November 3, 2010 Health

BPA Receipts

Here’s another way that most ubiquitous of not-so-friendly chemicals, BPA, can end up in your body: via store receipts. Turns out that the thermal papers used to print most receipts are heavily infused with the chemical (up to 2% by weight, apparently). Tests have revealed that the BPA easily rubs off on your fingers as (more...)...

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November 9, 2009 Health

BPA in the NY Times

NY Times columnist Nicholas Kristoff writes about the ubiquity of BPA in our bodies, plus a gaggle of new studies linking BPA exposure to a variety of abnormalities in test animals. If you’ve been following the BPA Saga (including this impressive bit of corporate nastiness by Sigg), you’ll see that the latest research keeps upping (more...)...

Posted in Health, Science | 6 Comments
August 5, 2009 Health

New Yorker on SPF Ratings

The New Yorker has a fascinating piece on SPF ratings in suntan lotion. Looks like I may have to rethink my standard SPF 50… (more...)...

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July 30, 2009 Health

Hypoxic Interval Training?

I was reading an article in this month’s Backpacker magazine about thirteen-year-old Jordan Romero, who is on a quest to be the youngest person ever to climb the so-called Seven Summits. While there’s certainly no lack of controversy about Jordan’s story (he summited Aconcagua at 11, and has plans to top Everest next year), what (more...)...

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September 26, 2008 Health

Sunscreen in a Pill?

For fair-skinned persons like myself, it’s sort of the Holy Grail of sun protection: the concept of a sunscreen that you ingest as a pill rather than slather all over your body. Interestingly enough, one of my parents’ health newsletters is mentioning a product called Heliocare which promises to do exactly that. It’s a pill. (more...)...

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September 16, 2008 Health

BPA Study links exposure, health effects

To the best of my knowledge, this is the first time a study has linked BPA exposure to health issues in humans. Here you Go… (more...)...

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May 8, 2008 Health

Female Athletes and ACL Tears

The New York Times is running an article on the epidemic of ACL tears and other injuries in U.S. female athletes. Female participation in sports in this country is exploding, credited in part to a 1972 law, TITLE X, which mandated equal opportunity in sports to female athletes (more...)...

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March 25, 2008 Health

Backcountry.com on Plastic Toxicity

This month’s Backcountry.com newsletter features an article on plastic water bottle concerns and alternatives. Some of you may be aware that Canada’s largest outdoor retailer recently pulled polycarbonate (Lexan) water bottles from its shelves, citing safety concerns about the ingredient BPA, which leeches from polycarbonate plastics, and which acts like a hormone when ingested by (more...)...

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August 7, 2007 Health

How Toxic is Your Sunscreen?

If you’re like me—fair-skinned, that is—you’ve probably discovered that sunscreens don’t all perform the same. I can put on a thick layer of SPF 50 and still get torched. No, it’s not just that sunscreens tend to wash off as you sweat: some just don’t work that well. Many formulations only give SPF ratings for (more...)...

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February 9, 2007 Health

Backcountry Skiing & Risk

After a long road trip to the San Juans, we’re back in dry SoCal, looking at bare mountains and searching the web for diversions. Here’s an interesting American Alpine Club Article on Risk. The author argues that climbing and mountaineering accidents have dropped dramatically despite a huge increase in participants. Mountaineering, of course, is generally (more...)...

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About SierraDescents

When there is snow, SierraDescents is Andy Lewicky's California backcountry skiing and mountaineering website. Without snow, sierradescents becomes an ill-tempered hiking and climbing blog.

Pray for snow.