Low Carb and ED - Connection?

[Vince]

The effects of a low carbohydrate diet on erectile function and serum testosterone levels in hypogonadal men with metabolic syndrome: a randomized clinical trial - BMC Endocrine Disorders

Purpose Metabolic syndrome is a risk factor for several diseases. The relationship between metabolic syndrome and hypogonadism is well known. Our objetive is to assess whether a low carbohydrate diet can increase total serum testosterone and improve erectile function in hypogonadal men with...

bmcendocrdisord.biomedcentral.com

Sounds like low carbs prevents ED.

Conclusions​

Low carbohydrate diet may increase serum levels of testosterone and improve erectile function in hypogonadal men with metabolic syndrome.