substance

The study, which involved around one million women aged between 50 and 58, shows that the risks differ depending on the active substance and how the medicine is taken.

The pair want to raise awareness of the risks these new substances pose.

In recent years, TNT has started to be replaced with DNAN, but until now very little was known about how this substance impacts the environment and how long it can remain in the soil.

A doctor would prepare the substance being used to end the patient's life, but the person would take it themselves.

The colourless and odourless substance is often used in bootleg alcohol, and medical experts suggest say drinking as little as 25ml of it can be fatal.