Dr. Donald J Johannessen MD

What is Alzheimer’s disease?Alzheimer's disease is an irreversible and progressive brain disorder, wherein the connections between the nerve cells or neurons are lost and ultimately die. It is also one of the most common causes of dementia that causes loss of intellectual and social skills. As the...

The scientific name of St. John’s wort is Hypericum perforatum, which is a powerful medicinal herb that has anti-inflammatory properties. This herb has been long been used due to its health benefits, especially in relieving depression. Ancient Greek physicians believed that this herb possessed a...

Depression is usually signified by extended moods of sadness and a generally low mood even when events occur that should normally lift someone’s spirits. Patients generally ignore all positive stimuli, preferring to remain in a cocoon irrespective of external circumstances. At one stage, the loss...

Parkinson’s disease affects people of ages 55-75, although it may affect younger people, too. Parkinson's disease is a neurological disorder. This disease affects the movement of muscles, their control, and balance.Symptoms of Parkinson’s Disease...

Immunotherapy, also referred as biological therapy, is a special type of cancer treatment aimed at boosting the body's immune system to help fight cancer cells. Cancer cells don’t die normally as other cells do, and divide uncontrollably with each cell making more of itself like a copy machine...

What is Parkinson’s disease?Parkinson’s disease is known to have an impact on the nerve cells in the brain that produce dopamine. It is a progressive disorder of the central nervous system that can affect body movements. The disease develops gradually, wherein there are hardly noticeable tremors...