Thankfully, marijuana has been shown to greatly help with anxiety. Thousands of people rely on weed in different forms to help deal with feelings of anxiety and panic. It must be said, that there are also those who feel that weed with high levels of THC (tetrahydrocannabinol) may cause some people to feel anxious, while it calms down other people. Some people though, do feel a great improvement in their moods when consuming low doses of THC.