In patients with anxiety, there is an increased level of catecholamine, particularly norepinephrine and epinephrine. Patients performing transcendental meditation had stable levels of catecholamine. This in turn regulated the sympatho-adrenenal medulla system, resulting in stable blood pressure (Infante, 2001).
Meditation has shown to be beneficial in sleep related problems.
Transcendental meditation: A double-edged sword in epilepsy: Transcendental Meditation is derived from ancient yogic teachings. Both short- and long-term physiological correlates of TM practice have been studied. EEG effects include increased alpha, theta, and gamma frequencies and increased coherence and synchrony. Neuronal hyper synchrony is a cardinal feature of epilepsy, and subjective psychic symptoms, apnoea, and myoclonic jerking are characteristic of both epileptic seizures. Clinical studies of similar techniques suggest that meditation has a potential antiepileptic therapy.
In various studies, it has been suggested that behavioural phenomena have an underlying epileptic basis, and the potential efficacy for seizure reduction may translate into improved quality of life. However, more understanding is warranted by clinical trials before a blanket statement regarding the efficacy in seizure disorder is made (Yardi, 2000).
Smoking and Alcohol dependence: Substance Dependence
A study by Bowen et al. (2007), in a population of alcohol dependent explored the role of Vipassana, a mindfulness meditation practice emphasizes acceptance rather than suppression of unwanted thoughts. They concluded that Vipassana was effective in reduction in substance use as compared to controls. This was achieved as Vipassana meditation course volunteers reported greater reduction in attempts to avoid unwanted thoughts.
In a study by Frankel (1998), in patients with psoriasis found that meditation helped as an adjuvant therapy. The rate of recovery of plaques was 3.8 times faster in the meditation group as compared to control, this was achieved in as little as four weeks time.
Chronic back pain
Back pain is an significant public health problem globally and is the most commonly reported reason for use of complimentary alternative medicine particularly yoga. Asthnga yoga and Iyengar yoga, have been found to be efficacious in patients with low back pain. Iyenger yoga has derived from Asthanga yoga, which consists of eight limbs including morale injunctions, rules for personal conduct, posture, breath control, sense withdrawal, concentration, meditation and self realization (Williams, 2005). Krusen, known as one of the early fathers of physical medicine, has credited yoga posture exercises as a means to correct spinal slumping, and thereby improve the respiratory capacity. Stretching of muscles, which produce propioceptive stimulation thereby relaxing muscle tension and restoring optimal muscle tone and posture
Depression is among the five most common disorders seen in primary care. Disability caused by depressive disorder rivals that of coronary artery disease and is greater than disability caused by chronic lung disease and osteoarthritis according to medical outcome study. Cost of depressive disorders in terms of treatment, missed work and loss of function is 43 billion US dollars annually. There have been various studies that have shown to be efficacious as an adjuvant therapy in patients with depressive disorder. (Pilkington et. al., 2005)
The above-described paths of yoga help the individual in integrating the personality and steadying the mind by changing the attitude and motivation, by developing health and correct habits and by modifying priorities and values of life.
Breathing exercises help in bio-energy control, which then stabilizes emotional upheaval of illness. Yoga Asanas manipulate nervous system and divert body energy to establish the equilibrium of physical, mental and spiritual aspect of the individual's life. Yoga hygiene not only removes the habit of unhealthy nutrition, but also establishes homeostatic balance. Somatic symptoms evolve due to fault in psychic energy distribution as explained in psychology. Yoga helps in re-channeling the psychic energy (Singh, 2006).
Restorative yoga for treatment of hot flushes has been found to be effective as there was a significant decrease in mean number of hot flushes by 34% from baseline after 8 weeks of intervention. It has no adverse effects and has been suggested to be efficacious in middle-aged women (Cohen, 2007; Khalsa, 2004)
Yoga in treatment of carpal-tunnel syndrome (Winston, 1999) : Carpel tunnel syndrome is compressive neuropathy of the medial nerve in the carpel tunnel, its more common in women than men, as women have smaller carpel bone, hence less space to accommodate the nerve of similar diameter. With the extensive use of computer keyboard, the wrong posture has led to an increase in the number of new cases in the recent past. In a randomized control trial, it has been shown that eight weeks of Yoga has been found to be beneficial. There was significant reduction in the pain, and better grip strength (Sequeira, 1999).
Similar to breast cancer, studies of people with prostate cancer suggest that melatonin levels are lower compared to men without cancer, and test tube studies have found that melatonin inhibits the growth of prostate cancer cells. Meditation is a valuable addition to the treatment of prostate cancer. The positive effects of meditation may be due to a rise in levels of melatonin in the body.
With the practice of asanas and meditation one can achieve weight loss to a greater degree in a short span of time. Weight can be reduced faster then most diets.