But both drugs have side effects, including an increased risk of serious, life-threatening infections.
In his letter, he listed numerous achievements, including an increased use of renewable energy and fewer power failures.
But they may have risks as well, including an increased risk for prostate cancer.
Shift work has been associated with a range of health problems including an increased risk of diabetes, heart disease and stroke.
Over the past several years, studies have suggested that mercury may also cause health problems for adults, including an increased risk of cardiovascular disease and neurological symptoms.
"There are things going on that we don't understand," including an increased incidence of otters being killed by sharks.
But Greenspan says this is a bad idea, because Leuprolide's possible side effects — including an increased risk of osteoporosis — outweigh the benefits for girls that age.
Previous studies have linked being overweight as a teenager or young adult to deadly consequences later in life, including an increased risk of heart disease.
This was due to a number of factors within companies, including an increased sophistication in sales promotion techniques and greater pressure to increase sales.
Many short-term and long-term consequences are well known, including an increased risk of developing new cancers decades after successful treatment.
However, health experts have pointed out that the long-term use of some drugs used in chemical castration may lead to serious and permanent side-effects, including an increased risk of cardiovascular disease and osteoporosis.
