Gallstone

I was having pain in my lower abdomen and an ultrasound coincidently showed a 5 mm gallstone. My doctor says I should undergo gallbladder surgery. What do you think?

Your surgeon is nothing more than a scam artist. Just because you have gallstone, does not mean that you need surgery. At least 30% of the population has gallstones but that does not mean everyone needs surgery. If your gallstone does not bother you, leave it alone. Eat a low fat diet and lose weight. Finally, change your surgeon. Any surgeon who recommends surgery for coincidental findings (with the except of cancer) is only interested in making money and has little concern for your welfare. 

There are thousands of patients who have suffered serious injuries from undergoing unnecessary surgeries.