Imagine you just stepped out of your time machine after being brought back to Muscle Beach in its prime. They arrive to meet people like Vic Tanny, Joe Gold (from Gold & # 39; s Gym), Jack LaLanne, Steve "Hercules" Reeves, Jack Delinger and later Dave Draper or even Arnold with his friends.
They were all hanging out and lifting instead of being in a commercial gym. Did you know anything special about sunlight?
The New Science
Fast forward to modern cutting-edge research by Dr. Peter Light, who studied the effects of light on fat cells or what research calls adipocytes (1
When the researchers exposed fat cells in a bowl to blue light, this caused an increased release of glycerol and a reduced lipid droplet size. Yes, that means the fat cells got smaller.
This is due to an increased rate of fat loss (lipolysis) or a decrease in the assembly of free fatty acids and the glycerol backbone, which is known as fatty acid esterification. In addition, smaller fat cells are healthier because large fat cells are associated with increased insulin resistance and inflammation (2, 3).
"When the wavelengths of blue light from the sun – the light that we can see with our eyes – penetrate our skin and reach the fat cells just below, lipid droplets decrease in size and are released from the cell. In other words, our cells don't store as much fat, "wrote Dr. Light (4).
The Caveat  It is not a double-blind, randomized, controlled trial for raising brothers, but it is super fascinating. Maybe the old school muscle beach lifters were out for something.
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- Ondrusova K., Fatehi M., Barr A., Czarnecka Z., Long W., Suzuki K. et al. Subcutaneous white adipocytes express a light-sensitive pathway that is mediated via a melanopsin / TRPC channel axis. Sci Rep. 2017; 7 (1): 16332.
- Henninger AM, Eliasson B., Jenndahl LE, Hammarstedt A. Adipocyte hypertrophy, inflammation and fibrosis characterize subcutaneous adipose tissue from healthy, non-obese people who are predisposed to type 2 diabetes. Plus one. 2014; 9 (8): e105262.
- Kim JI, Huh JY, son JH, Choe SS, Lee YS, Lim CY, et al. Lipid-overloaded enlarged adipocytes provoke insulin resistance regardless of inflammation. Mol Cell Biol. 2015; 35 (10): 1686-99.
- Press release "Reduced sunlight can contribute to weight gain in winter" Access April 4, 2020