Is there light inside our cells?
Yes, there is light inside our cells! Here are some key points about light inside cells:
- Mitochondria – These cell organelles that generate energy for the cell produce a small amount of bioluminescence during cell respiration. The emitted light is not visible to the naked eye, but can be detected with sensitive equipment.
- Bioluminescent organisms – Many marine creatures like jellyfish contain luciferin, a molecule that emits light when it reacts with oxygen. This bioluminescence helps them scare predators, attract prey, or find mates.
- Fluorescent proteins – Some proteins in cells will absorb light at one wavelength and then emit light at a different, lower energy wavelength, producing fluorescence. Jellyfish green fluorescent protein is commonly used in biotechnology as a marker.
- Laser manipulation – Focused laser beams can be used to trap, move or otherwise manipulate organelles and molecules inside living cells, although this requires specialized equipment. The beams propagate through the cell interior.
- Optogenetics – Cells can be genetically engineered to produce light-sensitive ion channels, allowing researchers to control their electrical activity with light pulses. The light penetrates into the modified cells.
So while our cells don’t naturally glow visibly, there are many examples where light plays important roles inside living cells, whether through natural bioluminescence, fluorescence, or experimental techniques involving lasers and optogenetics.
Are you familiar with “cellular meditation”?
Yes, I am familiar with “cellular meditation”. It is a spiritual practice that involves connecting with the consciousness of our cells. The idea is that each cell in our body has a form of consciousness and we can communicate with them through meditation.
This practice was developed in the 1980s by American therapist Joan Hafer and is inspired by cell biology as well as Eastern beliefs about vital energy.
The goal of cellular meditation is to unify the body and mind, allow our cells to express themselves and rebalance. We imagine our body as a society of cells that we can have a dialogue with. During the meditation, we focus on the sensations in each part of the body to detect “sleeping” or suffering cells and send them soothing messages.