Ethanol is the addictive substance in alcoholic drinks such as beer, wines and spirits. Ethanol, a kind of depressant, can slow down brain signals.... (read more)

The carbon monoxide from smoking can reduce the ability of bloodstream to carry oxygen because it can combine with the haemoglobin in red blood... (read more)

Nicotine is the substance that can reach smokers' brain within 20 seconds. It creates a dependency so that smokers become addicted. (read more)

Thalidomide caused unexpected damage to the development of thousands of babies. The drug was originally developed as a sleeping bill, but was used by pregnant women to ease morning sickness in the late 1950s and early 1960s. As a result, over 10,000... (read more)

Before use, new medical drugs are tested in the laboratory and then trialled on human volunteers. Sometimes, drug trials can be very dangerous... (read more)

Excess salt in the diet leads to high blood pressure. It is recommend not to consume more than 6g of salt a day. Try to avoid processed food... (read more)

A high proportion of HDL compared to LDL is best to have for a healthy heart. Consuming... (read more)

LDLs (Low-Density Lipoproteins ) are bad cholesterol as they carry cholesterol from the liver to the cells of the body. They can cause heart ideas.... (read more)

The metabolic rate is the speed at which chemical reactions take place in our bodies. The rate varies according to your age,... (read more)