For those who have tried using marijuana, one of the most noticeable effects is the sudden strong desire for food. Experts now have the best explanation on why weed users have such experience.

Cannabis users, for medical purposes, has long benefited from such powerful surge in appetite after their use of weed. This has been mainly observed among cancer patients undergoing chemotherapy that are having trouble eating.

For past years, such phenomenon has been considered as a mystery among recreational and medical marijuana users. However, a study published today in Nature Neuroscience has managed to resolve such query, according to SmithsonianMag.

It was discovered that marijuana's active ingredient, tetrahydrocannabinol or THC fits into receptors in the brain's olfactory bulb. This somehow results in an increased ability to smell food and taste it better.

To put it simply, using marijuana makes a person smell and taste more accurately, therefore driving him to devour more food. THC mimics the function of a natural occurring chemical in the body called cannabinoids, altering and affecting the body in a dramatic way.

However, apart from altering the way an individual naturally crave for food, the components of cannabis could also affect other aspects of human activity. In the physical level, its chemicals affect almost every organ in the body, the nervous system, and even the immune system, according to WebMD.

By constantly smoking weed, heart rate is increased as much as two times for almost up to 3 hours. And this side-effect sometimes causes for an individual to palpitate and even have a heart attack.

Aside from the physical impact of marijuana use, the substances found in weeds also change both mind and mood. However, not all of its effect may be positive like feeling happy and relaxed.

Studies conducted revealed that constant use of weed may result in paranoia, depression, and even anxiety. Moreover, a distorted sense of time and short-term forgetfulness may also be experienced by cannabis users.