A recent Cardiff University study has linked marijuana usage to far greater odds of psychiatric conditions involving psychosis later in life; and yet for every one study such as this, it seems that there are two studies extolling the virtues of medical marijuana. So should we be burning fields of grass, or planting more?

Why increasing spending on addictions research is the only way to reduce barriers to drug treatment…

A commonly taught technique to reduce the impact and intensity of cravings is to minimize your exposure to those triggers that provoke them. A recent study shows how hard this to do - showing that the brain sees things that we are not even consciously aware of, other than being conscious of wanting another hit...

• Cocaine addicted monkeys placed in larger and nicer cages use less cocaine.
• Cocaine addicted monkeys placed in smaller and less stimulating cages use more cocaine.

Since monkeys are a pretty good indicator of human behavior, maybe we shouldn't put people in small and sterile jail cells after we catch them using cocaine?