Department of Agriculture don't keep statistics on home growers, though seed suppliers and Internet buzz suggest strong interest
Many adults buy e cigarettes as a way to quit smoking, with evidence from Cochrane demonstrating their effectiveness, however it is important to note that using both e-cigarettes and traditional tobacco products side by side could be more harmful than smoking alone

Department of Health & Human Services | NIH | NIH Office of the Director (OD) Ministry of Education Kingdom of Saudi Arabi South African National AIDS Council Fundao Carlos Chagas Filho de Amparo Pesquisa do Estado do Rio de Janeiro JRS Biodiversity Foundation Coordenao de Aperfeioamento de Pessoal de Nvel Superior Hjrt-Lungfonden National Institute of Mental Health Gobierno de Navarra National Science Foundation Joint Founding Project of Innovation Research Institute of Xijing Hospital University of Tabriz Eunice Kennedy Shriver National Institute of Child Health and Human Development Korea Institute of Oriental Medicine Ministry of Trade, Industry and Energy (Ministry of Trade, Industry and Energy, Korea) Centre National de la Recherche Scientifique National Cancer Institute Onderzoeksraad, KU Leuven National Research Foundation of Korea (NRF) David and Lucile Packard Foundation (David & Lucile Packard Foundation) National Institutes of Health National Institute of Health Society for the Study of Addiction National Institute of Arthritis and Musculoskeletal and Skin Diseases Narodowe Centrum Nauki Princess Nourah Bint Abdulrahman University National Center for Advancing Translational Sciences Jordan University of Science and Technology Application of Metabolic Biomarkers in Predicting Postoperative Pain Intensity and Opioid Consumption in Gastric Cancer Patients Institut National de la Sant et de la Recherche Mdicale Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico Scientific Research Fund of Baotou Medical College Norges Forskningsrd Nederlandse Organisatie voor Wetenschappelijk Onderzoek U.S

In a large cross-sectional study involving the general healthy population, Ramlau-Hansen et al [80] observed a significant reduction in sperm concentration, total sperm count, and motility in smokers