Drugs like steroids are controlled substances. they are illegal and dangerous to take without a prescription. some athletes take them to?

Yes they can take steriods witch stimulate growth, if you overdose and are male then you could grow breasts and have estrogyn going through your body. if you are female then you could grow hair in more places and build mucels

Increase their body muscles faster, because this ones accelerate the process of muscle reconstruction in your body and also they give more oxygen to your muscle so they can grow 

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.

1. b vitamins2. vitamin k3. vitamin d4. examples are walnuts, seeds, tofu5.  total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, dietary fiber, sugars, protein, vitamin a, vitamin c, calcium, and iron.6. 11257. they have to contain reliable information8. less than 10%  9. i didnt read the course so im not surehope that : p