");vwo_$('head').append(_vwo_sel);return vwo_$('head')[0] && vwo_$('head')[0].lastChild;})("HEAD")}}, C_940895_64_1_2_0:{ fn:function(log,nonce=''){return (function(x) {var el,ctx=vwo_$(x); /*vwo_debug log("content","#tfa_134-L > b:nth-of-type(1)"); vwo_debug*/el=vwo_$("#tfa_134-L > b:nth-of-type(1)"),vwo_$("#tfa_134-L > b:nth-of-type(1)").each((function(){this.__vwoControlOuterHTML=this.__vwoControlOuterHTML||this.outerHTML,vwo_$(this).vwoAttr("class",""),!vwo_$(this).find('[vwo-op-1742933835357-1=""]').length&&vwo_$(this).append('(Optional)'),vwo_$(this).nonEmptyContents().eq(0).replaceWith2(document.createTextNode("In your own words, why would an Marketplace listener choose to become an donor? "))})),el=vwo_$("#tfa_134-L > b:nth-of-type(1)");})("#tfa_134-L > b:nth-of-type(1)")}}, R_940895_64_1_2_0:{ fn:function(log,nonce=''){return (function(x) { if(!vwo_$.fn.vwoRevertHtml){ return; }; var el,ctx=vwo_$(x); /*vwo_debug log("Revert","content","#tfa_134-L > b:nth-of-type(1)"); vwo_debug*/(el=vwo_$("#tfa_134-L > b:nth-of-type(1)")).revertContentOp(),el=vwo_$("#tfa_134-L > b:nth-of-type(1)");})("#tfa_134-L > b:nth-of-type(1)")}}},rules:[{"triggers":["12454053"],"tags":[{"priority":4,"data":"campaigns.39","id":"runCampaign"}]},{"triggers":["8536409"],"tags":[{"id":"metric","metricId":959027,"data":{"type":"m","campaigns":[{"g":3,"c":62}]}},{"id":"metric","metricId":959027,"data":{"type":"m","campaigns":[{"g":4,"c":63}]}},{"id":"metric","metricId":959027,"data":{"type":"m","campaigns":[{"g":4,"c":65}]}},{"id":"metric","metricId":959027,"data":{"type":"m","campaigns":[{"g":4,"c":64}]}},{"id":"metric","metricId":959027,"data":{"type":"m","campaigns":[{"g":3,"c":39}]}},{"id":"metric","metricId":959027,"data":{"type":"m","campaigns":[{"g":5,"c":48}]}}]},{"triggers":["12454062"],"tags":[{"id":"metric","metricId":0,"data":{"type":"g","campaigns":[{"g":7,"c":39}]}}]},{"triggers":["8639604"],"tags":[{"id":"metric","metricId":951908,"data":{"type":"m","campaigns":[{"g":4,"c":62}]}},{"id":"metric","metricId":951908,"data":{"type":"m","campaigns":[{"g":1,"c":63}]}},{"id":"metric","metricId":951908,"data":{"type":"m","campaigns":[{"g":1,"c":65}]}},{"id":"metric","metricId":951908,"data":{"type":"m","campaigns":[{"g":1,"c":64}]}},{"id":"metric","metricId":951908,"data":{"type":"m","campaigns":[{"g":1,"c":48}]}}]},{"triggers":["8459768"],"tags":[{"id":"metric","metricId":951905,"data":{"type":"m","campaigns":[{"g":5,"c":62}]}},{"id":"metric","metricId":951905,"data":{"type":"m","campaigns":[{"g":5,"c":63}]}},{"id":"metric","metricId":951905,"data":{"type":"m","campaigns":[{"g":5,"c":65}]}},{"id":"metric","metricId":951905,"data":{"type":"m","campaigns":[{"g":5,"c":64}]}},{"id":"metric","metricId":951905,"data":{"type":"m","campaigns":[{"g":4,"c":39}]}},{"id":"metric","metricId":951905,"data":{"type":"m","campaigns":[{"g":2,"c":48}]}}]},{"triggers":["8536412"],"tags":[{"id":"metric","metricId":959030,"data":{"type":"m","campaigns":[{"g":2,"c":62}]}},{"id":"metric","metricId":959030,"data":{"type":"m","campaigns":[{"g":3,"c":63}]}},{"id":"metric","metricId":959030,"data":{"type":"m","campaigns":[{"g":3,"c":65}]}},{"id":"metric","metricId":959030,"data":{"type":"m","campaigns":[{"g":3,"c":64}]}},{"id":"metric","metricId":959030,"data":{"type":"m","campaigns":[{"g":1,"c":39}]}},{"id":"metric","metricId":959030,"data":{"type":"m","campaigns":[{"g":4,"c":48}]}}]},{"triggers":["12454056"],"tags":[{"id":"metric","metricId":0,"data":{"type":"g","campaigns":[{"g":5,"c":39}]}}]},{"triggers":["8536415"],"tags":[{"id":"metric","metricId":959033,"data":{"type":"m","campaigns":[{"g":1,"c":62}]}},{"id":"metric","metricId":959033,"data":{"type":"m","campaigns":[{"g":2,"c":63}]}},{"id":"metric","metricId":959033,"data":{"type":"m","campaigns":[{"g":2,"c":65}]}},{"id":"metric","metricId":959033,"data":{"type":"m","campaigns":[{"g":2,"c":64}]}},{"id":"metric","metricId":959033,"data":{"type":"m","campaigns":[