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Thursday, February 5, 2015

The scientific power of meditation

AsapSCIENCE looked at the research on meditation and created this 3-minute video. Here are seven benefits, as listed by Business Insider:

1. Meditation can help you deal with stress and negative emotions.
Multiple studies have shown that meditation can help reduce levels of depression and anxiety, along with helping people tolerate pain better. The researchers conclude that mindfulness meditation in particular might help people deal with psychological stress, though they say that more research is needed into how meditation might help lead to positive mental health (beyond reducing effects of negative stresses).
2. At the same time, meditation could boost positive skills like memory and awareness.
Research shows that meditators have unique brains with well-developed areas that might be connected to the mastery of awareness and emotional control. While it's possible that people with such brains might be more likely to meditate in the first place, other research does show that after completing a meditation program there are changes in participants' brains that are connected to memory, self-awareness, and perspective.
3. Meditating for years is associated with brain changes that help you get along with others.
Buddhist monks and other long term meditation practitioners show much more developed brain regions associated with empathy, though the reasons for that are likely complex. Researchers have seen that meditation can also change brain waves, leading to higher levels of alpha brain waves — which are generally associated with a state of wakeful relaxation. This can help reduce negative moods and feelings including anger, tension, and sadness.

4. It doesn't take long to see meditation's benefits — just weeks can change your brain.
Several studies show that after an eight-week meditation program, participants had denser brain tissue in areas connected to learning, emotion regulation, and memory processing.
Additionally, they showed decreased amounts of grey matter in parts of the amygdala, a brain area connected to fear and stress. In a study published in Social Cognitive And Affective Neuroscience, researchers write that in general, people who stimulate an area of the brain repeatedly (generally by learning a skill) show an increase in grey matter, while not using an area of the brain decreases grey matter in that area. They write that in this case, participants who reduced their stress response the most were the ones that showed the biggest decrease in grey matter in this area of the brain.
5. The benefits of meditation extend to other parts of your body too, including your heart.
Mindfulness training has been connected to decreased blood pressure and a more variable heart rate — which is a good thing, meaning your body can better regulate blood flow depending on how much oxygen you need at the time. Researchers (and the American Heart Association) say a likely mechanism for this is that meditation could reduce the levels of stress hormones that can cause inflammation and other physical problems.
6. There are also signs that meditation can help boost your immune system — or at least help ward off the flu.
In a study, researchers took two groups of people and had one group complete an eight week meditation course. At the end of the eight weeks, the people in the meditation group showed increased left-side brain activity. At that point, the researchers injected both groups with the flu vaccine. The meditators had a stronger immune response (their bodies produced more flu-fighting antibodies), and the higher the level of left-brain activity in general, the greater the immune response.
7. Meditation may help prevent genetic damage.
One study showed that cancer survivors who completed a meditation program showed increased telomere length — telomeres are protein complexes that protect our genes, and shortened telomeres have been linked to various diseases. Researchers say that the possible mechanism for this is that reducing stress could help certain enzymes that lengthen telomeres, though more research in more diverse populations is needed.