28 Years Old, ED Issues

SHBG is very high. SHBG is made in the liver. Some liver problems can increase SHBG, as well as some other medical issues or starvation diets.

High SHBG creates more SHBG+T that is non-bioavailable and also inflates TT so TT overstates your T status.

We normally expect high SHBG to lower FT and your FT is very good. So this is odd and creates some doubt about what is going on. Your problem does not seem to be low-T.

Low thyroid function as most of the same symptoms as low-T.
See last paragraph to evaluate.

What is your history of using iodized salt?
Outer eyebrows sparse?
Do you feel cold easily?

Please read the stickies found here: About the T Replacement Category - #2 by KSman

  • advice for new guys - need more info about you
  • things that damage your hormones
  • protocol for injections
  • finding a TRT doc

Evaluate your overall thyroid function by checking oral body temperatures as per the thyroid basics sticky. Thyroid hormone fT3 is what gets the job done and it regulates mitochondrial activity, the source of ATP which is the universal currency of cellular energy. This is part of the body’s temperature control loop. This can get messed up if you are iodine deficient. In many countries, you need to be using iodized salt. Other countries add iodine to dairy or bread.