02/09/2021
Most people go into a sauna and come out feeling uplifted. But, is there something behind that feeling? 🔥
Mechanism #1
By simply sitting in the sauna, your heart rate increases to around 150bpm mimicking moderate intensity cardio. Blood flow to the heart and plasma volume levels increase.
Mechanism #2
Heat stress can also improve physical health through the gene Foxo3. The Foxo3 gene activates genes to allow for DNA repair, cell death, antioxidant genes and genes that a present is stem cell function and can be accredited to delaying ageing.
Mechanism #3
Increase in heat shock proteins (HSPs). These are activated by heat to ensure that cellular proteins maintain their 3D structure. Losing their 3D structure through everyday life can lead them to aggregate with other misfolded proteins, resulting in cardiovascular disease and neurodegenerative diseases. However, HSPs can help to ‘refold’ proteins to give them their 3D structure.
Mechanism #4
Upon experiencing heat stress, dynorphin (the opposite to endorphin) is activated and starts the binding process to Kappa Opioid Receptors to cool the body down. During this process, Mu Opioid Receptors count increases and their sensitivity to endorphin increase. In simple terms, the feel good factor feels even better!
Physical Benefits
Fatal coronary heart disease (CHD), fatal cardiovascular disease (CVD), and all-cause mortality have been shown to improve following the regular use of a sauna. Laukkanen et al. (2015) concluded that men who use the sauna 2-3 times a week are 27% less likely to die from CHD and CVD and those who used the sauna 4-7 times a week were 50% less likely to die from CHD and CVD in comparison to those that use the sauna 1 time per week.
Frequent sauna use also lowered all-cause mortality rate for those that used the sauna 2-3 times a week by 24% and those that used the sauna 4-7 times a week had a 40% lower all-cause mortality rate than those that used the sauna once per week.
There is s sufficient evidence to show that heat stress therapy is an effective way to improve both physical and mental health. However, more research is needed to outline an optimal protocol 📚