Minum tea dan kopi hitam kurangkan risiko serangan sakit jantung

Kajian terkini menunjukkan bahawa minum teh hitam atau kopi sebanyak 3 hingga 6 cawan sehari boleh memperbaiki peredaran darah dan mengurangkan risiko mendapat serangan sakit jantung berbanding dengan orang yang kurang minum teh hitam atau kopi. Perlu diingat minum teh dan kopi yang kurang gula, bukannya yang manis atau dibancuh dengan susu tiruan (seperti teh tarik, dsb.). Kesan yang yang positif ini adalah kerana teh hitam dan kopi mengandungi flavonoid (sejenis anti-oksidan).

Perincian tentang laporan ini dipanjangkan dalam artikel berikut…

Tea, Coffee Drinkers Have Lower Heart Risk

Study Shows 3 to 6 Cups of Tea Daily Linked Reduced Risk of Death From Heart Disease

By Salynn Boyles
Reviewed by Laura J. Martin, MD

June 18, 2010 — People who drink a lot of tea or drink coffee in moderation are less likely to die of heart disease than coffee and tea abstainers, new research suggests.

The finding adds to the growing body of evidence suggesting that coffee and tea help protect against heart disease, but not stroke.

Researchers followed more than 37,000 people in The Netherlands for 13 years in one of the largest and longest studies ever to examine the impact of coffee and tea drinking on heart health.

They found that:

* People who drank three to six cups of tea per day had a 45% lower risk of death from heart disease than people who drank less than one cup of tea a day.

* Drinking more than six cups of tea a day was associated with a 36% lower risk of heart disease, compared to drinking less than one cup.

* People who drank more than two, but no more than four, cups of coffee a day had about a 20% lower risk of heart disease than people who drank more or less coffee or no coffee at all.

* Moderate coffee consumption was associated with a slight, but not statistically significant, reduction in death from heart disease, but neither coffee nor tea affected stroke risk.

The association was seen even though the researchers considered other lifestyle factors associated with heart disease, including smoking and exercise level.

Benefits of Black Tea

The study did not include people with known heart disease, so it is not clear if drinking coffee or tea is beneficial for them, study researcher Yvonne T. van der Schouw, PhD, tells the author.

“But for healthy people, it appears that drinking coffee and tea is not harmful and it may even offer some benefits,” she says.

Several earlier studies have also found that drinking coffee or tea lowers the risk for heart disease.

In one, reported in 2008, women who drank four to five cups of coffee a day had a 34% lower risk of dying from heart disease while men who drank more than five cups had a 44% lower risk.

In another study published the same year, drinking green tea was associated with improved blood vessel function and lower heart disease risk.

But most of the people in The Netherlands study drank black tea, which is also consumed more than green tea in America.

The study appears in the latest issue of the American Heart Association journal Arteriosclerosis, Thrombosis and Vascular Biology.

“The perception has been that green tea is the ‘healthy’ tea, but this study suggests black tea may be just a good for the heart,” University of Vermont professor of nutrition Rachel K. Johnson, PhD, tells the author. “That will be good news to people like me who are not big green-tea lovers.”

Flavonoids in Tea, Coffee May Protect Heart

While six cups of tea may sound like a lot, Johnson points out that a large glass of iced tea may contain two to three cups of liquid.

“Iced tea is very popular in some parts of the country, especially in the summer,” says Johnson, who is also a spokeswoman for the American Heart Association. “Just make sure to go easy on the sugar. I would hate for people to get the message that they should be drinking more sugar-sweetened beverages.”

The researchers suggest that powerful antioxidants called flavonoids found in black and green tea and coffee may explain the protective effect seen in the study.

Other foods that contain flavonoids include red wine, red grapes, dark chocolate, blueberries, and red beans.


Mencari Allah

“Selama tiga puluh tahun saya mencari Tuhan, tetapi apabila saya fikir dan pandang dengan teliti, saya dapati pada hakikatnya Allah yang mencari dan saya yang dicari.” ~ Abu Yazid Al-Bistami.

Kaedah meningkatkan metabolisme

Kadar metabolisme badan kita berbeza-beza di antara satu sama lain, bergantung kepada berbagai faktor yang mempengaruhinya. Metabolisme badan yang perlahan menyebabkan kalori yang berlebihan hasil daripada makanan yang dimakan mudah berkumpul menjadi lemak yang tidak diingini.

Di antara faktor yang mempengaruhi kadar metabolisme badan ialah genetik (baka), umur dan jantina. Beruntunglah orang yang mempunyai baka yang kadar metabolisme badannya tinggi, makan banyak pun tidak memberi kesan kepada pertambahan berat badan, badan sentiasa slim/kurus kerana kalori berlebihan daripada makanan cepat ditukar menjadi tenaga dan tidak menjadi lemak terkumpul.

