You can block it. The unit won't heat or cool that room anymore though. The return air does effect supply air temp. And heat pump efficiency. With a 60 degree return air temp, the heat pump is more efficient then with a 70 degree return air temp.
We are simply getting contaminated causing otherwise healthy folks to lose the function of their kidneys and for a senior citizen who is already suffering sarcopenia this can be a death sentence because of the complexities associated with Renal Failure.
Although the etiology of sarcopenia is unknown, the correlation during aging between the loss of activity of satellite cells, which are endogenous muscle stem cells, and impaired muscle regenerative capacity has led to the hypothesis that the loss of satellite cell activity is also a cause of sarcopenia.e recently developed a genetic mouse model that allows for the specific, inducible depletion of satellite cells in adult skeletal muscle. The Pax7 CreER/+ ; Rosa26 DTA/+ (here referred to as Pax7 CreER-DTA) strain was generated by crossing Pax7 CreER/CreER and Rosa26 DTA/DTA strains.