{"g":2,"c":39}]}},{"id":"metric","metricId":959033,"data":{"type":"m","campaigns":[{"g":3,"c":48}]}}]},{"triggers":["12928443"],"tags":[{"priority":0,"data":"campaigns.65","id":"runCampaign"}]},{"triggers":["10589191"],"tags":[{"priority":4,"data":"campaigns.62","id":"runCampaign"},{"priority":4,"data":"campaigns.63","id":"runCampaign"},{"priority":4,"data":"campaigns.64","id":"runCampaign"},{"priority":4,"data":"campaigns.48","id":"runCampaign"}]},{"triggers":["12454059"],"tags":[{"id":"metric","metricId":0,"data":{"type":"g","campaigns":[{"g":6,"c":39}]}}]},{"triggers":["8"],"tags":[{"priority":3,"id":"prePostMutation"},{"priority":2,"id":"groupCampaigns"}]},{"triggers":["9"],"tags":[{"priority":2,"id":"visibilityService"}]},{"triggers":["2"],"tags":[{"id":"runTestCampaign"}]},{"triggers":["75"],"tags":[{"id":"urlChange"}]},{"triggers":["5"],"tags":[{"id":"checkEnvironment"}]}],pages:{"ec":[{"1625289":{"inc":["o",["url","urlReg","(?i).*"]]}}]},pagesEval:{"ec":[1625289]},stags:{}}})(); ;;var commonWrapper=function(argument){if(!argument){argument={valuesGetter:function(){return{}},valuesSetter:function(){},verifyData:function(){return{}}}}const getVisitorUuid=function(){if(window._vwo_acc_id>=1037725){return window.VWO&&window.VWO.get("visitor.id")}else{return window.VWO._&&window.VWO._.cookies&&window.VWO._.cookies.get("_vwo_uuid")}};var pollInterval=100;var timeout=6e4;return function(){var accountIntegrationSettings={};var _interval=null;function waitForAnalyticsVariables(){try{accountIntegrationSettings=argument.valuesGetter();accountIntegrationSettings.visitorUuid=getVisitorUuid()}catch(error){accountIntegrationSettings=undefined}if(accountIntegrationSettings&&argument.verifyData(accountIntegrationSettings)){argument.valuesSetter(accountIntegrationSettings);return 1}return 0}var currentTime=0;_interval=setInterval((function(){currentTime=currentTime||performance.now();var result=waitForAnalyticsVariables();if(result||performance.now()-currentTime>=timeout){clearInterval(_interval)}}),pollInterval)}}; var pushBasedCommonWrapper=function(argument){var firedCamp={};if(!argument){argument={integrationName:"",getExperimentList:function(){},accountSettings:function(){},pushData:function(){}}}return function(){window.VWO=window.VWO||[];const getVisitorUuid=function(){if(window._vwo_acc_id>=1037725){return window.VWO&&window.VWO.get("visitor.id")}else{return window.VWO._&&window.VWO._.cookies&&window.VWO._.cookies.get("_vwo_uuid")}};var sendDebugLogsOld=function(expId,variationId,errorType,user_type,data){try{var errorPayload={f:argument["integrationName"]||"",a:window._vwo_acc_id,url:window.location.href,exp:expId,v:variationId,vwo_uuid:getVisitorUuid(),user_type:user_type};if(errorType=="initIntegrationCallback"){errorPayload["log_type"]="initIntegrationCallback";errorPayload["data"]=JSON.stringify(data||"")}else if(errorType=="timeout"){errorPayload["timeout"]=true}if(window.VWO._.customError){window.VWO._.customError({msg:"integration debug",url:window.location.href,lineno:"",colno:"",source:JSON.stringify(errorPayload)})}}catch(e){window.VWO._.customError&&window.VWO._.customError({msg:"integration debug failed",url:"",lineno:"",colno:"",source:""})}};var sendDebugLogs=function(expId,variationId,errorType,user_type){var eventName="vwo_debugLogs";var eventPayload={};try{eventPayload={intName:argument["integrationName"]||"",varId:variationId,expId:expId,type:errorType,vwo_uuid:getVisitorUuid(),user_type:user_type};if(window.VWO._.event){window.VWO._.event(eventName,eventPayload,{enableLogs:1})}}catch(e){eventPayload={msg:"integration event log failed",url:window.location.href};window.VWO._.event&&window.VWO._.event(eventName,eventPayload)}};const callbackFn=function(data){if(!data)return;var expId=data[1],variationId=data[2],repeated=data[0],singleCall=0,debug=0;var experimentList=argument.getExperimentList();var integrationName=argument["integrationName"]||"vwo";if(typeof argument.accountSettings==="function"){var accountSettings=argument.accountSettings();if(accountSettings){singleCall=accountSettings["singleCall"];debug=accountSettings["debug"]}}if(debug){sendDebugLogs(expId,variationId,"intCallTriggered",repeated)}if(singleCall&&(repeated==="vS"||repeated==="vSS")||firedCamp[expId]){return}window.expList=window.expList||{};var expList=window.expList[integrationName]=window.expList[integrationName]||[];if(expId&&variationId&&["VISUAL_AB","VISUAL","SPLIT_URL"].indexOf(_vwo_exp[expId].type)>-1){if(experimentList.indexOf(+expId)!