Does Hair Loss Reduce After Shaving Head?

No - shaving does not affect hair loss. It will change the appearance of the scalp, and may alter the appearance of hair density, as the length of the hair and how it is styled can greatly affect the appearance of hair density. Genetics, hormones, and medical conditions can play a role in hair loss, but shaving does not. If hair loss is significant, hair transplantation may be an option.
All the best,

This is an urban legend, old wives tale, a misconception.For men, the most common cause of hair loss is genetic male pattern balding. Shaving has nothing to do with hair loss reduction (other than you probably won't see the long hairs that are falling out since you shaved).

Shaving your head may disguise hair loss, but it will not have any affect on the condition itself. Whether hair is thinning due to pattern baldness, or some other cause, it is usually either a hormonal or nutritional reaction at the root of the problem. The origin of the condition must be addressed in order to reduce hair loss.

No, shaving your head will not affect the rate of hair loss.  Hair loss is most strongly determined by genetics.  Keeping the hair shaved may reduce the noticeability of shedding as the hairs are shorter, but otherwise will not contribute.

Unfortunately, shaving your head will not decrease hair loss. For the most part, hair loss is caused by genetics, or medication, or a number of other issues. However, some short hair cuts can help to hide hair loss where it sits. There's lots of information online for suggested haircuts to help hide minor hairless.