What food should i avoid to shrink the small renal cyst in my left kidney?

No relation: There is no known correlation between food and renal cysts.

Renal Cyst: Small kidney cyst requires no intervention. No dietary restrictions unless lab data indicates otherwise.

Cyst in kidney: Avoid saturated fats from animals. Avoid salt. Take in 4 liters of water per day. Eat and drink lemon and lemon extract.

Unrelated: Hi,Simple cysts are very common incidental findings.Prevelance in adults ranges between 3 and 10%. They are harmless and give no symptoms unless they are quite large and pressing on other organs. Diet has nothing to do with it. I am referring to simple cysts(referred to as Bosniak class 1).Don't worry about your small cyst.