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Every January I'm surprised by how many people make long-range resolutions but overlook what they could do to protect their health right now. I'm not just talking about warding off the flu—with the bitter cold comes a blizzard of ailments that can affect everything from your skin to your heart. The good news: These conditions are all preventable if you take simple precautions to safeguard your body. As you write your health goals for the year, put my solutions for these common winter hazards at the top of your list.