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Stephen Juan

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Old beardy man thinking. Pic: Henadz via Flickr

Are there secrets to life-long brain power?

Are there secrets to life-long brain power? Research shows that there are. According to Dr Dharma Singh Khalsa, president and medical director of the Alzheimer's Prevention Foundation International in Tucson, Arizona and author of Brain Longevity (1997), Meditation as Medicine (2002), and Food as Medicine (2004), "your brain …
Stephen Juan, 17 Feb 2007
GlassBrain being demoed inside UCSF's Neuroscape Lab

How old is my body if the cells keep renewing themselves?

How old is my body if the cells keep renewing themselves? Asked by Jo Hopkins of Belmont, California, USA About a century ago, scientists discovered that most of our brain cells formed during fetal development persist throughout life. But this discovery stimulated other scientists to discover the age of cells throughout the …
Stephen Juan, 17 Feb 2007
Bloody Serial Killer Shower Curtain

Do we really need a daily shower or bath to stay healthy?

Asked by Sarah Murdoch and Karl Stefanovic Today, Nine TV Network, Sydney, Australia One of the most widely held myths of modern society is that we humans need to shower or take a bath each day (or even more often than that) for good health. In modern industrial society today we shower and otherwise bathe for mostly social and …
Stephen Juan, 17 Feb 2007
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Why do we like to scratch a wound when it's healing?

Also in this week's column: If whales can communicate by telepathy, why can't humans? You think you know about the brain? Why do we like to scratch a wound when it's healing? Asked by Nikki Boyle of Newtown, NSW, Australia Scratching an itch is a puzzling biological and behavioural response in any case. It is especially odd …
Stephen Juan, 10 Feb 2007
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You think you know about the brain?

Also in this week's column: If whales can communicate by telepathy, why can't humans? Why do we like to scratch a wound when it's healing? You think you know about the brain? Korsakoff's Syndrome is an inability to form new memories because of damage to the brain's temporal lobes after years of alcohol abuse. Sufferers make …
Stephen Juan, 10 Feb 2007
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If whales can communicate by telepathy, why can't humans?

Also in this week's column: You think you know about the brain? Why do we like to scratch a wound when it's healing? If whales can communicate by telepathy, why can't humans? Asked by Amy Iverson of Terrey Hills, NSW, Australia Whales possess a form of communication that allows them to signal other whales hundreds of miles …
Stephen Juan, 10 Feb 2007
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What ever happened to tuberculosis?

Also in this week's column: Great moments in human research 2: "Concluding, among other things..." What is sexsomnia? Where does the taboo against sex during menstruation originate? What ever happened to tuberculosis? Asked by Angela Karam of Ramsgate, NSW, Australia Tuberculosis (TB) in the industrial/developed world is no …
Stephen Juan, 03 Feb 2007
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Where does the taboo against sex during menstruation originate?

Also in this week's column: Great moments in human research 2: "Concluding, among other things..." What ever happened to tuberculosis? What is sexsomnia? Where does the taboo against sex during menstruation originate? Asked by Linda Phillips of Byron Bay, NSW, Australia Menstrual blood is seen as dangerous, magical, and …
Stephen Juan, 03 Feb 2007
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Great moments in human research

Also in this week's column: What ever happened to tuberculosis? What is sexsomnia? Where does the taboo against sex during menstruation originate? Great moments in human research 2: "Concluding, among other things..." The Ig Nobel Prizes are awarded to research that is not exactly compelling. Here are some more "winners" in …
Stephen Juan, 03 Feb 2007
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What is sexsomnia?

Also in this week's column: Great moments in human research 2: "Concluding, among other things..." What ever happened to tuberculosis? Where does the taboo against sex during menstruation originate? What is sexsomnia? Falling asleep after sex is common, but falling, sleeping and staying asleep during sex is another matter. …
Stephen Juan, 03 Feb 2007
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Is it dangerous to wake a sleepwalker?

Also in this week's column: Great moments in human research 1 Does urinating after sex prevent catching HIV or other infections? How much damage does a tapeworm do to the human body? Is it dangerous to wake a sleepwalker? Asked by Gale Power of Manly, NSW, Australia It is a myth that it is dangerous to wake up a sleepwalker …
Stephen Juan, 27 Jan 2007
micrograph reveals the morphology of a Taenia solium tapeworm scolex with its four suckers, and two rows of hooks.

How much damage does a tapeworm do to the human body?

Also in this week's column: Great moments in human research 1 Does urinating after sex prevent catching HIV or other infections? Is it dangerous to wake a sleepwalker? How much damage does a tapeworm do to the human body? Asked by George Gomez of Concord, California, USA Tapeworms produce surprisingly few physical problems …
Stephen Juan, 27 Jan 2007
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Does urinating after sex prevent catching HIV or other infections?

