Researchers see the light

BLUE light could work as well as drugs to lower high blood pressure, doctors have found.

Just half an hour of blue light in a day reduces blood pressure to the same level seen in those taking tablets.

It is well known that sunlight lowers blood pressure, with people less likely to have high blood pressure in the summer than winter.

The problem is that excessive amounts of ultraviolet light, from the sun or a tanning bed, can also cause skin cancer.

Researchers at the University of Surrey found a solution using blue light, which is close to ultraviolet in the light spectrum.