettes as tobacco products. Read an interview.

A local doctor weighs in on the risks and benefits of e-cigarettes. Read the interview.

Gov. Pat Quinn asks for emergency action to protect Illinois residents from petcoke. Elizabeth Brackett reports.

Patients at Advocate Lutheran General Hospital in Park Ridge may have been exposed to antibiotic-resistant bacteria. Read an article.

We take a look at how the Affordable Care Act is doing after the first week enrollees are able to use their coverage.

Hypothermia and frostbite aren’t the only cold-related problems doctors are noticing in local emergency rooms today. We talk with Dr. Michelle Sergel about the weather’s impact on health.