General Pattern Of

Divisions are not rigid and they change with fashion.

3 Quoted in James W (1902) Varieties of religious experience. Longmans, Harlow, and many subsequent editions of this classic. See also Leary T (1970). The politics of ecstasy. MacGibbon and Kee, London. Other editions, USA.

• Any age: alcohol; tobacco; mild dependence on hypnotics and tranquillisers; occasional use of LSD and cannabis.

• Aged 16-35 years: hard-use drugs, chiefly heroin, cocaine and amphetamines (including 'ecstasy')- Surviving users tend to reduce or relinquish heavy use as they enter middle age.

• Under 16 years: volatile inhalants, e.g. solvents of glues, aerosol sprays, vaporised (by heat) paints, 'solvent or substance' abuse, 'glue-sniffing'.

• Miscellaneous: any drug or combination of drugs reputed to alter consciousness may have a local vogue, however brief, e.g. drugs used in parkinsonism and metered aerosols for asthma.

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Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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