A to Z of Therapies
Yoga
May 9th, 2009
Yoga is a mind-body practice in complementary and alternative medicine (CAM) with origins in ancient Indian philosophy. The various styles of yoga that people use for health purposes typically combine physical postures, breathing techniques, and meditation or relaxation. The following provides a general overview of yoga.
Key Points
- People use yoga for a variety of health conditions including anxiety disorders or stress, asthma, high blood pressure, and depression. People also use yoga as part of a general health regimen to achieve physical fitness and to relax.
- It is not fully known what changes occur in the body during yoga; whether they influence health; and if so, how. There is, however, growing evidence to suggest that yoga works to enhance stress-coping mechanisms and mind-body awareness. Research is under way to find out more about yoga's effects, and the diseases and conditions for which it may be most helpful.
- Tell your health care providers about any complementary and alternative practices you use. Give them a full picture of what you do to manage your health. This will help ensure coordinated and safe care.
Overview
Yoga in its full form combines physical postures, breathing exercises, meditation, and a distinct philosophy. Yoga is intended to increase relaxation and balance the mind, body, and the spirit.
Early written descriptions of yoga are in Sanskrit, the classical language of India. The word "yoga" comes from the Sanskrit word yuj, which means "yoke or union." It is believed that this describes the union between the mind and the body. The first known text, The Yoga Sutras, was written more than 2,000 years ago, although yoga may have been practiced as early as 5,000 years ago. Yoga was originally developed as a method of discipline and attitudes to help people reach spiritual enlightenment. The Sutras outline eight limbs or foundations of yoga practice that serve as spiritual guidelines:
- yama (moral behavior)
- niyama (healthy habits)
- asana (physical postures)
- pranayama (breathing exercises)
- pratyahara (sense withdrawal)
- dharana (concentration)
- dhyana (contemplation)
- samadhi (higher consciousness)
The numerous schools of yoga incorporate these eight limbs in varying proportions. Hatha yoga, the most commonly practiced in the United States and Europe, emphasizes two of the eight limbs: postures (asanas) and breathing exercises (pranayama). Some of the major styles of hatha yoga include Ananda, Anusara, Ashtanga, Bikram, Iyengar, Kripalu, Kundalini, and Viniyoga.
The Status of Yoga Research
Research suggests that yoga may:
- Improve mood and sense of well-being
- Counteract stress
- Reduce heart rate and blood pressure
- Increase lung capacity
- Improve muscle relaxation and body composition
- Help with conditions such as anxiety, depression, and insomnia
- Improve overall physical fitness, strength, and flexibility
- Positively affect levels of certain brain or blood chemicals.
More well-designed studies are needed before definitive conclusions can be drawn about yoga's use for specific health conditions.
Side Effects and Risks
- Yoga is generally considered to be safe in healthy people when practiced appropriately. Studies have found it to be well tolerated, with few side effects.
- People with certain medical conditions should not use some yoga practices. For example, people with disc disease of the spine, extremely high or low blood pressure, glaucoma, retinal detachment, fragile or atherosclerotic arteries, a risk of blood clots, ear problems, severe osteoporosis, or cervical spondylitis should avoid some inverted poses.
- Although yoga during pregnancy is safe if practiced under expert guidance, pregnant women should avoid certain poses that may be problematic.
Training, Licensing, and Certification
There are many training programs for yoga teachers throughout the country. These programs range from a few days to more than 2 years. Standards for teacher training and certification differ depending on the style of yoga.
There are organizations that register yoga teachers and training programs that have complied with minimum educational standards. For example, one nonprofit group requires at least 200 hours of training, with a specified number of hours in areas including techniques, teaching methodology, anatomy, physiology, and philosophy. However, there are currently no official or well-accepted licensing requirements for yoga teachers in the United States.
If You Are Thinking About Yoga
- Do not use yoga as a replacement for conventional care or to postpone seeing a doctor about a medical problem.
- If you have a medical condition, consult with your health care provider before starting yoga.
- Ask about the physical demands of the type of yoga in which you are interested, as well as the training and experience of the yoga teacher you are considering.
- Look for published research studies on yoga for the health condition you are interested in.
- Tell your health care providers about any complementary and alternative practices you use. Give them a full picture of what you do to manage your health. This will help ensure coordinated and safe care.
Source: National Center for Complementary and Alternative Medicine
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