Wu-long Tea Research

Looking for wu-long tea research to sort the fact from fiction? That's smart! There are companies out there making claims of substantial weight loss and touting many other health benefits of wulong, so it's a good idea to do a little of your own research to help you make a well-informed decision.

Remember, wu-long's real name is oolong, so the studies below reference the scientific name and not the marketing name.

If you're not into reading technical journal articles, our wu-long tea page distills the findings of the first two studies listed below.

Diabetes Care

* Journal Home
* Abstract
* Full Text
* PDF


CLINICAL CARE/EDUCATION/NUTRITION:
Kazuaki Hosoda, Ming-Fu Wang, Mei-Ling Liao, Chin-Kuang Chuang, Miyuki Iha, Beverly Clevidence, and Shigeru Yamamoto
Antihyperglycemic Effect of Oolong Tea in Type 2 Diabetes
Diabetes Care, Jun 2003; 26: 1714 - 1718.
*......Nutrition Antihyperglycemic Effect of Oolong Tea in Type 2 Diabetes Address correspondence...OBJECTIVE-To determine the efficacy of oolong tea for lowering plasma glucose in...the present study. Subjects consumed oolong tea (1,500 ml) or water for 30 days......

Journal of Nutrition

* Journal Home
* Abstract
* Full Text
* PDF


HUMAN NUTRITION AND METABOLISM:
William Rumpler, James Seale, Beverly Clevidence, Joseph Judd, Eugene Wiley, Shigeru Yamamoto, Tatsushi Komatsu, Tetsuya Sawaki, Yoshiyuki Ishikura, and Kazuaki Hosoda
Oolong Tea Increases Metabolic Rate and Fat Oxidation in Men
J. Nutr., Nov 2001; 131: 2848 - 2852.
*......Human Nutrition and Metabolism Oolong Tea Increases Metabolic Rate and Fat...According to traditional Chinese belief, oolong tea is effective in the control of...is gaining scientific merit (1 ). Oolong tea is one of the three types of tea......

Annals of Internal Medicine

* Journal Home
* Abstract
* Summary
* Full Text
* PDF


Hiroyasu Iso, Chigusa Date, Kenji Wakai, Mitsuru Fukui, Akiko Tamakoshi and the JACC Study Group*
The Relationship between Green Tea and Total Caffeine Intake and Risk for Self-Reported Type 2 Diabetes among Japanese Adults
Ann Intern Med, Apr 2006; 144: 554 - 562.
 *......risk for diabetes. Drinking black or oolong teas was not associated with the risk...however, the effect of green, black, and oolong teas is unclear. Objective To examine...consumption of coffee; black, green, and oolong teas; and physician-diagnosed diabetes......
 

JACN
* Journal Home
* FREE Abstract
* Full Text
* PDF


REVIEWS:
Carmen Cabrera, Reyes Artacho, and Rafael Giménez
Beneficial Effects of Green Tea—A Review
J. Am. Coll. Nutr., Apr 2006; 25: 79 - 99.
*......contains more catechins than black or oolong teas. The strong antioxidant potential...more catechins, than black tea or oolong tea. Catechins are in vitro and in...oxidation occurs); semi-fermented oolong tea (produced when the fresh leaves......

Journal of Nutrition

* Journal Home
* Abstract
* Full Text
* PDF


BIOCHEMICAL AND MOLECULAR ACTION OF NUTRIENTS:
Lai Kwok Leung, Yalun Su, Ruoyun Chen, Zesheng Zhang, Yu Huang, and Zhen-Yu Chen
Theaflavins in Black Tea and Catechins in Green Tea Are Equally Effective Antioxidants
J. Nutr., Sep 2001; 131: 2248 - 2251.
*......during the manufacture of black tea and oolong tea to form orange-red pigments, theaflavins...polyphenol pigments found in both black and oolong teas. TF are formed from polymerization...during the manufacture of black or oolong tea (2) . TF contribute to the characteristic......

