ADVERTISEMENT
  About the SA Blog Network

Posts Tagged "metabolism"

Food Matters

Antioxidant Supplements: Too Much of a Kinda Good Thing

Emergen-C

There appears to be a continued public misconception (encouraged by the supplement industry) that free radicals are bad, and that antioxidants are good. Of course, like most phenomena affecting our health, it’s not that simple. Free radicals are molecules or atoms containing an unpaired electron. Unpaired electrons are attention seekers. They really don’t like being [...]

Keep reading »
Food Matters

What To Eat When You’re High (up): Why Not Caviar? And Plenty Of H2O

Winter Park, Colorado, Image buy Author

If you are from the Midwest, or a place of comparable altitude, and have ever taken a trip to the mountains, then you are probably familiar with the humbling experience that is trying to breathe air that just doesn’t seem to be there. A simple task, such as walking up a hill can elicit dizziness, [...]

Keep reading »
Food Matters

Friday Happy Hour: An Introduction (American Lager)

The budding yeast Saccharomyces cerevisiae (click for source)

According to the Centers for Disease Control and Prevention (CDC) , over 50% of adults over the age of 18 had at least one alcoholic drink per month in 2010. Of course, many of those folks (myself included) drank much more than that, totaling $152 billion dollars in the US alone according to US Department [...]

Keep reading »
Guest Blog

How Overeating May Contribute to a Metabolic “Traffic Jam”

Oooh, donut! (Mark H. Anbinder/Flickr)

In what has been dubbed “The Great Crawl of China”, in August 2010 commuters in Beijing accumulated along a 74.5-mile-long stretch of road for a preposterous 11 days straight. No mere rush-hour delay, the absurdity of this pile-up—one of the worst in recorded history—suggests that multiple factors were to blame. Just as fewer cars and [...]

Keep reading »
Life, Unbounded

Mars, Ancient Water, Deep Hydrogen, and Life

mars-earth.001

Two billion year-old water pockets and a revised deep hydrogen content are good news for Earth’s vast subsurface biosphere, and could offer clues to life on Mars and much further beyond. Excitement over the Curiosity rover’s recently reported detection of a ‘spike’ in localized atmospheric methane – persisting over a couple of months – is [...]

Keep reading »
Observations

How Exercise Might Help Our Cells Help Us

In addition to helping us get fit, exercise seems to play a disproportionate role in fending off chronic diseases, such as diabetes. A new study suggests how activity on the cellular level might be keeping us healthy when we get activity on the macro level. The process in question is autophagy, a series of actions [...]

Keep reading »
Observations

Cell phone emissions change brain metabolism

man on cell phone, brain activity metabolism change

Cell phones have not been convincingly linked to brain cancer, but that doesn’t mean that their associated radiation has no effect on our bodies. A new study shows that these pervasive devices can alter the brain’s glucose metabolism, a marker of neuronal activity. The findings will be published in the February 23 issue of JAMA, [...]

Keep reading »
Observations

Hibernating black bears suggest new paths for tissue preservation [Video]

hibernating black bear slows metabolism without lowering body temperature

Some mammals have an attractive solution for coping with long winters—sleep through them. Black bears (Ursus americanus) for example can hibernate for five to seven months of the year, going without food and water or the light of day. Fat loss and perhaps a little grogginess aside, when they emerge from their dens in the [...]

Keep reading »
Streams of Consciousness

Repent for Your Sins—or Turn Them into Something Good

Courtesy of jhoana.tamayo via Flickr.

The November/December Scientific American Mind is a tribute to the seven deadly sins. Not that gluttony, envy, greed, sloth, wrath, lust and pride are necessarily laudable traits, but we can learn a lot from them. Some of them can even work in our favor if we know how to harness them. Others, we must simply [...]

Keep reading »

More from Scientific American

Scientific American Holiday Sale

Scientific American Mind Digital

Get 6 bi-monthly digital issues
+ 1yr of archive access for just $9.99

Hurry this offer ends soon! >

X

Email this Article

X