Dr. Jessica Rose Castle M.D.

Menopause is a normal process resulting from aging, in women. Menopause usually occurs between the ages of 45-years-old and 55-years-old. This is characterized by the cessation of menstruation along with a number of changes in the body, and marks the end of the reproductive period in women.Causes of...

Our body has three types of blood cells: white blood cells, red blood cells, and platelets. White blood cells (WBCs) or leukocytes are the type of cells that fights off infections in our body. The platelets work by helping our blood clot, and the red blood cells (RBCs) are the ones responsible for...

What is leptin?Leptin has been regarded as the "fat hormone", "obesity hormone", and in some cases, called the "starvation hormone". Scientists discovered leptin in the year 1994, and with its discovery, there was a lot of excitement since it was regarded as a potential hit product for weight loss...

As pigmentation cells stop producing the pigment, gray hair is the result. It may also be bleached by the accumulation of hydrogen peroxide, a chemical naturally produced in the body. In most cases, graying occurs by the time an individual is 30-years-old. Most people have gray hair by the time they...

There are several types of pneumonia that vary in their degree of seriousness. Pneumonia caused by a viral infection can make people feel very sick with fever, cough, and tiredness. However, viral pneumonia tends to go away on its own after some time. A "walking pneumonia" is a mild case of...

IntroductionCyanosis is the medical term for a bluish discoloration of the skin, nails, toes, and mucous membranes. It is generally caused by low levels of oxygen in the blood. Normally, blood appears bright red when it is fully oxygenated. However, when blood does not have enough oxygen, it turns...