There is a huge crop of Longgan north of Chiang Mai this year and all the farmers are complaining about mouth pain from eating too much.     We had 1500 pounds taken off our trees yesterday so I tried to emulate this medical condition by eating as many as possible.  No symptoms.    My  wife warned me to not eat too many, and there were indeed farmers walking by that would not talk, complaining of "Longgan Mouth".   So what is it?    Time to go eat some more. . . .

My wife always warns me to not eat to many longans. She thinks one can even get fever from eating to much. Have you ever heard of that?

Those are the same tales up here in our area and the reason for my post.  I have been eating them like crazy but no problems!   

 

It's been long an Asian thingy... Chinese and Thais call it heaty/heatiness (ron nai ร้อนใน).

 

Western term it high level of metabolic rate. Chinese term it heatiness, seems to happen when you consume a lot of heaty type foods (can do a search for them), hot weather, not drinking enough water, drinking too much coffee, chocolate drinks, some types of chinese soups with special herbs meant to nourish the bood (usually meant for pregnant or anemic women). The best state is to be balanced. Not too heaty or cold.

 

It causes nose bleed, mouth ulcers... fever.

 

It is more of a Chinese and Thais terminology... Caucasians do get heatiness too but they just don't have the concept of "heatiness". So there is no use of such "blanket" terms to describe such problems. It's usually described as sore throat, digestive problem, etc.

 

 

Coconut and watermelon are cooling fruit, Black jelly aka Chow Kway and Beer are cooling too.

 

Durian, Longan and Mangosteen are consider heaty fruit... Too much Guinness Stout causes heatiness too.