About 25 percent of Americans have a copy of the Alzheimer’s gene (APOE e4), tripling their risk of getting the disease.Another 2 percent have two copies of the gene, boosting their odds eightfold to twelvefold.Balin, a professor of neurobiology at the Philadelphia College of Osteopathic Medicine.

Find a good marriage counselor, and work through your relationship issues, explains Berman.

"Working through a couple's relationship issues can also help solve their financial problems," Harley tells Web MD.

New science is challenging the glum idea that nothing you do can lower your chances of getting Alzheimer’s disease.

While key risk factors — age, race, gender — have been known for a while, and they remain part of the Alzheimer’s equation, recent research has identified other potential contributors.

People with Alzheimer’s had fewer types of gut bugs than those without Alzheimer’s in a recent University of Wisconsin study.

Modern hygiene may be knocking out good bugs, contributing to the risk, researchers note.

"Our relationship dynamics and resentments get played out with money," says Jenn Berman, Ph D, a marriage and family therapist.

"It's not uncommon to see a person get mad at his or her spouse, and then go out and buy something as revenge." What's the solution?

"We created this system when we moved in together before we got married," says Maureen. But I do have to say that it would probably fall apart if we didn't communicate well about our spending, act responsibly, and make decisions together." Maureen and Dave have figured out how to mix marriage and money in a way that works for them both. "With the state of the economy, with housing issues, credit problems, more and more couples are facing serious marriage and money problems, even bankruptcy," says William Harley, Ph D, author of His Needs, Her Needs: Building an Affair-proof Marriage; Experts explain to Web MD the common financial scenarios couples often face, and offer practical tips for resolving them. Do you frequently spend money yourself, in excess, to spite your spouse because you're angry?