One woman has shared how she started getting violent allergic reactions when eating certain foods. Lisa O'Brien said she ...

Until her mid-40s Lisa O'Brien gave little thought to what she ate - but suddenly certain foods started to trigger strange, ...

This is the point where DAO supplements come in handy. DAO, or diamine oxidase, is an enzyme that breaks down histamine in the body. Taking a DAO supplement can help alleviate symptoms of ...

Normally, an enzyme called diamine oxidase helps break down histamine in the gut. But if you have low levels of this enzyme, histamine can accumulate. This buildup can lead to issues like ...