What exactly is shedding? Do you have hairs in your hand? How did you notice?
I use a little silicone hair scrubber thing in the shower and it does a good job at trapping the loose hairs into the brush. I always look at it after washing my head to see how much hair is on there. Its easily 5-6x the amount of hair on the brush when I am shedding vs when im not.
By shedding, I literally just mean youll start to notice hair everywhere around ya. Like you woke up, going through your morning routine, fix up your hair and go to brush your teeth only to look down and see hairs all over your sink or counter. Maybe around your pillow/bed and so on.
The brush in the shower is my go to to guage hairloss. Went from crazy brush full of hair to a literal 3-4 strands per shower when consistent with Minoxidil use.
You shouldn't really go by shedding. Hair loss occurs through gradual hair miniaturization. It could be years before you actually visibly notice hair loss, but its still occurring. It could also take years of meds before you fully restore your hair. IMO, if you value your hair, you should start a 5-AR inhibitor even if its a lower dose.
Yes, if you are actually loosing hair. We were talking about young healthy guy with no hairloss, but wanting to start a treatment as a peventative measure. Taking oral dht blockers have systemic affect on all dht receptors in the body, not just your hair follicles. This is why derms monitor your PSA levels when starting an oral treatment like finasteride. Same with Liver values and accutane.
The discussion was more about when one should consider starting preventative care than how to actually stop and reverse hairloss thats already happening. I agree once combating hairloss, oral fin will be the most effective. Till then, topicals like minoxidil can help prevent the hairloss from starting. Plus once you start these meds, you pretty much using them for life. I dont think oral dht meds should be your first line of defense for your hair especially as a preventative method.
Plus if your using dht-derived compounds remember that those cannot be further reduced, its already DHT. Thus oral meds wont have an affect. This is where RU/KX come into play imo. I dont mention topical Fin becuase If your gonna take fin, might as well just do the oral and have better results.
P.s yes, I know derms are more relaxed with bloodwork for accutane treatments, but when I talked to my derm he said he needs bloodwork to start and monitor till your on stable dose and then retest after treatment to make sure all is good