India has banned the sale of electronic cigarettes, or e-cigarettes. The ban is the latest and possibly biggest move against vaping. Vapes are electronic devices that heat liquid into a cloud of vapor that users breathe in. Most users vape with a liquid that includes the drug nicotine, several other chemicals and flavoring. The ban cuts off a huge market for e-cigarette makers such as Juul Labs and Philip Morris International. Both companies planned to expand in India. India’s health ministry said the products are novel, attractive and come in many flavors, but said their use has increased very quickly in developed countries, especially among youth and children. The ban comes at a time when public officials in other countries are raising questions about the safety of vaping.