The Pap smear is currently the best test available for the prevention of most cases of cervical cancer. All women between the ages of 18 and 70 should have a Pap smear every two years. Women should start having Pap smears between 18 and 20 years of age or one to two years after becoming sexually active. It is important to know that no screening test is 100 per cent accurate.
No, opiates and opioids are derived from poppies, and are narcotic pain relievers and exist in a class of depressants. Caffeine, on the other hand, is found in many plants, e.g., coffee, guarana, different types of tea, etc. It is a natural stimulant and does not, in fact, relieve pain. So, in effect, it is fairly opposite to opiates.
Caffeine is a naturally occurring chemical stimulant called trimethylxanthine. Its chemical formula is C8H10N4O2 (see Erowid: Caffeine Chemistry for an image of the molecular structure). It is a drug, and actually shares a number of traits with more notorious drugs such as amphetamines, cocaine and heroin.emember, though, that caffeine shares some traits of those much harder drugs -- including the ability to cause addiction. Many people feel as though they cannot function in the morning without a cup of coffee (and its caffeine-powered boost) to kick-start the day.