In several studies, mindfulness meditation appeared to increase levels of T-cells or T-cell activity in patients with HIV or breast cancer. This suggests that mindfulness could play a role in fighting cancer and other diseases that call upon immune cells. Indeed, in people suffering from cancer, mindfulness appears to improve a variety of biomarkers that might indicate progression of the disease.  In another study, elderly participants were randomly assigned to an eight-week Mindfulness-Based Stress Reduction (MBSR) course or a moderate-intensity exercise program.

JM: We had the idea a few years ago to institute five minutes of silent meditation before staff meetings. People were enthusiastic about the idea, and we’ve been doing it ever since.

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Mindfulness can help combat bias: Even a brief mindfulness training can reduce our implicit biases and the biased language we use. One way this works, researchers have found, is by attenuating the cognitive biases that contribute to prejudice.

Teachers trained in mindfulness also show lower blood pressure, less negative emotion and symptoms of depression, less distress and urgency, greater compassion and empathy, and more effective teaching.

A 2015 study looked at people who score high on a mindfulness awareness test, and found that they had a healthier cardiovascular risk profile than people with lower scores. One small pilot program also found that mindfulness training helped decrease depression.

How does it work? To find out, researchers in the United Kingdom interviewed 11 adults who had experienced three or more episodes of severe depression, and had undergone MBCT within the previous three years. They analyzed the interviews to create a model, published in the journal Mindfulness

, argues that there is still much we don’t understand about mindfulness and meditation. Worse, many scientists and practitioners don’t even agree on the definition of those words. They end the paper calling for “truth in advertising by contemplative neuroscience.”

Recently, researchers have been exploring this question—with some surprising results. While much of the early research on mindfulness relied on pilot studies with biased measures or limited groups of participants, more recent studies have been using increase positive energy less-biased physiological markers and randomly controlled experiments to get at the answer.

JM: There are many. Some of the earliest studies, which involved the Mindfulness-Based Stress Reduction program founded by Jon Kabat-Zinn at the University of Massachusetts Medical School, showed that mindfulness can help ease stress. Mindfulness fosters positive emotions and helps provide resilience against negative experiences. There’s also evidence that the practice of mindfulness promotes empathy and a sense of compassion. Indeed, brain imaging research shows that a half hour of mindfulness meditation a day increases the density of gray matter in parts of the brain associated with memory, stress, and empathy.

PJ: Some tech companies have been criticized for harsh working conditions. Could mindfulness training become a “Band-Aid” fix to serious workplace problems?

Any amount of meditation is better than no meditation at all. But the benefits of meditation are compounded when you do it regularly. And daily? Even better. A daily meditation practice will yield benefits that will reverberate into every area of your life.

Awareness gave them more choice in how to respond, instead of becoming swept up in escalating negative emotion.

Studies have found effects on markers of inflammation, too—like C-reactive protein, which in higher levels can harm physical health. Research shows that people with rheumatoid arthritis have reduced C-reactive protein levels after taking an MBSR course versus being on a waitlist for the course.