By Yukiaki Kuroda
During the process the final 20 years, the well-being results of tea and its catechins were docmnented in nmnerous clinical experiences and the clinical foundation of those results has been elaborated. Professor Kuroda and Dr. Hara supply during this volmne a translation of an intensive and huge ebook released prior (in Japanese), on the way to be of substantial curiosity to scientists worldng within the box, and to individuals of most of the people attracted to naturaJ methods of preserving health and wellbeing. either authors are themselves eminent researchers with vast event. Dr. Kuroda is better recognized for his guides applying tissue cultures. Dr. Ham has released nmnerous learn papers at the health and wellbeing results of eco-friendly tea and its catechins. This booklet offers a entire evaluate of the ancient use of eco-friendly tea in Japan and somewhere else, through an outline of the numerous sickness stipulations opposed to which those teas have preventive (protective) results. Of specific curiosity to "senior voters" is the bankruptcy at the skill of tea elements to ameliorate a variety of age-related ailments together with melanoma, arteriosclerosis, and diverse sorts of senile dementias. For scientists and others attracted to infectious ailments as a result of micro organism and viruses, a bankruptcy facing the power of tea elements to inhibit those organisms might be of exact interest.
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Etal,I991). 1. 3. Hypotensive action of tea drinking in humans Do tea catechins also show similar hypotensive activity on blood pressure in humans to what they do in rats? , Polyphenon) for three months. Their blood pressures were determined before and after taking catechins. As shown in Figure 3. 4, both the maximum (systolic) and the minimum (diastolic) blood pressures HEALTH EFFECTS OF TEA AND ITS CATECHINS 45 were significantly lowered by taking tea catechin. After taking tea catechin, there was a swprising drop in the bkxx:l pressure ofa hypertensive person with a high systolic blood pressure of 170 mrn.
44 YUKlAKl KURODA AND YUKIHIRO HARA 100~--------------~~ , I ~ .. ~ 50 ' Normal diet ::l . 5% catechin diet C/) Age (week) Figure 3. 3. ,. 1990). 'Si J: 170 110 160 rE 100 150 §. E e:::I 90 e §. 140 e:::I I/) I/) e I/) I/) 130 Q, 'C 0 0 Q, -g 120 80 iii 0 iii 110 70 100 60 90 Minimum (diastolic) blood pressure Before taking catechin After taking catechin Before taking catechin After taking catechin F"JgUre 3. 4. Etrectofcatechinadministratioooo human blood pressure. ,etal,I991). 1. 3. Hypotensive action of tea drinking in humans Do tea catechins also show similar hypotensive activity on blood pressure in humans to what they do in rats?
Oguni, et aJ. conducted a survey on the frequency of drinking green tea for people between the ages of35 and 70 in the three Kawanes (3K towns) where stomach cancer mortality is low and Osuga town (0 town) where stomach cancer is high. The resuIts obtained are shown in Figure 2. 11. To the question: "How frequently do you drink green tea? :111 2 75 40-44 7a 50 ..... n 111-6. :1. 37 12 10 11 46-41 14 II ... 50.... 111-6. 17 37 37 11 10 40 ... 10.... 20 20 Iii IS0 0 100 (%) o Town 40-44 11 ao Three limes IdlY 1i2 30 Age Group (y•• rs) ao ...