| Estrogen | |
|---|---|
| [[File:|250px]] | |
| Abbreviation | E2 |
| Molecular formula | C18H24O2 |
| Type | Steroidal; natural |
| Administration | |
| Bioavailability | |
| Synonyms | Estradiol, 17β-estradiol, oestradiol |
| Source | Human ovaries (endogenous; pharmaceutically from yam or soy precursors |
| Ray's verdict | Overabundant and generally harmful |
Estrogen supplementation increases the risk of breast cancer by 60% in middle-aged women. https://x.com/i/status/2021576497329218014