Dr. John R Ujda MD

What is a vaccine?Vaccines are products that enable a person to develop immunity against certain diseases. A vaccine can be given through needle injections, by aerosol, or by mouth. The polio vaccine is given in the form of mouth drops that contain live but weakened organisms. The vaccine gets into...

IntroductionMucus is a moist film, which helps keep your nose from drying out and protect your lungs from foreign substances, such as bacteria, viruses, dust, and other harmful intruders. It keeps you healthy but you may only notice it whenever you are sick. Mucus becomes thicker when you are sick,...

If you are a person who does not get adequate exposure to sunshine and also fails to have foods rich in it vitamin D, deficiency is the end result. This is very common in vegetarians, as this vitamin is mostly present in fish and eggs. Many products are now fortified with this vitamin to reduce the...

During flu season, it is difficult to keep your symptoms at bay once you have contracted the virus. Moreover, certain over-the-counter medications can cause nausea because your body is not used to being so weak, in addition to a multitude of side effects caused by these drugs. There have been...

What are Carbohydrates?The body converts the food we eat into energy. Even though we obtain calories and energy from different food sources, such as carbohydrates, fats, and proteins, our main source of energy is still from carbohydrates. The body converts these carbs into glucose, which is the main...

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,...