“YOUR GREENS” What They Are And Why They Are So Good
Today I’m posting a chapter from my book-in-progress: How To Drop Dead Dancing In Your 90s….here is Part I of GREENS!
Kale. Collards. Mustard Greens. Beet Greens. Dandelion Greens. Swiss Chard. Spinach. All “greens”, and, except for spinach, they are foreign to most American diets. Despite having a taste that many might also regard as foreign—too strong, even bitter—to increase your odds of dancing into your 90s you should move beyond salad and the more conventional vegetables and start adding these more exotic “greens” into your routine.
Taste bud research suggests some people are genetically programmed to despise the taste of greens, and if that includes you, try making an extra effort, because these are the vegetable superstars. Some nutritionists feel they have more value per calorie than any other food.
Perhaps greens have such a distinctive taste because they are so primitive. Unchanged for thousands of years, originally from Asia and Africa, hearty and easy-to-grow kale was among the first vegetables brought by the colonists to the New World. Later, American slaves popularized collards, and greens became part of “soul food”. Unfortunately they were often considered throwaways—vegetables for poor people—until scientists discovered that they were actually so nutritionally rich, and now greens are enjoying a renaissance.
They are full of fiber and low in calories, bursting with vitamins A and C, iron, calcium and various other minerals, and those mysterious “phytochemicals” such as lutein and the more impressively named zeaxanthin; these are the most exciting components in greens, the substances that protect our cells from cancer, age-related vision problems, and maybe dementia. An extra benefit: many American diets are deficient in vitamin K, and greens are the absolute best natural source for this vitamin.
Like most vegetables, adding greens to your diet will help keep your cardiovascular system healthy, and lower your risk of stroke. But greens are much more potent—studies suggest that a green-rich diet is associated with a significantly lower risk of lung, breast, ovary, colon, and bladder cancer. Most research indicates about a 20 to 50 percent lower risk of these cancers in people who eat lots of greens. The mechanism seems to be that the phytochemicals trigger a genetic signal that stimulates the activity of detoxifying enzymes in our liver, so carcinogens are neutralized before doing damage.
Scientists (and drug companies) are working furiously to treat osteoporosis, and along with the importance of calcium and vitamin D, vitamin K is a new star for keeping our bones strong. The Framingham Heart Study showed that those with the highest vitamin K intake had a 65% decreased risk of hip fractures! If true, eating a good amount of greens certainly is a much cheaper and safer and perhaps a more effective way, compared with medications, to lower your risk of disabling bone fractures. And, as we will discuss further in the PROTECT chapter, greens intake probably dramatically cut the risk of cataracts and macular degeneration (the most common form of age-related vision loss).
Next: Greens, Part II
khars Said,
July 23, 2009 @ 4:24 pm
do not neglect the lowly but widely available and cheap and delicious…cabbage
same family as kale collards mustard broccoli (brassica)
and more versitile than they will ever be