Q: I've heard that some olive oil labeled as "extra virgin" really isn't. Is that true? —C.K., Staten Island, N.Y.

Several drug interaction checkers are available online that can help you determine if your prescription drugs may interact with each other, as well as over-the-counter drugs, vitamins, dietary supplements, food, and alcoholic beverages. See below for a few which don't require you to sign up or divulge any personal details.

A year after receiving approval by the Food and Drug Administration, the new weight-loss drug Belviq is finally available by prescription. But you may not want to rush out and get it. It's only approved for people who are obese, with a body-mass index of 30 or more, or who are overweight, with a BMI between 27 and 30, and also have diabetes, high blood pressure, or high cholesterol. But our medical advisers say skip the drug, and lose weight other ways. Here's why:

Electric razors, along with ties and cologne, seem like a quintessential Father's Day gift. But only 20 percent of those who use a hand razor or an electric shaver said they'd like a new electric razor for Father's Day this year, according to our recent nationally representative survey of 240 men.

Federal regulators have moved a step closer toward requiring mechanically tenderized beef to be labeled so that you are better informed about what you buy and how to cook it safely.

You have a few choices: Ask your doctor to prescribe a different drug from your insurance company's formulary. If that's not possible or your doctor says it's not a good idea, have your doctor petition your insurance company to cover the drug. If your health plan denies your request, you can file an appeal.

Researchers have long known that UV rays cause skin aging, and they've suspected that sunscreens could help prevent that. Now they have better, though not conclusive, evidence that's the case.

Perhaps prompted by all the ads for drugs such as AndroGel 1.62% and Axiron, many men attribute their lagging libido to reduced testosterone levels. But stress, depression, lack of sleep or exercise, work load, or changed feelings about your partner can all have the same negative effect on your sex drive without affecting your testosterone level.

Yes. Acetaminophen (Tylenol and generic) is actually a better choice than Advil, Motrin, or related drugs for people who take a daily aspirin but need relief for minor aches and pains.

Along with welcome transitions in life like college graduation come less welcome questions, like: What the heck am I going to do for health insurance now?

Q: I have health care coverage, but I get offers in the mail for accidental death and dismemberment policies and for additional hospital coverage, which would pay regardless of whether my regular insurance paid. Are they useful? —Betsy Lyman, Boyertown, PA

New sunscreen requirements from the Food and Drug Administration may make it easier for you to understand what you're buying. Before you shop for sunscreen, understand the terms you might find on packages and check our new sunscreen Ratings.

What dangers lurk in your backyard? Especially for young children, the risks range from the obvious (mowers and tractors) to the unexpected (poisonous plants). Here are the major danger zones—and how to minimize your child's risk this summer:

Some of hungry partygoers at your Memorial Day gathering this weekend might be crying out, Where's the beef!?! But from a food-safety perspective, a more salient question is, How well done is the beef?

Of the sunscreens in our new Ratings, two may be better choices for children and pregnant women. One is a Coppertone lotion, the other an Equate sunscreen sold in Walmart. Here's why they make good options.