Bean Fever

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Mario sick from the Bean Fever.
“Hmmm... Green hue... Yes... Discoloration in the face... The symptoms seem to indicate... Bean Fever! No mistaking it!”
Toad doctor, Mario & Luigi: Superstar Saga

Bean Fever is a condition endemic to the Beanbean Kingdom, only encountered in Mario & Luigi: Superstar Saga and its remake, Mario & Luigi: Superstar Saga + Bowser's Minions. It causes whoever contracts it to gradually turn into a Bean over the course of three days, although it is not explicitly clarified if they turn into a Beanish Resident or a literal bean. Bean Fever can only be contracted by foreigners. A known cure to the disease is Crabbie Grass, which can be located in Guffawha Ruins.

Mario acquires this disease while in Little Fungitown after consuming a strange mushroom (Invincishroom in the original, Poison Mushroom mistaken for an Invincibility Mushroom in the remake) won at the town's arcade. Since he fell ill after eating a mushroom that he should not have eaten, it is reminiscent of food poisoning. He is diagnosed by a Toad doctor who informs Luigi of how to cure Mario. Scared at the prospect of venturing in Guffawha Ruins due to the rumors, Luigi gets himself hypnotized by Psycho Kamek (replaced by Dr. Toadley in the remake) into believing he is Mario so he gains bravery to retrieve the Crabbie Grass from Guffawha Ruins. Mario's bedridden Bean Fever state and Luigi's absence allows Cackletta (now revived as Bowletta after possessing Bowser) to abduct Princess Peach to restart her evil plans.

In Mario & Luigi: Superstar Saga + Bowser's Minions, the disease now reduces Mario's HP to 1 and his BP to 0 and this effect does not end after Luigi gives him the cure, so he has to be healed or he will be instantly knocked unconscious if he gets hit immediately after he rejoins Luigi.

Names in other languages[edit]

Language Name Meaning
Japanese マメねつ
Mame Netsu
Bean Fever

Chinese 豆豆热
Dòudou Rè
Beanbean Fever

Italian Febbre Fagiolina
Beany Fever
Korean 콩열
Kong-nyeol
Bean Fever