Although it accounts for only 1.2% of all cancers in males, cancer of the testis accounts for about 11%-13% of all cancer deaths of men between the ages of 15-35. Testicular cancer has two peaks according to age. The first peak occurs before the age of 45 and accounts for about 90% of cases of testicular cancer.
For acne, doses of 40-300 milligrams of zinc sulfate two or three times daily with or without food have been taken by mouth for 4-12 weeks. 30-200 milligrams of zinc gluconate prior to a meal daily for 2-3 months has also been studied.
The recommended daily allowance (RDA) of copper in the United States is: 1  340Âµg (0.34mg) for children aged 1-3. 2  440Âµg (0.44mg) for children aged 4-8. 3  700Âµg (0.7mg) for preadolescents aged 9-13.  890Âµg (0.89mg) for adolescents aged 14- 1 18. 900Âµg (0.9mg) for adults of both sexes.