Can eating too much starfruit cause poisoning?

Generally, eating too much carambola (star fruit) may lead to poisoning. The detailed explanation is as follows:

Carambola contains a relatively high amount of oxalic acid, which, when consumed in excess, may irritate the gastrointestinal tract, causing symptoms such as nausea, vomiting, and diarrhea. Oxalic acid may also bind with calcium to form calcium oxalate, affecting calcium absorption and potentially leading to osteoporosis over time. Individuals with impaired kidney function may experience oxalate accumulation in the body when consuming excessive oxalic acid, leading to oxalic acid poisoning, which can be life-threatening in severe cases.

Carambola also contains a neurotoxin that healthy individuals can excrete through the kidneys. However, those with kidney dysfunction are unable to eliminate it, which may lead to poisoning symptoms. This neurotoxin may enter the brain and produce excitotoxic effects, potentially causing seizures and confusion. Symptoms of carambola poisoning include nausea, vomiting, persistent hiccups, hematuria (blood in urine), proteinuria (protein in urine), insomnia, limb numbness, and more. In severe cases, poisoning can lead to impaired consciousness, coma, shock, and even endanger life.

It is recommended to consume carambola in moderation to avoid poisoning caused by excessive intake. Patients with kidney insufficiency, diabetes, or kidney disease should avoid consuming carambola to prevent poisoning. If discomfort occurs, seek medical attention promptly. Additionally, maintain a balanced diet by diversifying fruit consumption and avoid excessive intake of any single food item.