Dihydrogen monoxide is colorless, odorless, tasteless, and kills uncounted thousands of people every year. Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there. Prolonged exposure to its solid form causes severe tissue damage. Symptoms of DHMO ingestion can include excessive sweating and urination, and possibly a bloated feeling, nausea, vomiting and body electrolyte imbalance. For those who have become dependent, DHMO withdrawal means certain death.

Dihydrogen monoxide:
- is the major component of acid rain
- contributes to the "greenhouse effect"
- it can cause severe burns in its gaseous state
- contributes to erosion
- accelerates corrosion and rusting of many metals
- may cause electrical failures and decreased effectiveness of automobile brakes
- has been found in tumors of terminal cancer patients