HMD

HMD can mean:

Head-mounted display
Helmet mounted display
the ISO 3166-1 three-letter country code and an abbreviation for Heard Island and McDonald Islands
the explosive Hexamethylene triperoxide diamine, more commonly referred to as HMDT
Hyaline membrane disease; a common developmental lung surfactant deficiency, aka infant respiratory distress syndrome
Han Moo Do is a Korean-style martial art founded in Finland. It is mainly practiced in the Nordic countries.
Hammond (Amtrak station), Louisiana, United States; Amtrak station code HMD.
Hepatic microvascular dysplasia

Entertainment

HMD is a hip hop producer from Philadelphia, PA who now is located in San Francisco California. HMD is known for his intense record digging, and unique style of sampling and record scratching. His debut presents album was released by PHILAsofikal Records in December 2007, and featured hip hop legends such as Masta Ace, Wordsworth, and R.A. The Rugged Man. The album also featured UK hip hoppers Jehst and Micall Parknsun, and up and coming philly artists Reef the Lost Cauze, Adam 12, and Catastrofiks.

HMD could be seen on Joe's Blue T-Shirt (Nothing Gang Related), a Character from Capcom's popular Video Game Viewtiful Joe
HMD is also credited as a designer in the American credits to some early Capcom Video Games on the Nintendo Entertainment System (NES), including Mega Man 2. This further suggests a continuing significance of the ambiguous three-letter term at Capcom

This disambiguation page lists articles associated with the title HMD.
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HMD may also mean, Heavy Metal Detox. A supplement that detoxifies ones body of heavy metal poisining that comes from a variety of sources:

Aluminum: It may be found in many processed foods (cheeses, baking powders, cake mixes, frozen dough, self-raising flours), cosmetics, toothpastes, antiperspirants, some common medicines such as analgesics, antacids, anti-diarrheal products and anti-hemorrhoid preparations, cooking utensils, air and drinking water supplies. Symptoms may include memory loss, Alzheimer’s and dementia, inability to concentrate, malaise, tremor, jerking movements, depression and anxiety, bone loss, kidney damage and cardiac arrest.

Arsenic: Timber treatment, agricultural chemicals, mining, metal smelting, groundwater and animal growth-promoters. Arsenic can increase cancer risk, can cause grastrointestinal, cardiovascular and nervous system problems, fatigue, malaise, skiin problems, white striae on fingernails, hair loss and diabetes.

Cadmium: Cigarette smoke, refined foods, water pipes, coffee & tea, coal burning, cement, batteries, & phosphate fertilizers. One pack of cigarettes contains about 20 mcg of cadmium, or about 1mcg. Per cigarette. It may inhibit enzyme reactions and utilization of nutrients and can generate excessive free0radical activity, bone loss, kidney damage, high blood pressure and increases cancer risk.

Lead: Lead is found in paints, fuels and oils, lead shot, explorsives, fishing tackle, rubber and plastics, inks and dyes, building materials, food/drink containers, toys, hair restorers, battery manufacturing and human cremations. Lead can cause anaemia, damage the nervous system, kidneys, gastrointestinal system, heart and reproductive system. It can cause behavior problems, loss of IQ, hearing loss and poor growth in children. Children absorb 4-5 times more than adults.

Mercury: Can be found in our teeth (amalgams), in childhood vaccinations (thimerosal), in fish, as air pollution (coal0burning energy production, industry, cremating, manufacturing) and waste disposal. Also found in fungicides and pesticides.