Bagi kebanyakan orang, kadar metabolisme akan menjadi perlahan selepas umur 40 tahun, oleh itu banyak yang bertambah gemuk apabila semakin tua. Biasanya orang lelaki pula lebih mudah menggunakan kalori yang berlebihan berbanding wanita, oleh itu wanita mudah menjadi gemuk, terutamanya apabila kurang melakukan senaman.

Artikel di bawah ini memfokuskan kepada 10 cara untuk meningkatkan metabolisme badan yang boleh dilakukan untuk menangani faktor semulajadi di atas…..

10 Ways to Boost Your Metabolism

Reviewed by Brunilda Nazario, MD

The Elusive Metabolism Boost

Boosting the metabolism is the holy grail of weight watchers everywhere, but how fast your body burns calories depends on several factors. Some people inherit a speedy metabolism. Men tend to burn more calories than women, even while resting. And for most people, metabolism slows steadily after age 40. Although you can’t control your age, gender, or genetics, there are other ways to get a boost. Read on for 10 ways to rev up.

Build Muscle

Our bodies constantly burn calories, even when we’re doing nothing. This resting metabolic rate is much higher in people with more muscle. Every pound of muscle uses about 6 calories a day just to sustain itself, while each pound of fat burns only 2 calories daily. That small difference can add up over time. In addition, after a bout of resistance training, muscles are activated all over your body, increasing your average daily metabolic rate.

Kick Your Workout Up a Notch

Aerobic exercise may not build big muscles, but it can rev up your metabolism in the hours after a workout. The key is to push yourself. High-intensity exercise delivers a bigger, longer increase in resting metabolic rate than low- or moderate workouts. To get the benefits, try a more intense class at the gym or include short bursts of jogging during your regular walk.

Drink More Water

The body needs water to process calories. If you are even mildly dehydrated, your metabolism may slow down. In one study, adults who drank eight or more glasses of water a day burned more calories than those who drank four. To stay hydrated, drink a glass of water or other unsweetened beverage before every meal and snack. In addition, try munching on fresh fruits and vegetables, which are full of fluid, rather than pretzels or chips.

Have Your Drinks on the Rocks

Ice-cold beverages prompt the body to burn more calories during digestion. Research suggests five or six glasses of water on the rocks can use up an extra 10 calories a day. That might not sound like much, but it adds up to a pound of weight loss per year — without dieting. You can get the same benefit by drinking iced tea or coffee, as long as you forego the cream and sugar.

Eat More Often

Eating more really can help you lose weight — eating more often, that is. When you eat large meals with many hours in between, you train your metabolism to slow down. Having a small meal or snack every 3 to 4 hours keeps your metabolism cranking, so you burn more calories over the course of a day. Several studies have also shown that people who snack regularly eat less at meal time.

Spice Up Your Meals

Spicy foods contain chemical compounds that kick the metabolism into high gear. Eating a tablespoon of chopped red or green chili pepper can temporarily boost your metabolic rate by 23 percent. Some studies suggest the effect only lasts about half an hour, but if you eat spicy foods often, the benefits may add up. For a quick boost, spice up pasta dishes, chili, and stews with red-pepper flakes.

Eat More Protein

The body burns up to twice as many calories digesting protein as it uses for fat or carbohydrates. Although you want to eat a balanced diet, replacing some carbs with lean, protein-rich foods can jump-start the metabolism at mealtime. Healthy sources of protein include lean beef and pork, fish, white meat chicken, tofu, nuts, beans, eggs, and low-fat dairy products.

Drink Black Coffee

If you’re a coffee drinker, you probably enjoy the increased energy and concentration that follows your morning ritual. Well, some of these benefits are linked to a short-term increase in your metabolic rate. In one study, the caffeine in two cups of coffee prompted a 145-pound woman to burn 50 extra calories over the next four hours. Just be sure to drink it black. If you add cream, sugar, or flavored syrups, you’ll take in far more calories than you burn.

Drink Green Tea

Drinking green tea or oolong tea offers the combined benefits of caffeine and catechins, substances shown to rev up the metabolism for a couple hours. Research suggests drinking two to four cups of either tea may push the body to burn an extra 50 calories each day. That adds up to 5 pounds of weight loss in a year.

Avoid Crash Diets

Crash diets — those involving eating fewer than 1,000 calories a day — are disastrous for anyone hoping to quicken their metabolism. Although these diets may help you drop pounds (at the expense of good nutrition), a high percentage of the loss comes from muscle. The lower your muscle mass, the slower your metabolism. The final result is a body that burns far fewer calories (and gains weight faster) than the one you had before the diet.

Best Bets

The impact of different foods and drinks on the metabolism is small compared to what you need for sustained weight loss. Your best bet for creating a mean calorie-burning machine is to build muscle and stay active. The more you move during the day, the more calories you burn. And remember: working out in the morning has the benefit of revving up your metabolism for hours.


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