==-1){firedCamp[expId]=variationId;var visitorUuid=getVisitorUuid();var pollInterval=100;var currentTime=0;var timeout=6e4;var user_type=_vwo_exp[expId].exec?"vwo-retry":"vwo-new";var interval=setInterval((function(){if(expList.indexOf(expId)!==-1){clearInterval(interval);return}currentTime=currentTime||performance.now();var toClearInterval=argument.pushData(expId,variationId,visitorUuid);if(debug&&toClearInterval){sendDebugLogsOld(expId,variationId,"",user_type);sendDebugLogs(expId,variationId,"intDataPushed",user_type)}var isTimeout=performance.now()-currentTime>=timeout;if(isTimeout&&debug){sendDebugLogsOld(expId,variationId,"timeout",user_type);sendDebugLogs(expId,variationId,"intTimeout",user_type)}if(toClearInterval||isTimeout){clearInterval(interval)}if(toClearInterval){window.expList[integrationName].push(expId)}}),pollInterval||100)}}};window.VWO.push(["onVariationApplied",callbackFn]);window.VWO.push(["onVariationShownSent",callbackFn])}}; var surveyDataCommonWrapper=function(argument){if(!argument){argument={getCampaignList:function(){return[]},surveyStatusChange:function(){},answerSubmitted:function(){}}}return function(){window.VWO=window.VWO||[];function getValuesFromAnswers(answers){var values=[];for(var i=0;i=timeout;if(toClearInterval||isTimeout){clearInterval(interval)}}),pollInterval)}}window.VWO.push(["onSurveyShown",function(data){commonSurveyCallback(data,argument.surveyStatusChange,"surveyShown")}]);window.VWO.push(["onSurveyCompleted",function(data){commonSurveyCallback(data,argument.surveyStatusChange,"surveyCompleted")}]);window.VWO.push(["onSurveyAnswerSubmitted",function(data){commonSurveyCallback(data,argument.answerSubmitted,"surveySubmitted")}])}}; (function(){var VWOOmniTemp={};window.VWOOmni=window.VWOOmni||{};for(var key in VWOOmniTemp)Object.prototype.hasOwnProperty.call(VWOOmniTemp,key)&&(window.VWOOmni[key]=VWOOmniTemp[key]);;})();(function(){window.VWO=window.VWO||[];var pollInterval=100;var _vis_data={};var intervalObj={};var analyticsTimerObj={};var experimentListObj={};window.VWO.push(["onVariationApplied",function(data){if(!data){return}var expId=data[1],variationId=data[2];if(expId&&variationId&&["VISUAL_AB","VISUAL","SPLIT_URL"].indexOf(window._vwo_exp[expId].type)>-1){}}])})();; ;var vD=VWO.data||{};VWO.data={content:{"fns":{"list":{"vn":1,"args":{"1":{}}}}},as:"r6.visualwebsiteoptimizer.com",dacdnUrl:"https://dev.visualwebsiteoptimizer.com",accountJSInfo:{"ts":1744183186,"noSS":false,"pc":{"t":0,"a":0},"rp":30}};for(var k in vD){VWO.data[k]=vD[k]};;var gcpfb=function(a,loadFunc,status,err,success){function vwoErr() {_vwo_err({message:"Google_Cdn failing for " + a + ". Trying Fallback..",code:"cloudcdnerr",status:status});} if(a.indexOf("/cdn/")!==-1){loadFunc(a.replace("cdn/",""),err,success); vwoErr(); return true;} else if(a.indexOf("/dcdn/")!==-1&&a.indexOf("evad.js") !