Author Archives: Dr. Li

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About Dr. Li

I am a professional surgeon based in Beijing, China.

Main Symptoms of Rectal Cancer

Rectal cancer grows low in the bowel, close to the anus, so changes show up early—often in the bathroom or on the toilet paper. Bright-red bleeding is the headline. You see blood on the paper or streaked on the stool, usually painless and often blamed on hemorrhoids. Thin, ribbon-like stools are typical. The tumor narrows the passage, so bowel movements become pencil-skinny and hard to pass. Urgency and tenesmus show up. You feel a strong need to go, yet only gas or mucus comes out, and the urge returns minutes later. Mucus discharge is common. Clear or pink jelly coats... Learn more

Can Kidney Stone Patients Drink Beer?

A cold beer on a hot day feels like instant relief. For anyone who has passed a kidney stone, the idea that “more urine equals faster stone exit” sounds tempting. Yet the same glass can quietly raise the level of stone-forming salts inside you. Below we walk through what we know today, in plain words, and finish with a table you can screenshot for your next cook-out. After the table you will find extra notes on beer itself, on stones, and on what readers ask next. 1. The diuretic trick is real, but short-lived Alcohol blocks the hormone that tells... Learn more

Can kidney stone patients eat steak? What doneness is appropriate?

A juicy steak feels like a reward after a long week. Yet, if you have ever passed a kidney stone, the sizzle on the plate can sound more like a warning bell than music. The good news is that you do not have to ban steak for life. You do need to watch how much you eat, how you cook it, and what you serve beside it. Below, we walk through the science in plain words, then lay out a quick table you can pin to the fridge. After that, you will find extra notes on steak, stones, and the... Learn more

Does Drinking Orange Juice Frequently Increase the Risk of Kidney Stones?

Many people enjoy a cold glass of orange juice at breakfast. Yet some worry that this daily habit might raise the chance of kidney stones. Let’s look at the facts in plain language. First, what are kidney stones? They are hard crystals that form inside the kidneys. They can hurt when they travel down the urine tube. The most common type is made of calcium and oxalate. Orange juice contains two main things that matter here: citrate and oxalate. Citrate helps stop stones because it grabs calcium and keeps it from joining oxalate. Oxalate, on the other hand, can team... Learn more

Main Symptoms of Colon Polyps

Colon polyps are small, fleshy bumps on the inside wall of the large bowel. Most are silent, but larger or fragile ones can send quiet warnings. Painless bleeding is the classic clue. You may see bright red streaks on the toilet paper or notice the water in the bowl looks pink. Stool color can change. Dark, tar-like stools appear if the polyp bleeds higher up in the colon. Mucus threads are common. The stool looks slimy or shiny, as though it’s been wrapped in clear jelly. Bowel habits shift. You swing between loose stools and constipation, or feel the urge... Learn more