Imagine you've been introduced to a delightful tropical fruit with a pulpy inside that tastes like a tart citrus-melon crossover and offers many health benefits . You dive right in, only to discover that your food from paradise isn't so heavenly for your system.

That's what happens to some people when they eat passion fruit or one of its byproducts (e.g., juice). Instead of being able to enjoy the experience, they may break out in hives, begin to wheeze, get itchy, or even feel like they can't breathe. In other words, they have allergic reactions to the fruit they've just consumed.

What causes passion fruit allergies? You can blame specific proteins known as class I chitinases, which are present in passion fruit. These proteins trigger some people's bodies to overreact and release che

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