Does cannabis stay in the body longer if you are overweight?

As laws regulating the cultivation, use, and distribution of cannabis are being relaxed in many countries, more questions arise regarding its consumption. You might encounter a drug test not only while driving, but also increasingly at workplaces where employers test their employees. Perhaps you use medical cannabis and want to avoid any troubles because you don't want to lose your job or driver's license. How long does cannabis stay in the body? Are there any factors that can prolong the elimination of cannabinoids?

The focus is usually on two most significant cannabinoids – THC and CBD. Looking at their chemical structure individually, we find similarities in the type and number of atoms. Specifically, we would find 21 carbon atoms, 30 hydrogen atoms, and 2 oxygen atoms. However, there is a significant difference in their arrangement, which ultimately plays an important role in the different effects of both cannabinoids.


THC (tetrahydrocannabinol) is a psychoactive substance that alters the user's perception, accompanied by euphoric feelings and puts a person in a "high" state. In many states, it is an illegal substance, including the Czech Republic, and can only be obtained with a prescription from authorized physicians.

CBD (cannabidiol) is also considered a psychoactive substance, which is debatable. However, it's more about semantics, because the fact remains that CBD alters a person's consciousness, but on a different level than THC. Cannabidiol does not change the user's perception and does not affect rational judgment. Despite this, CBD has many medical uses, which is why many states have now allowed its use or at least laboratory testing.

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