Wednesday, December 1, 2010

jing luo, negative energy & nutrients (17)

What are the effects of nutrients on our health ? Nutrients can have marked effect on health. In the field of nutritional study, some nutrients are essential in maintaining the proper health and function of our bodies and without such nutrients our bodies systems will go astray and become malfunction, for instance, lack of vitamin C will produce scurvy disease and lack of vitamin B1 one will likely to get beriberi. Which are the best nutrients ? The naturally occurred nutrients are the best such as those derived from the plants as they can be readily absorbed by our bodies hence the term “bioavailability” which has been used to refer that the product can be readily absorbed by our bodies as compared with synthetic ones which usually are made from chemicals or inorganic materials. It is therefore most appropriate to know what are the essential nutrients which our bodies required and some of them are as stated below. Vitaman A- Vitamin A which plays an important role in vision, bone growth and formation of bones and teeth, repair of body tissues, reproduction, cell division, and cell differentiation (in which a cell becomes part of the brain, muscle, lungs, blood, or other specialized tissue.) Vitamin A helps to regulate the immune system, which in turn helps to prevent or fight off infections by making white blood cells destroy harmful bacteria and viruses. Vitamin A also may help lymphocytes (a type of white blood cell) to fight infections more effectively. Vitamin A promotes healthy surface linings of the eyes and the respiratory, urinary, and intestinal tracts. When those linings break down, it becomes easier for bacteria to enter the body and cause infection. Vitamin A also helps the skin and mucous membranes function as a barrier to bacteria and viruses. It helps to reduce the black spot due to the process of aging. Vitamin A also helps to reduce free radical and any lack of Vitamin A will affect the functionality of the skin cells which will result in lack of elasticity, dryness, roughness and dullness of the skin. Vitamin A that is found in colorful fruits and vegetables is called provitamin A carotenoid. They can be made into retinol in the body. Common provitamin A carotenoids found in foods that come from plants are beta-carotene, alpha-carotene, and beta-cryptoxanthin Among these, beta-carotene is most efficiently made into retinol. Deficiency of vitamin A may lead to night blindness, dry eyes, rough skin, impaired bone growth and susceptibility to respiratory infections. Vitamin B1 (Thiamine) Any excess of Vitamin B that is not used by our body will be discharged hence it is important that we do consume enough of Vitamin B everyday. Vitamin B1 helps to protect the nervous system and aids the function of heart, digestive system, stomach and intestine. Deficiency of Vitamin B1 will cause Beriberi which is a disease of the nervous system including weight loss, emotional disturbances, impaired sensory perception, weakness and pain in the limbs, irregular heartbeat and swelling of bodily tissues. Vitamin B2 (Riboflavin)- Deficiency of Vitamin B2 causes ariboflavinosi and the symptoms may include cracks in the lips, high sensitivity to sunlight, inflammation of the tongue, seborrheic dermatitis or pseudo-syphilis particularly affecting the scrotum or labia majora and the mouth, pharyngitis, hyperemia and edema of the pharyngeal and oral mucosa. Vitamin B2 helps to regenerate cells, assist the normal growth of skin, nails and hairs. Vitamin B2 also helps to improve vision and reduce tiredness of eyes. A German study found that previously it had been assumed that no plant contains a significant amount of vitamin B12, but the study revealed that Seabuckthorn not only contains all the vitamins B, its vitamin B12 content is as high as in liver. The clinical study shows that a lack of vitamin B12 causes skin disorders, anemia, digestive disorders, nerve damage, lack of appetite, irregular menstruation period, loss of memory, neurodegeneration and dysfunction of the mucous membranes. Vitamin E Vitamin E which is a fat-soluble vitamin. It is an antioxidant vitamin involved in the metabolism of all cells. It protects vitamin A and essential fatty acids from oxidation in the body cells and prevents breakdown of body tissues. It protects body cells against the effects of free radicals, which are potentially damaging by-products of energy metabolism. Free radicals can damage cells and may contribute to the development of cardiovascular disease and cancer. It also may protect against the development of cancers by enhancing immune function. Vitamin E can prevent the development of cancer and increase the immunity. Recent study conducted by medical and nutritional institute revealed that natural Vitamin E is more acceptable by our body than the synthetic one. Natural vitamin E exists in eight different forms or isomers, four tocopherols and four tocotrienols. All isomers have a chromanol ring, with ahydroxyl group which can donate a hydrogen atom to reduce free radicals and hydrophobic side chain which which allows for penetration into biological membranes. There is alpha, beta, gamma and delta form of both tocopherols and tocotrienols. Preliminary research has led to a widely held belief that vitamin E may help prevent or delay coronary heart disease. Researchers are fairly certain that oxidative modification of LDL cholesterol promotes blockages in coronary arteries that may lead to atherosclerosis and heart attacks. Vitamins E and other antioxidants remove wastes including peroxides, ailing and dead cells from blood thus avoiding damages to the artery walls. It is found that vitamin E may be important for prevention of neurodegeneration in humans [ aging and oxidation stress in neyurodegeneration- hiro Urano et.al]. Experiments also show that muscle lesions can be prevented with vitamin E [ Effect of Age and Dietary Fish on tocopherol status of C57BL/6Nia Mice- Simin Nikbin Meydani LIPIDS 33(11):1123-1129 (1998)] In 1960 a research institute discovered that a cell cultivate outside the body will die after undergoing about 60-70 subdivisions however if Vitamin E were to be added to it the cell will die after undergoing about 120-140 subdivisions. This means that the life expectancy is doubled ! It is therefore concluded that Vitamin E will delay the oxidation of cell which in turn will delay the process of aging. Vitamin E is the best anti-oxidant. Vitamin E helps to relieve cramp and stiffness of limbs.

