Fei Zhao M.D.

Recommended Articles

• How Long Can Sperm Live?

  Introduction An average man ejaculates 1/2 teaspoon to 1 teaspoon of semen. This small amount of semen contains millions of sperm cells. It only takes one sperm to fertilize an egg, but each sperm has a limited life span, which begins once it leaves a man's body.For a couple trying to have a baby,...

• What is Herpes?

  Herpes is a viral infection caused by the herpes simplex virus, which is of two types – herpes simplex type 1 (HSV-1) and herpes simplex type 2 (HSV-2). HSV-1 causes blisters and sores in and around mouth, referred to as cold sores, oral herpes, or fever blisters. In HSV-2 infection, sores are...

• What Causes Lupus?

  Lupus is an autoimmune ailment. This means that instead of your body’s regular defense system attacking viruses and bacteria, it destroys healthy tissues. This causes swelling. Symptoms include extreme fatigue, hair loss, rashes, cognitive dysfunction, severe muscle and joint pain, ulcers in the...

• Car Seats Should Not Leave the Car

  According to a study published in the journal, Pediatrics, car seats, which are supposed to protect babies from injuries in a car, have increased risk of injuries when they are used outside of the car. In this study, led by Shital N. Parikh, MD, an orthopaedic surgeon at Cincinnati Children’s...

• How Can I Improve my Metabolic Rate?

  A number of factors, apart from your genes, decide the rate at which food is broken down in our body to release much needed energy. This includes body size, age, gender, hormonal levels, and physical activity. Thankfully, metabolic rate can be increased, irrespective of gender, body size, or age.Of...

• What Is Dysuria?

  Introduction Dysuria is the medical term used to describe painful or difficult urination. The discomfort is usually characterized by a burning sensation. Most individuals who complain of painful or burning urination have a urinary tract infection. There are many health conditions that can cause...