Biome and meditation, what you eat and drink may be exerting a strong influence on your meditation practice.
One of the biggest problems in researching the benefits of meditation is understanding the potential confounds. In essence, what factors other than the meditation method itself exert an influence on subsequent behavior. Lifestyle questionnaires normally reveal significant differences between long standing meditators and the wider population. Given the range and diversity of meditation methods available, generalisations are quite difficult . However I’d expect experienced meditators from the Buddhist schools to eat less meat and take fewer intoxicants than the wider population. There are also more subtle variations. For example, in some approaches, meditators may drink alcohol yet abstain from scallions (the food group that includes garlic and onions). Another group might have a tendency to eat meat but not consume any food after their lunchtime meal. So does this matter and if so why?
The emerging research of the human microbiota (microorganisms living in or on humans, primarily in the gut) is demonstrating an increasingly close connection between gut bacteria, health and wellbeing. This is a dynamic area of enquiry but studies have implicated gut bacteria in conditions as diverse as obesity, migraine and depression. Typically science demonstrates a correlation between gut bacteria and a particular condition. For example people that suffer from migraines tend to have different bacteria when compared to people not suffering from migraines.
The key message is that meditators should think about what they eat if they want to maximize the benefits of their meditation practice.
The early signs are that the human biome may be more influential than causal in health. Meaning that your gut flora makes it more or less likely that you will or won’t suffer from a particular condition. Our gut flora is established at birth but it is subject to changes throughout our lives. We introduce bacteria from a range of sources, primarily from what we eat and drink. So if, for example, it was discovered that bacteria associated with eating chicken was linked to depression (which it isn’t as far as I know). It would have implications for meditators working with depression.
All this won’t come as any great surprise to long standing practitioners, many of the people in my own meditation circle already think about what they eat quite carefully. The influence of the biome on human health shouldn’t really make any difference to meditators. Reliable meditation is likely to have an effect in every instance, although your practice might be strongly influenced by what you eat.
The idea that a meaningful understanding of meditation can be reached through scientific research alone is being challenged.
Evidence of a lasting impact of meditation
As the body of research into meditation grows, the evidence of the actual effect of meditating increases. Western science rarely provides clear evidence of causality, particularly when it comes to understanding complex human behavior such as meditation. However there are a significant number of studies that document a relationship between meditation and brain activity.
In 2012 a study was carried out into the effects of meditation (mindfulness and compassion methods) that had a direct effect on the response of a part of the brain called the amygdala to emotional stimuli. The headline findings from this study are that the changes to the amygdala response were measured while people were not meditating, meaning that the effects of an eight week meditation programme were experienced outside of meditation practise. Meditation had been able to exert an influence on people’s brains during a non-meditative state.
More details of this study at Science Daily.
The Science of Meditation blog explores recent research in the contemplative sciences
Although it might appear that meditation holds a place in mainstream society, its precise role and the benefits it can bring are very much a subject of academic debate. Western science, particularly psychology, is struggling to establish a coherent definition of meditation which can be used to create a theoretical framework within which meditation might be fully understood. In plain speaking meditation is not always defined reliably, what its components are and how it works is subject to a degree of interpretation. One of the strengths of experimental psychology is replication, when the results of an experiment are repeated by different scientists at different times then the results tend to be viewed more favorably. Because of a lack of consistent definitions, satisfactory replication is big issue in meditation research.
This is not a criticism of meditation. I have seen and experienced the benefits of meditation over many years. But I would like to see significant reforms in the way meditation is researched. The Science of Meditation is a website that highlights and reviews some of the latest research into meditation. Recent blog entries include studies investigating the effectiveness of meditation in a clinical setting as well as workable definitions of the term mindfulness.