For many, no drink is more synonymous with good health than green
tea, the ancient Chinese beverage known for its soothing aroma and
abundance of antioxidants. By some estimates, Americans drink nearly 10
billion servings of green tea each year.
But a new report by an independent laboratory shows that green tea
can vary widely from one cup to the next. Some bottled varieties appear
to be little more than sugar water, containing little of the
antioxidants that have given the beverage its good name. And some green
tea leaves, particularly those from China, are contaminated with lead,
though the metal does not appear to leach out during the brewing
process.
The report was published this week
by ConsumerLab.com, an independent site that tests health products of
all kinds. The company, which had previously tested a variety of green
tea supplements typically found in health food stores, took a close look
at brewed and bottled green tea products, a segment that has grown
rapidly since the 1990s.
It found that green tea brewed from loose tea leaves was perhaps the
best and most potent source of antioxidants like epigallocatechin
gallate, or EGCG, though plain and simple tea bags made by Lipton and
Bigelow were the most cost-efficient source. Green tea’s popularity has
been fueled in part by a barrage of research linking EGCG to benefits
like weight loss to cancer prevention, but the evidence comes largely
from test tube studies, research on animals and large population
studies, none of it very rigorous, and researchers could not rule out
the contribution of other healthy behaviors that tend to cluster
together.
Green tea is one of the most popular varieties of tea in the United States, second only to black tea,
which is made from the leaves of the same plant. EGCG belongs to a
group of antioxidant compounds called catechins that are also found in
fruits, vegetables, wine and cocoa.
The new research was carried out in several phases. In one,
researchers tested four brands of green tea beverages sold in stores.
One variety, Diet Snapple Green Tea, contained almost no EGCG. Another bottled brand, Honest Tea’s Green Tea With Honey,
claimed to carry 190 milligrams of catechins, but the report found that
it contained only about 60 percent of that figure. The drink also
contained 70 milligrams of caffeine, about two-thirds the amount in a
regular cup of coffee, as well as 18 grams of sugar, about half the
amount found in a can of Sprite.
Another phase of the study looked at green tea in its more natural
forms – loose tea leaves sold by Teavana and tea bags sold by companies
like Bigelow and Lipton. A single serving of Teavana’s Gyokuro
green tea, about one teaspoonful, was chock-full of antioxidants,
yielding about 250 milligrams of catechins, a third of which were EGCG.
It also contained 86 milligrams of caffeine, slightly less than a
regular cup of coffee.
A single bag of the green tea sold by Lipton and Bigelow contained
somewhat smaller amounts of antioxidants than Teavana’s green tea and
generally minimal amounts of caffeine. But Teavana’s recommended serving
size was large, and the tea was also far more expensive, resulting in a
higher cost per serving. The report calculated that the cost to obtain
200 milligrams of EGCG ranged from 27 cents to 60 cents with the tea
bags, and $2.18 with the Teavana loose tea leaves.
But the most surprising phase of the study was an analysis of the
lead content in the green tea leaves.
The leaves in the Lipton and
Bigelow tea bags contained 1.25 to 2.5 micrograms of lead per serving.
The leaves from Teavana, however, did not contain measurable amounts.
“Lead can occur in many botanical products because it is taken up
from the ground,” said Dr. Tod Cooperman, president of ConsumerLab.com.
“The green tea plant is known to absorb lead at a higher rate than other
plants from the environment, and lead also can build up on the surface
of the leaves.”
Dr. Cooperman said the tea leaves containing lead probably originated in China, where studies have found
that industrial pollution causes the leaves in some regions to gather
substantial amounts of lead. The Teavana leaves came from Japan, where
that is less of a problem, he said. The decaffeination process also
helps remove lead.
Still, the study found that there was no real prospect of a health
concern from the lead. The liquid portions of the teas that were brewed
and tested contained very little if any of the metal, Dr. Cooperman
said.
