A 2006 study determined that 1-testosterone has a high androgenic and anabolic potency even without being metabolized, so it can be characterized as a typical anabolic steroid. 1-Testosterone binds in a manner that is highly selective to the androgen receptor (AR) and has a high potency to stimulate AR-dependent transactivation . In vivo , an equimolar dose of 1-testosterone has the same potency to stimulate the growth of the prostate , the seminal vesicles and the androgen-sensitive levator ani muscle as the reference anabolic steroid testosterone propionate , but, unlike testosterone propionate, 1-testosterone also increases liver weight. 
9) Sugar and Corn Syrup . These bad boys can lower SHBG. Unfortunately, these can lead to insulin resistance, inflammation, advanced glycation end products and many other nasty things. How does it do all this? Researchers have discovered that sugar will also lower SHBG, because it increases fat synthesis in the liver, which in turn shuts off the gene involved in SHBG synthesis. Bottom line: stay away from sugar and corn syrup even though in the short term they may raise your free testosterone.