Home | Monitoring Health Concerns Related to Marijuana

Welcome

When Colorado became one of the first states in the nation to open retail marijuana stores in 2014, the Colorado General Assembly mandated that the Colorado Department of Public Health and Environment (CDPHE) monitor the scientific data and medical literature on marijuana use patterns and health effects associated with marijuana use.

The information presented on this website is the product of the Retail Marijuana Public Health Advisory Committee and the Marijuana Health Monitoring Section at CDPHE. It is regularly updated throughout the year to reflect the latest scientific findings.

Every two years, this website and a summary of the information it contains is presented to the Colorado State Board of Health, the Colorado Department of Revenue and the Colorado General Assembly as the “report” required per §25-1.5-110, C.R.S.

What's new:

Related Educational Resources

Subscribe to our emails

Submit a topic for us to study

Contact us

array ( 'messages' => array ( 'error' => array ( 0 => Drupal\Core\Render\Markup::__set_state(array( 'string' => 'Warning: Undefined array key "#field_name" in _ci_radio_options_remove_radio_na() (line 21 of modules/custom/ci_radio_options/ci_radio_options.module). <pre class="backtrace">_ci_radio_options_remove_radio_na(Array, Object, Array) call_user_func_array('_ci_radio_options_remove_radio_na', Array) (Line: 1010) Drupal\\Core\\Form\\FormBuilder->doBuildForm('node_page_edit_form', Array, Object) (Line: 1073) Drupal\\Core\\Form\\FormBuilder->doBuildForm('node_page_edit_form', Array, Object) (Line: 1073) Drupal\\Core\\Form\\FormBuilder->doBuildForm('node_page_edit_form', Array, Object) (Line: 1073) Drupal\\Core\\Form\\FormBuilder->doBuildForm('node_page_edit_form', Array, Object) (Line: 1073) Drupal\\Core\\Form\\FormBuilder->doBuildForm('node_page_edit_form', Array, Object) (Line: 1073) Drupal\\Core\\Form\\FormBuilder->doBuildForm('node_page_edit_form', Array, Object) (Line: 577) Drupal\\Core\\Form\\FormBuilder->processForm('node_page_edit_form', Array, Object) (Line: 323) Drupal\\Core\\Form\\FormBuilder->buildForm(Object, Object) (Line: 73) Drupal\\Core\\Controller\\FormController->getContentResult(Object, Object) call_user_func_array(Array, Array) (Line: 123) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->Drupal\\Core\\EventSubscriber\\{closure}() (Line: 580) Drupal\\Core\\Render\\Renderer->executeInRenderContext(Object, Object) (Line: 124) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->Drupal\\Core\\EventSubscriber\\{closure}() (Line: 169) Symfony\\Component\\HttpKernel\\HttpKernel->handleRaw(Object, 1) (Line: 81) Symfony\\Component\\HttpKernel\\HttpKernel->handle(Object, 1, 1) (Line: 58) Drupal\\Core\\StackMiddleware\\Session->handle(Object, 1, 1) (Line: 48) Drupal\\Core\\StackMiddleware\\KernelPreHandle->handle(Object, 1, 1) (Line: 106) Drupal\\page_cache\\StackMiddleware\\PageCache->pass(Object, 1, 1) (Line: 85) Drupal\\page_cache\\StackMiddleware\\PageCache->handle(Object, 1, 1) (Line: 48) Drupal\\Core\\StackMiddleware\\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51) Drupal\\Core\\StackMiddleware\\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23) Stack\\StackedHttpKernel->handle(Object, 1, 1) (Line: 718) Drupal\\Core\\DrupalKernel->handle(Object) (Line: 19) </pre>', )), 1 => Drupal\Core\Render\Markup::__set_state(array( 'string' => 'Warning: Trying to access array offset on value