“The majority of the lead is staying with the leaf,” he said. “If
you’re brewing it with a tea bag, the tea bag is very effectively
filtering out most of the lead by keeping those tea leaves inside the
bag. So it’s fine as long as you’re not eating the leaves.”
By ANAHAD O'CONNOR
http://well.blogs.nytimes.com/2013/05/23/whats-in-your-green-tea/?ref=health
Thursday, May 23, 2013
Friday, March 22, 2013
To Buy Organic or Not to Buy Organic: Fruits and Vegeables Guide
"People don’t like pesticides on the food they eat or in the water they drink. The most recent government pesticide tests establish the widespread presence of pesticide residues on conventionally grown fruits and vegetables and in tap water. "http://www.ewg.org/foodnews/methodology/
Here is some great information I found on the EWG's website.
This year's Dirty Dozen™
- The most contaminated fruits, in alphabetical order, are apples, domestic blueberries, grapes, imported nectarines, peaches and strawberries.
- The most contaminated vegetables are bell peppers, celery, cucumbers, lettuce, potatoes and spinach.
- Every sample of imported nectarines tested positive for pesticides, followed by apples (98 percent) and imported plums (96 percent).
- The average imported nectarine had much higher total weight of pesticides than any other food crop.
- Grapes had 15 pesticides detected on a single sample. Blueberries and strawberries both had 13 different pesticides detected on a single sample
- As a category, grapes have more types of pesticides than any other produce, with 64 different pesticides.
- Some 96 percent of celery samples tested positive for pesticides, followed by potatoes (91 percent).
- A single bell pepper sample was contaminated with 15 different pesticides, followed by a single sample of celery with 13.
- Bell peppers had 88 different pesticide residues, followed by cucumbers (81) and lettuce (78).
The Clean Fifteen™
The Clean Fifteen™ – the produce least likely to test positive for pesticide residues were these fruits -- domestic cantaloupe, grapefruit, kiwi, mango, pineapple and watermelon -- and these vegetables -- asparagus, avocado, cabbage, eggplants, mushrooms, onions, frozen peas, sweet corn and sweet potatoes.Notable findings:
- Fewer than 10 percent of pineapple samples had detectable pesticides.
- Some 78 percent of mango, 75 percent of kiwi, 67 percent of watermelon and 60 percent of domestic cantaloupe had no residues,
- No single fruit sample from the Clean Fifteen™ had more than 5 types of pesticides detected.
- Avocado, sweet corn and onions had no detectable pesticide residues on 98 percent or more of the samples tested.
- Multiple pesticide residues are extremely rare on Clean Fifteen™ vegetables. No samples of sweet corn and onions had more than one pesticide. More than 90 percent of cabbage, asparagus, sweet peas, eggplant and sweet potato samples had no more than one pesticide detected..
- Of the Clean Fifteen™ vegetables, no single sample had more than 5 different chemicals
http://www.ewg.org/foodnews/methodology/
Tuesday, March 19, 2013
How to Get Omega’s 3, 6, & 9 Without Eating Fish
What do they do, and how do I get them if I don’t like fish?
These are questions I get nearly everyday.
There is always the option to supplement. But, some people don’t like the dreaded “fish burp.” I have found a couple of ways around it; first keep them in the freezer and take them right before you eat. Second, they sell Enteric Coated omegas and most vitamin stores that will not break down until they are way past your stomach so there is no risk of having a “when did I eat fish?” moment.
Even though supplementing is an option, whole foods are always a healthier choice. And for those of us who can only handle so much fish in a week, here are some other options that I found on the livestrong website.
Omega 3: A few functions that our bodies utilize omega-3 fatty acids for include: forming cell membranes, eye health, nerve cell development, maintaining healthy cholesterol levels, prevention of menstrual syndrome and postmenopausal hot flushes.
3 Sources:
1. Flaxseed
2. "omega-3" eggs
3. Edamame (Soybeans)
Omega 6: Omega-6 fatty acids are much more prevalent in the Western diet. They are also critically important to our body's proper functioning. A short list of omega-6 fatty acids role in the body includes: brain function, healthy skin, muscle growth and repair.
