As cold and flu season ramps up and holiday travel begins, many people reach for vitamin C supplements to help prevent getting sick on the road. It’s a common belief that a mega-dose of vitamin C will shield you from the germs circulating at airports, train stations and packed holiday gatherings.

But here’s the truth that might surprise frequent fliers: Vitamin C supplements won’t actually give your immune system a major boost, research shows .

As a registered dietitian, I weighed in on this topic in the Holiday Helper guided audio series in the Start TODAY app . In the episode, I shared practical tips to minimize the impact travel has on your physical and mental health, from staying hydrated to choosing the best airport snacks .

One big question we tackled: Will vitamin C sup

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