Here's one activity that can increase your natural killer cell production by 50%. Natural killer cells are part of your immune system that helps in fighting virally infected cells, tumor cells, and cancer cells in your body. This activity is called forest bathing or Shinrin-yoku. In Japanese, it means walking in the forest for 30 to 60 minutes per day, or at least going for a hike or trek once a month. Now, there is an organic compound emitted by the trees in the forest, which is called phytonci

Researchers found a significant boost in natural killer cell activity in men and women after they spent a weekend walking in the woods. The same results were even seen after just a one-day trip to the woods and with the same staying power of natural killer cell activity still boosted a week later. In a study comparing walking in a city versus walking in a forest, 80 percent of the subjects walking in the woods experienced a boost in natural killer cell activity, compared to only one in ten of th

CAR T-cell therapy: Mayo Clinic Radio