3 sources:
1. Walnuts
2. Cashews
3. Avocado
Our body is capable of manufacturing omega-9 fatty acids. Therefore, it is not as critical that we get them directly from the diet as it is for omega-3 and omega-6 fatty acids. Omega-9 fatty acids are derived from monounsaturated fats, whereas the omega-3 and 6 are derived from polyunsaturated fats. Health benefits of omega-9 fatty acids include: improving cholesterol levels, proper heart health and improving immune system functioning.
3 sources:
1. Olive Oil
2. Almonds
3. Pistachios
http://www.livestrong.com/article/27297-foods-high-omega-/
These are questions I get nearly everyday.
There is always the option to supplement. But, some people don’t like the dreaded “fish burp.” I have found a couple of ways around it; first keep them in the freezer and take them right before you eat. Second, they sell Enteric Coated omegas and most vitamin stores that will not break down until they are way past your stomach so there is no risk of having a “when did I eat fish?” moment.
Even though supplementing is an option, whole foods are always a healthier choice. And for those of us who can only handle so much fish in a week, here are some other options that I found on the livestrong website.
Omega 3: A few functions that our bodies utilize omega-3 fatty acids for include: forming cell membranes, eye health, nerve cell development, maintaining healthy cholesterol levels, prevention of menstrual syndrome and postmenopausal hot flushes.
3 Sources:
1. Flaxseed
2. "omega-3" eggs
3. Edamame (Soybeans)
Omega 6: Omega-6 fatty acids are much more prevalent in the Western diet. They are also critically important to our body's proper functioning. A short list of omega-6 fatty acids role in the body includes: brain function, healthy skin, muscle growth and repair.
3 sources:
1. Walnuts
2. Cashews
3. Avocado
Our body is capable of manufacturing omega-9 fatty acids. Therefore, it is not as critical that we get them directly from the diet as it is for omega-3 and omega-6 fatty acids. Omega-9 fatty acids are derived from monounsaturated fats, whereas the omega-3 and 6 are derived from polyunsaturated fats. Health benefits of omega-9 fatty acids include: improving cholesterol levels, proper heart health and improving immune system functioning.
3 sources:
1. Olive Oil
2. Almonds
3. Pistachios
http://www.livestrong.com/article/27297-foods-high-omega-/
Monday, February 4, 2013
Stretching: Focus on flexibility
Here is a great article I found on the mayo clinics website about proper stretching.
Stretching may take a back seat to
your exercise routine. You may think that stretching your hamstrings and calves
is just something to be done if you have a few extra minutes before or after
pounding out some miles on the treadmill. The main concern is exercising, not
stretching, right?
Not so fast. Although studies about
the benefits of stretching are mixed, stretching may help you improve your
flexibility, which in turn may improve your athletic performance and decrease
your risk of injury. Understand why stretching can help — and how to stretch
correctly.
Benefits
of stretching
Studies about the benefits of
stretching have had mixed results. Some show that stretching helps, while
others show that stretching has little if any benefit. The main benefits of
stretching are thought to be:
- Improving athletic performance
- Decreasing the risk of activity-based injuries
Stretching can help improve
flexibility. And better flexibility may improve your performance in physical
activities or decrease your risk of injuries by helping your joints move
through their full range of motion. For instance, say your Achilles tendon is
tight and lacks flexibility. If you do a lot of hill walking, your foot may not
move through its full range of motion. Over time, this can increase your risk
of tendinitis or tendinopathy in your Achilles tendon. Stretching your Achilles
tendon, though, may improve the range of motion in your ankle. This, in turn,
can decrease the risk of microtrauma to your tendon that can lead to overload
and injury.
Stretching also increases blood flow
to the muscle. And you may come to enjoy the ritual of stretching before — or
better yet, after — hitting the trail, ballet floor or soccer field.
