"The meth rush is, like, the greatest feeling in the world, the rush lasts about 30 seconds after you've injected it,' explains Mary. 'But after a couple of hours, you start coming down and you get really edgy. Everything irritates you.. You can't eat, you can't drink.
 (Meth busting, Inland Northwest News, August 30, 2001)

Increased HIV and hepatitis B and C transmission are likely consequences of increased meth abuse, particularly in individuals who inject the drug and share injection equipment.

In nearly one-third of Americans infected with  HIV, injection drug use is a risk factor, making drug abuse the fastest growing vector for the spread of HIV in the nation.

Research also indicates that meth and related psychomotor stimulants can increase the libido in users.  The combination of injection and sexual risks may result in HIV becoming a greater problem among meth users than among opiate and the use of other drugs.

Male drug abusers represent nearly one-fifth of AIDS cases in the U.S. In some cities in the western United States meth-abusing men who have sex with men (MSMs) may constitute as many as 80 to 90 percent of all AIDS cases.