Erectile dysfunction can be embarrassing and difficult to talk about for some men. Many men may feel like they need to hide their diagnosis from their partner. "Failure to communicate openly about erectile dysfunction can result in both partners drawing away from the relationship," warns Feloney. Remember that your partner is also affected by your problem; being open and honest is the best way to decrease fear and anxiety. Discuss options for achieving sexual satisfaction together, and be positive — most erectile dysfunction problems can be treated.
There can be both an indirect and direct way to achieve this. The reflex erection is the direct way, achieved by touching your penis to trigger the nerves in the lower part of your spinal cord and your peripheral nervous system. The psychogenic erection is the indirect way, via non-mechanical sexual stimulation (visual, for example) and sexual arousal. This activates the limbic system in your brain, sending electrical signals down to your erectile nerve centres via the lower regions of your spinal cord. The latter is why you can get both nocturnal or "morning glory" erections, rather non-erotically referred to as nocturnal penile tumescence. How romantic.
In an article on Men’s Health about things that wreck your erection, some examples of threats to an erection are sugar, lack of sleep, sleeping near a newborn baby, and lack of vitamin D. The common theme in the article is that reduced testosterone impacts your erection. Not all scientists agree with that. But there are definitely links between testosterone and erectile problems.