Here's a lightning round of random questions posed to our good friend Dr. Mehmet Oz, host of the "Dr. Oz Show." Question #1: Is it possible to eat TOO MANY vegetables? From a calorie standpoint, no, because you'd need to eat over 180 stalks of celery, 55 large tomatoes or 20 heads of iceberg lettuce in a single day before you'd ever start worrying about weight gain! Dr. Oz says the only time you need to worry about excess veggies is if your body's sensitive to oxalate - an acid found in vegetables like spinach, beets, carrots and sweet potatoes. That's because high levels of oxalate have been linked to a higher risk of kidney stones. Question #2: What medication combination is the most dangerous? Just about any drug mixed with alcohol is a bad idea. That's because many drugs today contain acetaminophen, a common painkiller that's recently been linked to a higher risk for liver failure. When you add alcohol to the mix, the combination can overwhelm your liver, and become deadly. Question #3 : What's the healthiest dessert to order after a meal? If it's on the menu, Dr. Oz recommends blueberry cobbler. That's because blueberries are considered a "super food," which lowers your risk of cancer, diabetes, and age-related memory loss. Just skip eating the crust, since that's where most of the fat and calories are stored. Question #4: Does it matter how close you sit to a television? The answer's "yes," but not in the way you might think. Dr. Oz says today's high definition TVs tend to have brighter screens, which may cause you to squint from the glare. That won't necessarily mess up your vision, but too much squinting will strain the muscles around your eyes, making you more prone to headaches.