Does infrequent shampooing cause hair loss?

OK so I’ve done some researching and found articles stating that hair training aka infrequent washing can lead to hairloss or accelerate it. I believe it’s because of buildup of sebum on the scalp? I’m not too sure on how that works. This scares me because I hardly shampoo, mainly using conditioner to wash or just water to clean my hair but I at least try to shampoo once or twice a month. My hair when I shampoo feels very poopy and looks very unhealthy compared to when I don’t shampoo. But if it accelerates hairloss like some articles claim I’ll be more then glad to start shampooing more.

Many of my patients tell me that they see homeless men with full heads of hair who probably never wash or shampoo. That is true, so shampooing is not necessary. When vigorously performed, frequent shampooing may pull out the miniaturized hairs that are about to fall out. Aggressive brushing after shampooing will pull out miniaturized hairs relatively easily.