== -1){loadFunc(a.replace("dcdn/",""),err,success); vwoErr(); return true;}};window.VWO=window.VWO || [];window.VWO._= window.VWO._ || {};window.VWO._.gcpfb=gcpfb;;var d={cookie:document.cookie,URL:document.URL,referrer:document.referrer};var w={VWO:{_:{}},location:{href:window.location.href,search:window.location.search},_vwoCc:window._vwoCc};;window._vwo_cdn="https://dev.visualwebsiteoptimizer.com/cdn/";window._vwo_apm_debug_cdn="https://dev.visualwebsiteoptimizer.com/cdn/";window.VWO._.useCdn=true;window.vwo_eT="br";window._VWO=window._VWO||{};window._VWO.fSeg={};window._VWO.dcdnUrl="/dcdn/settings.js";window.VWO.sTs=1744143119;window._VWO._vis_nc_lib=window._vwo_cdn+"edrv/nc-065d3f05fe213fcfa27fbdcaac81338bbr.js";var loadWorker=function(url){_vwo_code.load(url, { dSC: true, onloadCb: function(xhr,a){window._vwo_wt_l=true;if(xhr.status===200 ||xhr.status===304){var code="var window="+JSON.stringify(w)+",document="+JSON.stringify(d)+";window.document=document;"+xhr.responseText;var blob=new Blob([code||"throw new Error('code not found!');"],{type:"application/javascript"}),url=URL.createObjectURL(blob);window.mainThread={webWorker:new Worker(url)};window.vwoChannelFW=new MessageChannel();window.vwoChannelToW=new MessageChannel();window.mainThread.webWorker.postMessage({vwoChannelToW:vwoChannelToW.port1,vwoChannelFW:vwoChannelFW.port2},[vwoChannelToW.port1, vwoChannelFW.port2]);if(!window._vwo_mt_f)return window._vwo_wt_f=true;_vwo_code.addScript({text:window._vwo_mt_f});delete window._vwo_mt_f}else{if(gcpfb(a,loadWorker,xhr.status)){return;}_vwo_code.finish("&e=loading_failure:"+a)}}, onerrorCb: function(a){if(gcpfb(a,loadWorker)){return;}window._vwo_wt_l=true;_vwo_code.finish("&e=loading_failure:"+a);}})};loadWorker("https://dev.visualwebsiteoptimizer.com/cdn/edrv/worker-1c9fee42429b92a40520b9e729427a4cbr.js");;var _vis_opt_file;var _vis_opt_lib;if(window.VWO._.allSettings.dataStore.previewExtraSettings!=undefined&&window.VWO._.allSettings.dataStore.previewExtraSettings.isSurveyPreviewMode){var surveyHash=window.VWO._.allSettings.dataStore.plugins.LIBINFO.SURVEY_DEBUG_EVENTS.HASH;var param1="evad.js?va=";var param2="&d=debugger_new";var param3="&sp=1&a=940895&sh="+surveyHash;_vis_opt_file=vwoCode.use_existing_jquery&&typeof vwoCode.use_existing_jquery()!=="undefined"?vwoCode.use_existing_jquery()?param1+"vanj"+param2:param1+"va_gq"+param2:param1+"edrv/va_gq-1b71f70004771740c842714f98dd257abr.js"+param2;_vis_opt_file=_vis_opt_file+param3;_vis_opt_lib="https://dev.visualwebsiteoptimizer.com/dcdn/"+_vis_opt_file}else if(window.VWO._.allSettings.dataStore.mode!=undefined&&window.VWO._.allSettings.dataStore.mode=="PREVIEW"){ var path1 = 'edrv/pd_'; var path2 = window.VWO._.allSettings.dataStore.plugins.LIBINFO.EVAD.HASH + ".js"; ;_vis_opt_file=vwoCode.use_existing_jquery&&typeof vwoCode.use_existing_jquery()!=="undefined"?vwoCode.use_existing_jquery()?path1+"vanj"+path2:path1+"va_gq"+path2:path1+"edrv/va_gq-1b71f70004771740c842714f98dd257abr.js"+path2;_vis_opt_lib="https://dev.visualwebsiteoptimizer.com/cdn/"+_vis_opt_file}else{_vis_opt_file=vwoCode.use_existing_jquery&&typeof vwoCode.use_existing_jquery()!=="undefined"?vwoCode.use_existing_jquery()?"edrv/vanj-9556ee20f78ed4cbea841a8762fe78b1br.js":"edrv/va_gq-1b71f70004771740c842714f98dd257abr.js":"edrv/va_gq-1b71f70004771740c842714f98dd257abr.js"}window._vwo_library_timer=setTimeout((function(){vwoCode.removeLoaderAndOverlay&&vwoCode.removeLoaderAndOverlay();vwoCode.finish()}),vwoCode.library_tolerance&&typeof vwoCode.library_tolerance()!=="undefined"?vwoCode.library_tolerance():2500),_vis_opt_lib=typeof _vis_opt_lib=="undefined"?window._vwo_cdn+_vis_opt_file:_vis_opt_lib;var loadLib=function(url){_vwo_code.load(url, { dSC: true, onloadCb:function(xhr,a){window._vwo_mt_l=true;if(xhr.status===200 || xhr.status===304){if(!window._vwo_wt_f)return window._vwo_mt_f=xhr.responseText;_vwo_code.addScript({text:xhr.responseText});delete window._vwo_wt_f;}else{if(gcpfb(a,loadLib,xhr.status)){return;}_vwo_code.finish("&e=loading_failure:"+a);}}, onerrorCb: function(a){if(gcpfb(a,loadLib)){return;}window._vwo_mt_l=true;_vwo_code.finish("&e=loading_failure:"+a);}})};loadLib(_vis_opt_lib);VWO.load_co=function(u,opts){return window._vwo_code.load(u,opts);};;;}}catch(e){_vwo_code.finish();_vwo_code.removeLoaderAndOverlay&&_vwo_code.removeLoaderAndOverlay();_vwo_err(e);window.VWO.caE=1}})();
Big Books & Bold Ideas with Kerri Miller

