What are the health benefits and downsides of edible mushrooms and fungi based foods? ie quorn.
Fungi, in biology, encompasses anything from yeast and mold to portobello mushrooms and death cap. As you can hopefully see, the healthiness of foods prepared from aforementioned fungi will vary quite a lot since some of them are staple foodstuffs or delicacies while others are toxic or deadly.
You mention Quorn by name, a Fusarium venenatum microfungus-based product, which is safe, just like any other food sold for consumption and approved by relevant agencies for that purpose. If it wasn't the rising sales of Quorn products which are counted in hundreds of millions would be very worrying. There is a very rare (roughly 1 in 146,000) allergic reaction to this microfungus that some people might have but as far as allergies and intolerances go there are foods with much higher levels of intolerance.
So, I guess yes, fungi are generally healthy, high in many vitamins and minerals (depending on type) and definitely have a place in anyone's diet. Unless you decide to eat the poisonous ones, of course.