Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. Why Youth Vape Smoking and Tobacco Use CDC Can You Actually Get a Contact High? Green Goods Vaping Student Health & Well Being Can Vapes Make You High Bigger, stronger, and cheaper: Disposable e cigarettes have more nicotine and Vaping Cannabis Produces Stronger Effects Than Smoking Cannabis For Infrequent Users Johns Hopkins Medicine