Hello and welcome to HCM,

Masturbation does not lead to any sexually transmitted disease.
Excessive masturbation and thus ejaculation leads to decrease in semen amount in subsequent ejaculation.
An abstinence of 1-2 days will bring back the semen amount to normal.
Masturbation is a harmless habit but an excess can have deleterious effect like skin related problems in the external genitalia, however, sexually transmitted disease will not be acquired by simply masturbating alone.
Low hemoglobin occurs due to nutritional deficiencies, blood loss, increased breakdown of red blood cells. etc.
A complete hemogram and red cell indices are required to know the cause of low hemoglobin.
Management can be planned after getting these investigations done.
Masturbation does not lead to low hemoglobin content.

Thanks and take care
Dr Shailja P Wahal

Masturbation is part of normal human sexuality.By masturbating you are reaching your orgasm and ejaculating,which means that you lose sperms.When it is done at the frequency that you have mentioned,sperm stores will definitely decrease.Weakness in erection will also occur.But ,sperm production mechanism is not affected.So,if time is given sperm stores will be refilled.It takes about 3-4 days for formation and maturation of sperms.So a gap of 1 week or so without masturbation should bring the sperm count back to normal.Persistent low sperm counts would require more detailed investigation.So also does your aneamia. Hb of 8 is too low for your age and sex and it is unlikely that masturbation had anything to do with it.
In the longer run it is advisable that you try and get out of this masturbation habit.Just like smoking or alcohol its an addiction.Try to reduce the frequency in the beginning and then slowly crawl out of it.Some measures like loose dress, diet and exercise also have a role in increasing sperm counts.
All the best for your future.