Red light therapy (RLT), also known as low-level laser therapy (LLLT) or photobiomodulation (PBM), involves exposing the body to low levels of red or near-infrared light. This non-invasive treatment has garnered attention for its potential benefits in promoting longevity and overall health.

How does RLT work?

RLT operates by stimulating the mitochondria—the energy-producing components within cells. Exposure to specific wavelengths of red or near-infrared light enhances mitochondrial function, leading to increased production of adenosine triphosphate (ATP), the primary energy currency of cells. This boost in cellular energy facilitates improved cell repair, regeneration, and function. Additionally, RLT has been shown to reduce inflammation and oxidative stress, both of which are associated with aging and various chronic diseases.

PMC

Scientific Evidence Supporting Longevity Benefits

Research into the longevity benefits of RLT is ongoing, with several studies indicating promising outcomes:

• Cardiovascular Health: A study highlighted by the University at Buffalo suggests that long-term exposure to low-dose near-infrared light may benefit heart health and longevity. The research indicates that such exposure can improve mitochondrial function in cardiac cells, potentially leading to enhanced heart performance and reduced age-related decline.
  University at Buffalo

• Brain health and Cognitive performance: Red and infrared light can influence brain biology and potentially improve cognitive longevity: Mitochondria, which produce energy for the brain, act as photoreceptors. Red light excites mitochondrial proteins, enhancing energy production (ATP) and releasing nitric oxide, which improves blood flow and oxygenation. It also promotes brain-derived neurotrophic factor (BDNF), aiding neuron growth and neuroplasticity thus enhancing memory and learning. Finally it increases longevity proteins (e.g., SIRT1 and PGC-1α) and reduces reactive oxygen species during brain stress.

• Lifespan Extension in Animal Models: Research published in the journal Aging and Mechanisms of Disease demonstrated that daily exposure to 670 nm red light increased the lifespan of fruit flies by 100–175%. The treated flies exhibited elevated ATP levels and reduced inflammation, suggesting that RLT may positively influence longevity by enhancing mitochondrial efficiency and reducing inflammatory responses.
  PMC.

Several human clinical trials also presented promising results, showing increase in blood oxygenation levels in the prefrontal cortex, improved frontal cognitive function of older adults and augmented neurocognitive function.

Unfortunately choosing a red light therapy device today is an onerous task with hundreds of different brands and devices to choose from and almost no regulation. In the coming weeks we will be reviewing the most reputable manufacturers and compose a list for you of the top brands in the market today that you can trust and provide a good value for your money.