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od and alleviating depression and early stage studies on people have shown some efficacy in improving physical and mental performance, alleviating fatigue, and reducing high-altitude sickness. A possible mode of action involves what could be described as “optimizing serotonin and dopamine levels”. It is said that this apparently happens by inhibition of the enzyme monoamine oxidase, which supposedly ties in with an effect on endorphins, the body's natural opiates.

The chemical composition and physiological properties of Rhodiola species are to a degree species-dependent, although some overlap in constituents and physiological properties does exist in many Rhodiola species.

Twenty-eight compounds have been isolated from the roots and above-ground parts of Rhodiola rosea, including twelve novel compounds. The roots contain a range of biologically active substances including organic acids, flavonoids, tannins, and phenolic glycosides. The stimulating and adaptogenic properties of Rhodiola rosea were originally attributed to two compounds isolated from its roots, identified as p-tyrosol and the phenolic glycoside rhodioloside. Rhodioloside was later determined to be structurally similar to the known glycoside salidroside found in several other plant species. Salidroside, rhodioloside, and occasionally rhodosin are used to describe this compound and are considered to be synonyms. Additional glycoside compounds isolated from the root include rhodioniside, rhodiolin, rosin, rosavin, rosarin, and rosiridin. These glycoside compounds are also thought to be critical for the plant's observed adaptogenic properties.

The adaptogenic properties, cardio-pulmonary protective effects, and central nervous system activities of Rhodiola rosea have been attributed primarily to its ability to influence levels and activity of monoamines and opioid peptides such as beta-endorphins.

Rhodiola rosea has also been shown to moderate against stress-induced damage and dysfunction in cardiovascular tissue. Treatment with Rhodiola rosea extract prevents the decrease in cardiac contractile force secondary to environmental stress in the form of acute cooling and contributes to stable contractility.

The new product is named Energize and is primarily made of the herb Rhodiola rosea. Rhodiola rosea is a plant known as the 'golden root', member of the Crassulaceae family that grows in cold regions of the world, the perennial plants grows in areas up to 2280 meters elevation. Rhodiola may help induce weight loss by activating the body's store of adipose lipase, a key enzyme that helps burn its fat stores. A Russian study found that participants who consumed Rhodiola rosea lost 20 pounds in three months, compared to just 7 pounds in those who took placebos. Rhodiola rosea also strengthens the immune system by reducing the effect of stress, which is known to weaken the body's ability to defend against illness. Studies have shown that Rhodiola may be of special benefit to athletes; it appears to help normalize heart rate after intense exercise, and increases protein synthesis and blood flow throughout the body. It may also lower blood pressure and decrease stress-induced arrhythmia. There have been no toxic side effects associated with this substance to date, and no tolerable upper limit has been established. Energiz本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。