[davidgh]

Here are a couple of references for you.

Compulsive Internet Pornography Use and Mental Health: A Cross-Sectional Study in a Sample of University Students in the United States https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7835260/

Is Internet Pornography Causing Sexual Dysfunctions? A Review with Clinical Reports https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5039517/

[hgsgm]

Men can't win. After centuries of being regarded as sex fiends who can't last nore than 2 minutes in bed, now "difficulty achieving orgasm" and "decreased libido" are considered dysfunctions.

[onion2k]

Those states are two ends of a spectrum. There's a big 'normal, expected behavior' bit in the middle of that spectrum.