|Tea: An anti-oxidant carb-blocker with class - The Britons do it right - the always have a cup of tea with their scones.|
Commercial teas turn out to be carb-blockers
In said paper Ganiyu Oboh and his colleagues from the Federal University of Technology and the Obafemi Awolowo University in Nigeria report that:
"The antidiabetic property of the teas could be attributed to their inhibitory effect on carbohydrate hydrolyzing enzymes implicated in diabetes and their antioxidant activities." (Oboh. 2014)And despite the fact that this still is a hypothesis, the results of their would provide us with another mechanism to explain the previously reported beneficial effects of regular consumption of tea (in general!) on type II diabetes risk.
|"Milk, Tea & Honey - Two Things Don't Belong: Milk & Sugar Potently Reduce Antioxidant Effects of Green & Black Tea " Chi Latte isn't just sugar bomb, the milk in the "chi" blocks will hinder the absorption of the healthy catechins | more|
- one green tea (GT),
- two black teas (BT1 and BT2), and
- one formulated herbal preparation for diabetes (ADT)
More than just antioxidants!?
If you take a closer look at the ADT formula (no, that's not "ATD" the anti-aromatase inhibitor with anti-libido and anti-androgen side effects | learn more), even a "non-noob" who has long lost all faith in the grandiose promises of the supplement industry would say: "Hey that could work!" Why? Well...
Figure 1: 2,2-Azizobis (3-ethylbenzo- thiazoline∼6-sulfonate; ABTS) scaven- ging ability and ferric reducing property of the teas (Oboh. 2014)
- Radix puerariae which is also known as "Kudzu root" contains puearin, which is a scientifically proven antioxidant that helps with diabetes and cariovascular disease (Wong. 2011).
- Radix ophiopogonis is another anti-oxidant TCM staple with proven anti-diabetic effects (Chan. 2008)
- Hawthorn, Chinese Yam and Solomon seal rhizome are likewise potent antioxidants, although direct anti-diabetic effects are not well-established they may help sooth the symptoms / consequences of high blood sugar (specifically heart disease; Walker. 2006; Chang. 2004; Khan. 2010)
In the end, antioxidants were yet not what the researchers were really interested to begin with. What Oboh et al. wanted to know was whether or not there may be another way by the means of which teas exert their epidemiologically established effects.
|Figure 2: Inhibition of 𝛼-amylase (left) and 𝛼-glucosidase (right) by aequeous extracts from some commercially available teas (Oboh. 2014). GT: Green tea; BT: Black tea; ADT: antidiabetes tea.|
- Chan, Judy Yuet‐Wa, et al. "Protective effects of an herbal formulation of Radix Astragali, Radix Codonopsis and Cortex Lycii on streptozotocin‐induced apoptosis in pancreatic β‐cells: an implication for its treatment of diabetes mellitus." Phytotherapy Research 22.2 (2008): 190-196.
- Chang, Sue-Joan, et al. "Chinese yam (Dioscorea alata cv. Tainung No. 2) feeding exhibited antioxidative effects in hyperhomocysteinemia rats." Journal of agricultural and food chemistry 52.6 (2004): 1720-1725.
- Oboh, Ganiyu, et al. "Interaction of Some Commercial Teas with Some Carbohydrate Metabolizing Enzymes Linked with Type-2 Diabetes: A Dietary Intervention in the Prevention of Type-2 Diabetes." Advances in Preventive Medicine 2014 (2014).
- Huxley, Rachel, et al. "Coffee, decaffeinated coffee, and tea consumption in relation to incident type 2 diabetes mellitus: a systematic review with meta-analysis." Archives of Internal Medicine 169.22 (2009): 2053.
- Islam, Md. "Effects of the aqueous extract of white tea (Camellia sinensis) in a streptozotocin-induced diabetes model of rats." Phytomedicine 19.1 (2011): 25-31.
- Khan, Haroon, et al. "The antinociceptive activity of Polygonatum verticillatum rhizomes in pain models." Journal of ethnopharmacology 127.2 (2010): 521-527.
- Walker, Ann F., et al. "Hypotensive effects of hawthorn for patients with diabetes taking prescription drugs: a randomised controlled trial." The British Journal of General Practice 56.527 (2006): 437.