Five people have been able to perceive a colour never before seen by human eyes, after researchers used lasers and tracking technology to selectively activate certain cells in their retinas.

Various factors, ranging from eating habits to digestive or gastrointestinal (GI) disorders, can cause stomach symptoms, such as vomiting, cramps, and changes to stool. The GI tract consists of ...

Smoking can harm your digestive system in a number of ways. Smokers tend to get heartburn and peptic ulcers more often than nonsmokers. Smoking makes those conditions harder to treat. Smoking ...

The use of CR technology has created great opportunities for the advancement of diagnosis, development of new treatments, and prevention of digestive system disease. Figure 2. Applications of CR ...