Both have their own health benefits when taken separately, but the two actually work together to ensure that your body is able to process their full nutritional effects. (drvitaminsolutions.com)
Genetic factors and possible nutritional effects might be some other reasons. (dog-health-handbook.com)
Mohs ME, Watson RR, Leonard - Green T. Nutritional effects of marijuana, heroin, cocaine, and nicotine. (practicalpainmanagement.com)