Hi Frances,
> 1. On what do you base your statement of the 10 hours of sleep required?
>
> 2. Have you ever read any of the opposing views on the vaccination
question?
> In other words, are you aware of the claims that are made that vaccination
> was not the reason that many childhood diseases declined in the
> previous 100 years ?

As far as sleep goes, I'm providing below a list of good sources for
you to check out, if you'd like to read up on the subject of sleep.

My statement is based on the theory that the amount of sleep seen in
infants (16-18 hours spread throughout the day) tapers off to 15
hours at about one year of age, finally tapering down to between 10
to 13 hours of sleep - spread throughout the day - sometime around
puberty.

The critical factor is that sleep, under "normal" circumstances
(which current lifestyles are not), would occur throughout the day
the way that it does both in other mammals as well as in human
infants and young children, (and adults who can manage to sneak it
in).

Here are some good things you can read on this, if you're
interested:
Borbely A. Secrets of Sleep. Basic Books, New York, 1986.

Chase MH et al. (Eds). Sleep Research, Vols. 1-22. Brain Information
Service/Brain Research Institute, UCLA, Los Angeles, 1972-1993.

Chase MH and Roth T (Eds). Slow Wave Sleep--Its Measurement and
Functional
Significance. Brain Information Service/Brain Research Institute,
UCLA, Los Angeles, 1990.

Dinges DF and Broughton RJ (Eds). Sleep and Alertness:
Chronobiological, Behavioral, and Medical Aspects of Napping. Raven
Press, New York, 1989.

Hartmann E. The Functions of Sleep. Yale University Press, New
Haven, 1980.

Horne J. Why We Sleep: The Function of Sleep in Humans and Other
Mammals. Oxford University Press, New York, 1988.

Kryger MH, Roth T and Dement WC. Principles and Practice of Sleep
Medicine. W.B. Saunders Company, Philadelphia, 1989.

Kupfer DJ, Monk TH and Barchas JD (Eds). Biological Rhythms & Mental
Disorders. The
Guilford Press, New York, 1988.

Lydic R and Biebuyck JF (Eds). Clinical Physiology of Sleep.
American Physiological Society, Bethesda, 1988.

Mayes A (Ed). Sleep Mechanisms and Functions in Humans and Animals:
An Evolutionary Perspective. Van Nostrand Reinhold (UK), Berkshire,
England, 1983.

McGinty DJ, Drucker-Colin R, Morrison A and Parmeggiani PL. Brain
Mechanisms of Sleep. Raven Press, New York, 1985.

Mendelson WB. Human Sleep: Research and Clinical Care. Plenum
Publishing Co., 1987.

Moore-Ede MC and Czeisler CA (Eds). Mathematical Models of the
Circadian Sleep-Wake
Cycle. Raven Press, New York, 1984.

Moore-Ede MC, Sulzman FC and Fuller CA. The Clocks that Time Us:
Physiology of the Circadian Timing System. Harvard University Press,
Cambridge, Massachusetts, 1982.

Orem J and Barnes CD (Eds). Physiology in Sleep. Academic Press, New
York, 1980.

Parkes JD. Sleep and its Disorders. Saunders, Philadelphia, 1985.

Steriade M, McCarley RW. Brainstem Control of Wakefulness and Sleep.
Plenum Press, New York, 1990.

Stunkard AJ and Baum A (Eds). Eating, Sleeping, and Sex. L. Erlbaum
Associates, Hillsdale, 1988.

The American Medical Association. Straight-talk, No-nonsense Guide
to Better Sleep, Based on the Latest Medical Research. Random House,
New York, 1984.

Webb WB. Sleep: The Gentle Tyrant. Anker Publishing Co., Bolton,
1992.