Stretching
essentials
Before you plunge into stretching,
make sure you do it safely and effectively. While you can stretch anytime,
anywhere — in your home, at work, in a hotel room or at the park — you want to
be sure to use proper technique. Stretching incorrectly can actually do more
harm than good.
Use these tips to keep stretching
safe:
- Don't consider stretching a warm-up. You may hurt yourself if you stretch cold muscles. So before stretching, warm up with light walking, jogging or biking at low intensity for five to 10 minutes. Or better yet, stretch after you exercise when your muscles are warmed up. Also, consider holding off on stretching before an intense activity, such as sprinting or track and field activities. Some research suggests that pre-event stretching before these types of events may actually decrease performance.
- Focus on major muscle groups. When you're stretching, focus on your calves, thighs, hips, lower back, neck and shoulders. Also stretch muscles and joints that you routinely use at work or play. And make sure that you stretch both sides. For instance, if you stretch your left hamstring, be sure to stretch your right hamstring, too.
- Don't bounce. Bouncing as you stretch can cause small tears in the muscle. These tears leave scar tissue as the muscle heals, which tightens the muscle even further, making you less flexible and more prone to pain. So, hold each stretch for about 30 seconds. Repeat each stretch three or four times.
- Don't aim for pain. Expect to feel tension while you're stretching, not pain. If it hurts, you've pushed too far. Back off to the point where you don't feel any pain, then hold the stretch.
- Make stretches sport specific. Some evidence suggests that it's helpful to do stretches tailored for your sport or activity. If you play soccer, for instance, you're more vulnerable to hamstring strains. So opt for stretches that help your hamstrings.
- Keep up with your stretching. Stretching can be time-consuming. But you can achieve the best benefits by stretching regularly, at least two to three times a week. If you don't stretch regularly, you risk losing any benefits that stretching offered. For instance, if stretching helped you increase your range of motion, and you stop stretching, your range of motion may decrease again.
- Bring movement into your stretching. Gentle movement can help you be more flexible in specific movements. The gentle movements of tai chi, for instance, may be a good way to stretch. And if you're going to perform a specific activity, such as a front kick in martial arts, do the move slowly and at low intensity at first to get your muscles used to it. Then speed up gradually as your muscles become accustomed to the motion.
Know
when to exercise caution
In some cases, you may need to
approach stretching with caution. If you have a chronic condition or an injury,
you may need to adjust your stretching techniques. For example, if you already
have a strained muscle, stretching it may cause further harm.
Also, don't think that because you
stretch you can't get injured. Stretching, for instance, won't prevent an
overuse injury. Talk to your doctor or physical therapist about the best way to
stretch if you have any health concerns.
Thursday, January 31, 2013
The Institute of Medicine says adult men need about 13 cups (3 liters) per day of fluid; adult women need about 9 cups (2.2 liters) of fluid. (You get about an additional 21/2 cups of fluid from foods.)
“But one size doesn’t fit all,” says Leslie Bonci, R.D., C.S.S.D., director of sports nutrition at the Center for Sports Medicine at the University of Pittsburgh Medical Center and dietitian for the Pittsburgh Steelers. Your size and activity level affect your fluid requirements. Simply put, the larger and more active you are, the more you’ll need.
“The easiest thing that anybody could do on a daily basis is monitor their urine color,” says Douglas Casa, Ph.D., A.T.C., who studies hydration at the University of Connecticut. “Lighter urine color—like lemonade—means you’re generally well-hydrated. If it’s darker, like apple juice, you are most likely dehydrated.”
Older adults’ fluid needs don’t change, but they’re more likely to become dehydrated because their sense of thirst declines. Pregnant women and nursing mothers need slightly more water. Some medications, such as antihistamines and certain antidepressants, increase your fluid needs too.
http://www.eatingwell.com/nutrition_health/nutrition_news_information/how_much_water_to_drink?page=2
Tuesday, January 22, 2013
Dont Give Up
Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.
- Thomas A. Edison
Subscribe to:
Posts (Atom)