Mongolian doctors prescribed this superfood to fight the flu , tuberculosis and cancer. In Sweden , it is said that the Vikings owed their legendary physical strength and remarkable endurance. It is said also that the Chinese emperors sent expeditions to Siberia to bring this precious root.
Modern medicine has begun to take an interest in rhodiola rosea in the early 1960s, and it was not until 1965 that the first scientific studies were published. This interest has long been limited to a small circle of Russian and Scandinavian researchers, so that the majority of articles were written in Slavic and Scandinavian languages. In addition, these articles were published in journals that are not read by the proponents of modern Western medicine (they are not listed in the medical database Medline) . All this explains why the plant is still relatively unknown in the West.
An adaptogenic herbIn 1947, a prominent Russian researcher named Lazarev formulated the concept of adaptogen to describe a substance that helps to build resistance to all areas of bodily stress such as extreme heat or cold, toxic chemicals, sleep deprivation, and depression while producing a normalizing influence on the body. The important thing with an adaptogen is that it is able to adapt to what the body needs and keep the body in balance. The adaptogenic herbs such as rhodiola , ginseng andEleutherococcus , affect many organs and psychological functions.
Tests using a standardized extract of Rhodiola (SHR -5 ®) were conducted between 2000 and 2003 by doctors on students during exams periods and young male volunteers placed under stress and fatigue. Compared with control groups, participants generally seen their condition improve significantly (concentration, wellness, fitness, motor coordination, academic performance, capacity for intellectual work, reducing fatigue, etc. .) .
Thus in 2009, a clinical double-blind trial with placebo provided further evidence of the benefits of this golden root. The extract SHR -5 ® , administered as 288 mg 2 times daily for 4 weeks, significantly improved the status of people complaining of fatigue caused by stress. Their level of attention and increased the amount of cortisol in their saliva (an indicator of stress) decreased.
On the other hand, judging by the results of a preliminary U.S. study, rhodiola (340 mg extract per day for 10 weeks) would reduce the symptoms of anxiety disorder.
In a study without a placebo group, Russian researchers reported that superfood rhodiola rosea had the effect of regulating the menstrual cycle in 25 of 40 women with amenorrhea. The rules are returned within 2 to 8 weeks of treatment and, thereafter, a pregnancy occurred in 11 of women.
During a free trial conducted in Russia with 35 men suffering from erectile dysfunction or premature ejaculation placebo group, 26 subjects experienced an improvement in sexual function with rhodiola .