by Max Hauser » Mon Aug 13, 2007 3:29 pm
To follow up, here's more info. I did quick Internet searching. Most hits are on multiple, recently discovered protective properties of turmeric (including a US patent granted on a new use for it in wound healing). FWIW, one scientific paper cited in Wikipedia mentions chemical bases for simultaneous carcinogenic and anti-carcinogenic effects (no doubt with different cell types, a situation not unique in food), but further work failed to show the practical carcinogenesis in one animal study. Also, there was a bulletin on some turmeric powders shipped adulterated by a dangerous dye. It's also true, as Stuart Y pointed out, that online reports of biomedical science tend to be very gee-whiz and shallow.
(Unforgivably, while corresponding about the complex relationship between acetaminophen [Tylenol (tm)] and alcohol, a medical-faculty friend quipped repeatedly that online advice about liver health must be viewed with a jaundiced eye.)
Info I read earlier on then-fairly-recent information cautioning of health hazard in turmeric -- an argument to use it moderately -- was in writing about cooking, published circa 1990, and I likely still have it (somewhere). Interestingly, the combination of onions and turmeric seems from recent reports to be especially healthy. A favorite Indian meat dish described in Julie Sahni's original cookbook consists of partly browned onions and turmeric to which thin raw tender lamb (or other meat) is added, then left covered off the heat. The heat from the onions cooks the meat, and the turmeric imparts a rich woody flavor.
More broadly, remarkably many ancient condiment foods -- which aren't staple foods, but flavorings and whatever that people have long used by choice -- now reveal health benefits to scientists. Cinnamon, ginger, the onion family, the mustard family, green tea, the list is long. I was amazed when coffee and even dark chocolate recently joined this list (coffee even having a specific hepatocellular protective against alcohol damage as well as, one physician remarked, "the main source of antioxidants in many people's diets" -- he was defending the stuff, of course he's a regular coffee drinker too.)
There might be a deeper principle here. It's as if human taste for these condiments had more behind it than the simple gustatory pleasure.