of type null in Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->isUriFileMetadataCacheable() (line 351 of modules/contrib/file_mdm/src/Plugin/FileMetadata/FileMetadataPluginBase.php). <pre class="backtrace">Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->isUriFileMetadataCacheable() (Line: 321) Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->loadMetadataFromCache() (Line: 384) Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->getMetadata(NULL) (Line: 183) Drupal\\file_mdm\\FileMetadata->getMetadata('imagemagick_identify') (Line: 743) Drupal\\imagemagick\\Plugin\\ImageToolkit\\ImagemagickToolkit->parseFile() (Line: 53) Drupal\\Core\\Image\\Image->__construct(Object, 'public://2023-08/Allison Rosenthal_0.png') (Line: 85) Drupal\\Core\\Image\\ImageFactory->get('public://2023-08/Allison Rosenthal_0.png') (Line: 316) Drupal\\image\\Plugin\\Field\\FieldType\\ImageItem->preSave() (Line: 233) Drupal\\Core\\Field\\FieldItemList->delegateMethod('preSave') (Line: 191) Drupal\\Core\\Field\\FieldItemList->preSave() (Line: 941) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeFieldMethod('preSave', Object) (Line: 891) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeHook('presave', Object) (Line: 563) Drupal\\Core\\Entity\\EntityStorageBase->doPreSave(Object) (Line: 756) Drupal\\Core\\Entity\\ContentEntityStorageBase->doPreSave(Object) (Line: 517) Drupal\\Core\\Entity\\EntityStorageBase->save(Object) (Line: 804) Drupal\\Core\\Entity\\Sql\\SqlContentEntityStorage->save(Object) (Line: 339) Drupal\\Core\\Entity\\EntityBase->save() (Line: 267) Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\EntityReferenceItem->preSave() (Line: 256) Drupal\\entity_reference_revisions\\Plugin\\Field\\FieldType\\EntityReferenceRevisionsItem->preSave() (Line: 233) Drupal\\Core\\Field\\FieldItemList->delegateMethod('preSave') (Line: 191) Drupal\\Core\\Field\\FieldItemList->preSave() (Line: 941) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeFieldMethod('preSave', Object) (Line: 891) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeHook('presave', Object) (Line: 563) Drupal\\Core\\Entity\\EntityStorageBase->doPreSave(Object) (Line: 756) Drupal\\Core\\Entity\\ContentEntityStorageBase->doPreSave(Object) (Line: 517) Drupal\\Core\\Entity\\EntityStorageBase->save(Object) (Line: 804) Drupal\\Core\\Entity\\Sql\\SqlContentEntityStorage->save(Object) (Line: 339) Drupal\\Core\\Entity\\EntityBase->save() (Line: 267) Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\EntityReferenceItem->preSave() (Line: 256) Drupal\\entity_reference_revisions\\Plugin\\Field\\FieldType\\EntityReferenceRevisionsItem->preSave() (Line: 233) Drupal\\Core\\Field\\FieldItemList->delegateMethod('preSave') (Line: 191) Drupal\\Core\\Field\\FieldItemList->preSave() (Line: 941) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeFieldMethod('preSave', Object) (Line: 891) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeHook('presave', Object) (Line: 563) Drupal\\Core\\Entity\\EntityStorageBase->doPreSave(Object) (Line: 756) Drupal\\Core\\Entity\\ContentEntityStorageBase->doPreSave(Object) (Line: 517) Drupal\\Core\\Entity\\EntityStorageBase->save(Object) (Line: 804) Drupal\\Core\\Entity\\Sql\\SqlContentEntityStorage->save(Object) (Line: 339) Drupal\\Core\\Entity\\EntityBase->save() (Line: 270) Drupal\\node\\NodeForm->save(Array, Object) call_user_func_array(Array, Array) (Line: 114) Drupal\\Core\\Form\\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 