Here’s How Dehydration Can Sneak Up On You

In February 2013, Kim Saffran was on vacation in the Bavarian Alps, where the elevation reaches 6,726 feet. The morning of a family ski trip, she was lightheaded. Thinking she’d caught a stomach bug from her 3-year-old niece, she decided to stay back in the hotel. “I ended up passing out in the hallway,” she said. […]