Thomas James Mulhearn M.D.

What is cholesterol?Cholesterol is primarily produced in the liver, which makes approximately 1,000 milligrams of cholesterol per day. However, it can also be produced by the cells lining the small intestines and also by each cell present in the body. Abnormally low cholesterol levels would mean...

What Is Left-Sided Congestive Heart Failure?Heart failure means your heart is not able to work as well as it once did.Left-sided congestive failure is a critical condition in which the left side of the heart doesn’t pump blood efficiently. It is unable to meet the body’s metabolic needs,...

Experts are of the opinion that phytosterols improve the body’s ability to lower cholesterol levels. Like other cholesterol-lowering foods, including salmon and oats, phytosterols are supposed to lower the levels of ‘bad’ cholesterol, LDL. Phytosterols, or plant sterols and stanol esters, are...

Causes of Fainting A person faints or loses consciousness for a brief time when the brain does not get enough oxygen. Fainting or passing out is also medically called syncope. Before fainting, people may experience lightheadedness, dizziness, weakness, and nausea. Others describe fainting as...

What is heart rate?The heart rate is the number of heartbeats that occur per minute. The normal heart rate depends from person-to-person. As people get older, the heart rate changes and pulse regularity may change, which can signify heart problems or other medical conditions. Your heart rate may...

IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...