52) Drupal\\Core\\Form\\FormSubmitter->doSubmitForm(Array, Object) (Line: 595) Drupal\\Core\\Form\\FormBuilder->processForm('node_page_edit_form', Array, Object) (Line: 323) Drupal\\Core\\Form\\FormBuilder->buildForm(Object, Object) (Line: 73) Drupal\\Core\\Controller\\FormController->getContentResult(Object, Object) call_user_func_array(Array, Array) (Line: 123) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->Drupal\\Core\\EventSubscriber\\{closure}() (Line: 580) Drupal\\Core\\Render\\Renderer->executeInRenderContext(Object, Object) (Line: 124) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->Drupal\\Core\\EventSubscriber\\{closure}() (Line: 169) Symfony\\Component\\HttpKernel\\HttpKernel->handleRaw(Object, 1) (Line: 81) Symfony\\Component\\HttpKernel\\HttpKernel->handle(Object, 1, 1) (Line: 58) Drupal\\Core\\StackMiddleware\\Session->handle(Object, 1, 1) (Line: 48) Drupal\\Core\\StackMiddleware\\KernelPreHandle->handle(Object, 1, 1) (Line: 106) Drupal\\page_cache\\StackMiddleware\\PageCache->pass(Object, 1, 1) (Line: 85) Drupal\\page_cache\\StackMiddleware\\PageCache->handle(Object, 1, 1) (Line: 48) Drupal\\Core\\StackMiddleware\\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51) Drupal\\Core\\StackMiddleware\\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23) Stack\\StackedHttpKernel->handle(Object, 1, 1) (Line: 718) Drupal\\Core\\DrupalKernel->handle(Object) (Line: 19) </pre>', )), 2 => Drupal\Core\Render\Markup::__set_state(array( 'string' => 'Warning: Trying to access array offset on value of type null in Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->isUriFileMetadataCacheable() (line 351 of modules/contrib/file_mdm/src/Plugin/FileMetadata/FileMetadataPluginBase.php). <pre class="backtrace">Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->isUriFileMetadataCacheable() (Line: 513) Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->saveMetadataToCache() (Line: 298) Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->loadMetadataFromFile() (Line: 389) Drupal\\file_mdm\\Plugin\\FileMetadata\\FileMetadataPluginBase->getMetadata(NULL) (Line: 183) Drupal\\file_mdm\\FileMetadata->getMetadata('imagemagick_identify') (Line: 743) Drupal\\imagemagick\\Plugin\\ImageToolkit\\ImagemagickToolkit->parseFile() (Line: 53) Drupal\\Core\\Image\\Image->__construct(Object, 'public://2023-08/Allison Rosenthal_0.png') (Line: 85) Drupal\\Core\\Image\\ImageFactory->get('public://2023-08/Allison Rosenthal_0.png') (Line: 316) Drupal\\image\\Plugin\\Field\\FieldType\\ImageItem->preSave() (Line: 233) Drupal\\Core\\Field\\FieldItemList->delegateMethod('preSave') (Line: 191) Drupal\\Core\\Field\\FieldItemList->preSave() (Line: 941) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeFieldMethod('preSave', Object) (Line: 891) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeHook('presave', Object) (Line: 563) Drupal\\Core\\Entity\\EntityStorageBase->doPreSave(Object) (Line: 756) Drupal\\Core\\Entity\\ContentEntityStorageBase->doPreSave(Object) (Line: 517) Drupal\\Core\\Entity\\EntityStorageBase->save(Object) (Line: 804) Drupal\\Core\\Entity\\Sql\\SqlContentEntityStorage->save(Object) (Line: 339) Drupal\\Core\\Entity\\EntityBase->save() (Line: 267) Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\EntityReferenceItem->preSave() (Line: 256) Drupal\\entity_reference_revisions\\Plugin\\Field\\FieldType\\EntityReferenceRevisionsItem->preSave() (Line: 233) Drupal\\Core\\Field\\FieldItemList->delegateMethod('preSave') (Line: 