New research may cast doubt on the importance of breakfast for weight loss (although it's worth noting that some experts question the validity of these findings).

Axar.az reports, still—nutritionists agree that, to keep your blood-sugar levels steady, it's important to have a nutritious meal each morning.

Need some ideas for how to start your day? We got five nutritionists to open up about what they eat in the a.m. so you can steal their healthy habits.

"I'll have a vegetable or chicken sausage frittata; hard-boiled eggs or scrambled whole eggs; or fruit or a smoothie. It’s quick, simple and easy for on-the-go.” —Katie Cavuto, M.S., R.D., the dietician for the Phillies and the Flyers.

"An egg sandwich on a whole-wheat English muffin and two cups of coffee. It's the best way to start my day to help manage my weight and fight disease." —Kristin Kirkpatrick, M.S., R.D., a wellness manager at the Cleveland Clinic Wellness Institute.

"Since my weekday mornings tend to be quite hectic, I need something filling and fast to run out the door with—so it's usually a Greek yogurt and a bag of NourishSnacks (so many of them are great mixed right into the yogurt, like Cocoa Loco and Granny's Apple Pie!)."—Joy Bauer, M.S., R.D., the nutrition and health expert for NBC's TODAY Show and founder of NourishSnacks.

"Any combination of lean protein and fiber that's easily transportable or easy to grab on-the-go. Good examples are overnight oats made with unsweetened almond milk, chia seeds, and cinnamon; I throw in a piece of fruit or cup of berries before eating. My other go-to quickie is whole-grain frozen waffles—two—with nut butter, sliced fruit, and sprinkled chia seeds." —Jaclyn London, M.S., R.D., senior clinical dietician at Mount Sinai Hospital.

"I always start the morning with a mix of protein, fiber, healthy fats, and complex carbs. This could be in the form of a Greek yogurt parfait with berries and almonds or a zucchini pancake made of eggs and shredded zucchini." —Michelle Davenport, Ph.D., R.D., a Silicon Valley nutritionist.