经络、寒气及营养(17)

营养对健康有多大的影响? 营养对健康有极大的影响。在营养科学的领域,有些营养是必需的。没有了它,会导致一些病症。比如说缺乏了维生素 C, 会导致 坏血病,缺乏了维生素 , 脚气病。那一些营养最好呢? 当然是天然的营养, 那时从植物中取得的营养, 因为它们容易被身体吸收。我们接下来看看各营养的功能,缺乏它会引起什么的病症。 维生素 A 维生素A(vitamin A)又称视黄醇可由植物来源的β-胡萝卜素合成。维生素A维持正常的视觉反应,上皮组织的正常形态与功能。保持皮肤湿润,防止皮肤黏膜干燥角质化,护皮肤细胞,可使皮肤柔软细嫩,防皱去皱的功效,不易受细菌伤害,有助于祛除老年斑 。维生素A可促进生长、发育,强壮骨骼,维护头发、牙齿和牙床的健康。维生素A有助于维持免疫系统功能正常,能加强对传染病特别是呼吸道感染及寄生虫感染的身体抵抗力,有助于对肺气肿,甲状腺机能亢进症的治疗。维生素A也有助于清除自由基。缺乏维生素A,会使上皮细胞的功能减退,导致皮肤弹性下降,干燥,粗糙,失去光泽。 维生素 B1 (Vitamin B1-Thiamine)- 维生素B1又称硫胺素或抗神经炎素。和所有 B 族维生素一样,多余的 B1 不会贮藏于体内,而会完全排出体外。所以,必须每天补充 。在体内,维生素B1有保护神经系统的作用;还能促进肠胃蠕动,增加食欲。维生素B1还是维持心脏,神经及消化系统正常功能所必需的 。维生素B1缺乏时,可引起多种神经炎症,如脚气病菌,心藏不规律跳动和身体组织肿胀。患者的周围神经末梢有发炎和退化现象,并伴有四肢麻木,肌肉萎缩,心力衰竭,下肢水肿等症状。 维生素 B2 (Vitamin B2-Riboflavin )- 维生素B2又称核黄素。缺乏维生素 B2 将引起 口角炎 (口角乳(湿)白及开裂),唇炎,舌炎,阴囊皮炎,脂溢性皮炎(多见于鼻翼两侧)。维生素B2能促进发育和细胞的再生; 促使皮肤、指甲、毛发的正常生长;帮助消除口腔内、唇、舌的炎症; 增进视力,减轻眼睛的疲劳。 缺乏维生素 B2 将引起.恶性贫血(红血球不足),月经不顺,眼睛及皮肤发黄,皮肤出现局部红肿并伴随蜕皮,恶心,食欲不振,体重减轻,唇,舌及牙龈发白,牙龈出血,头痛,记忆力减退,痴呆,可能引起人的精神忧郁, 脊髓变性,神经和周围神经退化,舌,口腔,消化道的粘膜发炎。 德国科学家发现 沙棘 油不单含有所有的 维生素 B,而 其中维生素 B12与肝同比。Vitamin B12 (钴胺素)是素食者最容易缺乏的维生素,也是红血球生成不可缺少的重要元素,如果严重缺乏,将导致恶性贫血! 维生素 E 维生素 E 又称生育酚溶于脂肪 。它具有抗氧化作用,与多种酶一起构成体内抗氧化系统,保护着细胞骨架、蛋白质中巯基, 细胞内核酸等免受自由基的攻击。它保护身体细胞内的维生素A和必需脂肪酸被氧化和防止身体细胞分裂。它能保护身体细胞被自由基的破坏和自由基损害后的细胞引起心血管疾病和癌症。维生素 E 可防止癌症的发展, 加强免疫功能。 随着近代医学和营养学的发展,科学家们发现,与合成品相比,天然维生素E其实更符合人体的需要。 科学家认为低脂肪被氧化后将阻塞冠状动脉,而导致动脉粥样硬化和心脏病。初步研究已导致一个被广泛认为,维生素E有助于防止或拖延冠状动脉心脏病。维生素 E 和其他抗氧剂能从血液中排除垃圾 包括过氧化物,病死细胞从而避免损害动脉墙。因此,维生素E在维护免疫,神经,心血管正常运行,抗动脉粥样硬化、延缓衰老和抗癌上有一定作用。与此同时,维生素E还有一定的免疫功能,可以促进T淋巴细胞增殖和单核细胞分泌细胞因子,维他命E可以预防神经退化 [ ageing and oxidation stress in neyurodegeneration- hiro Urano et.al]. 试验还显示,维他命E可以预防肌肉损伤 [ Effect of Age and Dietary Fish on tocopherol status of C57BL/6Nia Mice- Simin Nikbin Meydani LIPIDS 33(11):1123-1129 (1998)]。 1960年研究机构发现一个奇迹:正常人体细胞在体外培养,一般分裂60-70代就会衰老直至死亡,但如果在培养中加入维生素E,奇迹发生了,细胞分裂120-140代后才衰老死亡。也就是说,人体细胞寿命多了一倍。 维生素 E 的功效为:-延缓细胞因氧化而老化, 是极好的自由基清除剂,能保护生物膜免受自由基攻击,有效的抗衰老营养素,提高肌体免疫力,保持血红细胞的完整性,促进血红细胞的生物合成,是细胞呼吸的必需促进因子,可保护肺组织免受空气污染, 预肪心血管病 。当体内维生素E充足时,肝脏就有能力解除一些物质的毒性。维生素 E 有助于减轻腿抽筋和手足僵硬的状况。