191) Drupal\\Core\\Field\\FieldItemList->preSave() (Line: 941) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeFieldMethod('preSave', Object) (Line: 891) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeHook('presave', Object) (Line: 563) Drupal\\Core\\Entity\\EntityStorageBase->doPreSave(Object) (Line: 756) Drupal\\Core\\Entity\\ContentEntityStorageBase->doPreSave(Object) (Line: 517) Drupal\\Core\\Entity\\EntityStorageBase->save(Object) (Line: 804) Drupal\\Core\\Entity\\Sql\\SqlContentEntityStorage->save(Object) (Line: 339) Drupal\\Core\\Entity\\EntityBase->save() (Line: 267) Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\EntityReferenceItem->preSave() (Line: 256) Drupal\\entity_reference_revisions\\Plugin\\Field\\FieldType\\EntityReferenceRevisionsItem->preSave() (Line: 233) Drupal\\Core\\Field\\FieldItemList->delegateMethod('preSave') (Line: 191) Drupal\\Core\\Field\\FieldItemList->preSave() (Line: 941) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeFieldMethod('preSave', Object) (Line: 891) Drupal\\Core\\Entity\\ContentEntityStorageBase->invokeHook('presave', Object) (Line: 563) Drupal\\Core\\Entity\\EntityStorageBase->doPreSave(Object) (Line: 756) Drupal\\Core\\Entity\\ContentEntityStorageBase->doPreSave(Object) (Line: 517) Drupal\\Core\\Entity\\EntityStorageBase->save(Object) (Line: 804) Drupal\\Core\\Entity\\Sql\\SqlContentEntityStorage->save(Object) (Line: 339) Drupal\\Core\\Entity\\EntityBase->save() (Line: 270) Drupal\\node\\NodeForm->save(Array, Object) call_user_func_array(Array, Array) (Line: 114) Drupal\\Core\\Form\\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 52) Drupal\\Core\\Form\\FormSubmitter->doSubmitForm(Array, Object) (Line: 595) Drupal\\Core\\Form\\FormBuilder->processForm('node_page_edit_form', Array, Object) (Line: 323) Drupal\\Core\\Form\\FormBuilder->buildForm(Object, Object) (Line: 73) Drupal\\Core\\Controller\\FormController->getContentResult(Object, Object) call_user_func_array(Array, Array) (Line: 123) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->Drupal\\Core\\EventSubscriber\\{closure}() (Line: 580) Drupal\\Core\\Render\\Renderer->executeInRenderContext(Object, Object) (Line: 124) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97) Drupal\\Core\\EventSubscriber\\EarlyRenderingControllerWrapperSubscriber->Drupal\\Core\\EventSubscriber\\{closure}() (Line: 169) Symfony\\Component\\HttpKernel\\HttpKernel->handleRaw(Object, 1) (Line: 81) Symfony\\Component\\HttpKernel\\HttpKernel->handle(Object, 1, 1) (Line: 58) Drupal\\Core\\StackMiddleware\\Session->handle(Object, 1, 1) (Line: 48) Drupal\\Core\\StackMiddleware\\KernelPreHandle->handle(Object, 1, 1) (Line: 106) Drupal\\page_cache\\StackMiddleware\\PageCache->pass(Object, 1, 1) (Line: 85) Drupal\\page_cache\\StackMiddleware\\PageCache->handle(Object, 1, 1) (Line: 48) Drupal\\Core\\StackMiddleware\\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51) Drupal\\Core\\StackMiddleware\\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23) Stack\\StackedHttpKernel->handle(Object, 1, 1) (Line: 718) Drupal\\Core\\DrupalKernel->handle(Object) (Line: 19) </pre>', )), ), 'status' => array ( 0 => Drupal\Core\Render\Markup::__set_state(array( 'string' => 'Basic page <a href="/advisory-committee" hreflang="en">Advisory Committee</a> has been updated.', )), ), ), 'url' => '/advisory-committee', 'excluded' => array ( 'uid' => false, 'excluded' => true, 'page' => false, ), )