The effects of vaping on the teen brain

A 15-year-old high school student uses a vaping device
A 15-year-old high school student uses a vaping device near the school's campus in Cambridge, Mass., in September 2018.
Steven Senne | AP Photo file

Even before COVID-19 took over our lives, the rise of teen vaping alarmed public health officials. 

Numbers dropped this past year, likely because of the pandemic and flavor bans. Still, about 1 out of every 5 high schoolers reported using an electronic cigarette in 2020. 

Many of them think vaping is not that harmful. Not so, say experts. Vaping causes extensive damage in the lungs, makes teens vulnerable to smoking cigarettes later in life, and might cause permanent changes to their developing brains.

Monday, two neurologists who study teens and vaping joined MPR News host Kerri Miller to talk about what the science says when it comes to vapes and the developing brain. 

Guests:

  • Marina Picciotto is a neuroscientist and professor of psychiatry and a professor of pharmacology and neuroscience in the Child Study Center at Yale School of Medicine. 

  • Shahrdad Lotfipour is a translational addiction biologist and neuroscientist at UC Irvine and the principal investigator at Lotfipour Lab. 

To listen to the full conversation you can use the audio player above.

Subscribe to the MPR News with Kerri Miller podcast on: Apple Podcasts, Google Podcasts, Spotify or RSS.

Volume Button
Volume
Now Listening To Livestream
MPR News logo
On Air
BBC World Service