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/nat·u·ral/ (nach´ah-r'l) neither artificial nor pathologic.

family planning, natural

methods of preventing conception without the use of artificial contraceptive means. Also called fertility awareness methods. See also contraception.


Substance abuse A substance causing euphoria and analgesia at the desired abuse levels and physical dependence and CNS depression, stupor, coma and death in excess. See Opiates.
Narcotic types
Natural Products extracted from the poppy plant, yielding morphine and heroin, or the coca plant, yielding cocaine and crack
Semi-synthetic Products with opiate activity, eg meperidine and methadone or synthetics, see MPTP; under the umbrella term of narcotic, alkaloids, eg LSD, mescaline, barbiturates, alcohol, marijuana, cocaine, hallucinogens and stimulants, eg antidepressants.
Completely synthetic Products created by synthesis alone, eg fentanyl  


occurs in nature, without the intervention of humans.

natural experiments
occur by chance when all variables for a population are constant except one, which is different for one large part of the population compared with the other, e.g. when half of a flock comes from one climate and the other half is a local resident in another climate.
natural focus
the ecology that is best suited to a biological system, e.g. an individual insect-borne disease; the area in which the disease naturally flourishes best; an ecological niche.
natural history
history of a process or organism as it occurs in nature, e.g. course of a disease from infection to resolution.
natural killer (NK) cell
see natural killer cell.
natural selection
selection occurring in nature, without any human intervention, direct or indirect.
natural ventilation
ventilation without the use of artificially induced energy and the machines which it drives; the forces used are wind and the exchange of heat from within the barn and the external air, controlled by ventilation devices in the walls and the ceiling.

Patient discussion about natural

Q. What is the best natural cure for migraines? Every day I hear something else... would love it if you can share your experience...I'm sick of chemicals:)

A. stay off any products that have a any kind of a caffine content, including chocolate. try this for 3wks, ypu should notice a difference

Q. Is there a recommended natural cure for graves disease? I've been suffering from graves for a year now and really feel tired of it. I'm thinking of trying some natural medications cause the regular ones are dissapointing so far. Any experience with that??

A. I am not familiar with any natural supplements you can take for graves disease, furthermore, it is an illness where you should be on close monitoring of an endocrinologist, and have them tell you which medications you are allowed to take and what could make the situation worse. If regular treatment doesn't seem to help you much you should go for another check up to see how your thyroid is doing.

Q. Is there a natural cure for hpv?

More discussions about natural
References in periodicals archive ?
These materials were a natural focus for the elector's collection.
The report identifies forest products as a natural focus for industrial development.
The natural focus of his story is what went onbetween the end of the war and the oil boycotts of the early seventies, the period when the Japanese pulled themselves up from nothing and Detroit grew too complacent and lazy to respond.
MBs in the plantation, readymade garments, healthcare and hospitality industries would greatly benefit from the adoption of ERP and are a natural focus for software vendors.
The World Cup in June next year provides a natural focus for hooligan activity.
The opened up River Arrow and new park with play area will create a natural focus to the development to be enjoyed by all.
Health and wellness is a natural focus for food retailers, of course, since they are uniquely positioned and equipped to provide both products and advice on healthy lifestyles and nutritious eating.
With a natural focus on Abu Dhabi and the region, next week's four-day annual international exhibition is expected to bring together the regional and international real estate community, with over 4,000 national and international participants.
No natural focus of plague had ever been described in Algeria (5).
But even though music is an instinctive experience for Fred, the artistic side of the Lemon Jelly project is also a natural focus for this former contributor to The Face magazine.