Is your gut making hay fever, seasonal allergies, eczema and food intolerances worse? Here are 5 ways to fight back | Prof. Adam Fox

0:00Welcome to Zoe, Science and Nutrition, where world-leading scientists explain how their research can improve your health.

0:15In a cafe downtown, a customer notices something changing.

0:19It's just a tingle on the lips.

0:21It feels harmless.

0:22But within minutes, the situation has become life-threatening.

0:26Meanwhile, in a restaurant a few doors down, a diner feels queasy and bloated.

0:32Their eyes dart around looking for the quickest way to the toilet.

0:36Food intolerances and allergies were once rare, but within a single generation, they've exploded.

0:42Until 20 years ago, most of us had never heard the word gluten.

0:47Today, gluten-free products have their own shelf at the grocery store.

0:51Dairy food options are also widely available.

0:55In the past, these allergies were vanishingly rare, but now conditions like peanut allergy and seasonal allergies like hay fever have surged, reshaping what we can eat on a plane or put on our kids' sandwiches.