Also in this week's column: Great moments in human research 1 How much damage does a tapeworm do to the human body? Is it dangerous to wake a sleepwalker? Does urinating after sex prevent catching HIV or other infections? Asked by John Norton of Philadelphia, USA It is widely believed that urinating after sex will prevent …
Stephen Juan, 27 Jan 2007
The Register breaking news

Great moments in human research

Also in this week's column: Does urinating after sex prevent catching HIV or other infections? How much damage does a tapeworm do to the human body? Is it dangerous to wake a sleepwalker? Great moments in human research 1: "Concluding, among other things..." The Ig Nobel Prizes are awarded to research that is not exactly …
Stephen Juan, 27 Jan 2007
The Register breaking news

Are women who are forty, fat and fair more likely to get gallstones?

Also in this week's column: When is seeing not seeing? Why is the human face hairless? Is the human skull made up of one bone or two? Are women who are forty, fat and fair more likely to get gallstones? Asked by Sonia Axtens of Sacramento, California The old wives’ tale that women who are forty, fat, and fair are more …
Stephen Juan, 20 Jan 2007
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Why is the human face hairless?

Also in this week's column: Are women who are forty, fat and fair more likely to get gallstones? When is seeing not seeing? Is the human skull made up of one bone or two? Why is the human face hairless? Asked by Tom Sherwood of Worthington, Minnesota Most other mammals have hairy faces. So why are we humans an exception? In …
Stephen Juan, 20 Jan 2007
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Is the human skull made up of one bone or two?

Also in this week's column: Are women who are forty, fat and fair more likely to get gallstones? When is seeing not seeing? Why is the human face hairless? Is the human skull made up of one bone or two? Asked by Jill Maynard of Greenacre, New South Wales, Australia It surprises many to learn that the human skull is not one …
Stephen Juan, 20 Jan 2007
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When is seeing not seeing?

Also in this week's column: Are women who are forty, fat and fair more likely to get gallstones? Why is the human face hairless? Is the human skull made up of one bone or two? When is seeing not seeing? Do you ever wonder how a magician is able to fool you with a trick, as they say, “right before your very eyes”? …
Stephen Juan, 19 Jan 2007
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Why do we open our mouths to yawn properly?

Also in this week's column: Why do some people have three nipples? Is it true that a woman's breasts can grow enormously overnight? Why is it absolutely impossible to sneeze with your eyes open? Why do we open our mouths to yawn properly? Asked by Jeff Grisham of San Antonio, Texas The involuntary act of yawning usually …
Stephen Juan, 13 Jan 2007
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Why is it absolutely impossible to sneeze with your eyes open?

Also in this week's column: Why do some people have three nipples? Is it true that a woman's breasts can grow enormously overnight? Why do we open our mouths to yawn properly? Why is it absolutely impossible to sneeze with your eyes open? Asked by Jeff Grisham of San Antonio, Texas One of the classic Odd Body Questions is …
Stephen Juan, 13 Jan 2007
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Is it true that a woman's breasts can grow enormously overnight?

Also in this week's column: Why do some people have three nipples? Why is it absolutely impossible to sneeze with your eyes open? Why do we open our mouths to yawn properly? Is it true that a woman's breasts can grow enormously overnight? Asked by Kumari Issar of Mumbai, India Gigantomastia is the condition in which a woman …
Stephen Juan, 13 Jan 2007

Why do some people have three nipples?

Also in this week's column: Is it true that a woman's breasts can grow enormously overnight? Why is it absolutely impossible to sneeze with your eyes open? Why do we open our mouths to yawn properly? Why do some people have three nipples? Asked by Kumari Issar of Mumbai, India It is not widely known, but about one in 50 …
Stephen Juan, 13 Jan 2007
The Register breaking news

Will robots ever become just like humans?

Also in this week's column: Is there such a thing as frigidity? How does the heart differ from other mechanical pumps? Will robots ever become just like humans? Asked by Chuck Schroeter of Seattle, Washington, USA We are getting very close to building an almost human-like robot. However, we will never be able to build a …
Stephen Juan, 23 Dec 2006
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How does the heart differ from other mechanical pumps?

Also in this week's column: Will robots ever become just like humans? Is there such a thing as frigidity? How does the heart differ from other mechanical pumps? Asked by Andrew Lane of North York, Ontario, Canada It is difficult to imagine a mechanical pump anywhere near as good in operating so well over so long as a human …
Stephen Juan, 23 Dec 2006
The Register breaking news

Is there such a thing as frigidity?

Also in this week's column: Will robots ever become just like humans? How does the heart differ from other mechanical pumps? Is there such a thing as frigidity? "Frigidity" is the term formerly used for Inhibited Sexual Desire (ISD). ISD is a low level of sexual desire in one or both partners in a relationship. A person may …
Stephen Juan, 23 Dec 2006