AJCN

* Journal Home
* Abstract
* Full Text
* PDF


VITAMINS, MINERALS, AND PHYTOCHEMICALS:
Tomonori Nagao, Yumiko Komine, Satoko Soga, Shinichi Meguro, Tadashi Hase, Yukitaka Tanaka, and Ichiro Tokimitsu
Ingestion of a tea rich in catechins leads to a reduction in body fat and malondialdehyde-modified LDL in men
Am. J. Clinical Nutrition, Jan 2005; 81: 122 - 129.
*......which the subjects ingested 1 bottle oolong tea/d containing 690 mg catechins...extract group; n 17) or 1 bottle oolong tea/d containing 22 mg catechins...preparation of the test beverage, 9 g oolong tea leaves underwent extraction with......

Journal of Nutrition

* Journal Home
* Abstract
* Full Text
* PDF


SUPPLEMENT: PROCEEDINGS OF THE THIRD INTERNATIONAL SCIENTIFIC SYMPOSIUM ON TEA AND HUMAN HEALTH:
Gary R. Beecher
Overview of Dietary Flavonoids: Nomenclature, Occurrence and Intake
J. Nutr., Oct 2003; 133: 3248S - 3254S.
*......and found primarily in black and oolong teas. Flavonoids are widely distributed...subsequent processing into foods, e.g., oolong and black teas, red wines and coffee...derived tannins. Of importance to oolong and black teas are the flavanol-derived......

Annals of Pharmacotherapy
* Journal Home
* FREE Abstract
* Full Text
* PDF


COMPLEMENTARY AND ALTERNATIVE MEDICINE:
Anne Marie Whelan, Tannis M Jurgens, and Susan K Bowles
Natural Health Products in the Prevention and Treatment of Osteoporosis: Systematic Review of Randomized Controlled Trials
Ann. Pharmacother., May 2006; 40: 836 - 849.
 *......vitamin D; and black, green, and oolong tea did not meet study criteria...randomized controlled trials were found for oolong, black, or green tea. Randomized controlled...racemosa) 18. Folic acid 33. Oolong tea 4. Black pepper 19......
 

AIN
* Journal Home
* FREE Abstract
* Full Text
* PDF


ORIGINAL INVESTIGATIONS:
Yi-Ching Yang, Feng-Hwa Lu, Jin-Shang Wu, Chih-Hsing Wu, and Chih-Jen Chang
The Protective Effect of Habitual Tea Consumption on Hypertension
Archives of Internal Medicine, Jul 2004; 164: 1534 - 1540.
*......Habitual moderate strength green or oolong tea consumption, 120 mL/d or more...the kind of tea (green, black, or oolong), milk or sugar addition, and the...tea drinkers, 96.3% were green or oolong tea drinkers and only 4.8% had the......

AJCN

* Journal Home
* Abstract
* Full Text
* PDF


AGING:
Shinichi Kuriyama, Atsushi Hozawa, Kaori Ohmori, Taichi Shimazu, Toshifumi Matsui, Satoru Ebihara, Shuichi Awata, Ryoichi Nagatomi, Hiroyuki Arai, and Ichiro Tsuji
Green tea consumption and cognitive function: a cross-sectional study from the Tsurugaya Project 1
Am. J. Clinical Nutrition, Feb 2006; 83: 355 - 361.
*......P for trend 0.33) for black or oolong tea and 1.00 (reference), 1.16 (95...consumption of green tea, black or oolong tea, and coffee and cognitive function...of 5 beverages (green tea, black or oolong tea, coffee, cola or juice, 100 fresh......

Return to Wu-long Tea from Wu-long Tea Research

Go up to Glycemic Gourmet Home from Wu-long Tea Research

Buy Wulong Tea

Bookmark Page



FREE Resources

Free Download: Printable Shopping List of 101 Low Glycemic Index Foods Shopping List of 101 Low Glycemic Index Foods - Free Download
Join our newsletter for the latest low glycemic tips and updates! Glycemic Gourmet Newsletter

Products

low glycemic index cookbook