My father has age-related muscle weakness independent of muscle mass. We've tried and tested various things including:
1. Increasing growth hormone/IGF-1 levels
(Worked only very little)
2. Increasing mitochondrial count/activity/function.
(Worked only very little)
3. Increasing sex hormones like testosterone via injections
(Worked only very little)
Now it seems the problem may be, besides loss of nerve cells, "leaky calcium channels".
What supplements/actions can target "leaky calcium channels" in aging?