Can you tell me what you suggest if a man takes off his testicals will he not produce anymore testosterone?

Yes and...: Some 95-97% of male hormone comes from testicles so the men after removing both testicles require some form of testosterone supplement either by mouth or by injection or through skin patch or cream, and follow-up as monitored through t-testing. And some 3% of male hormonal activity comes from adrenal gland. Note: practicing healthy lifestyle will benefit anyone which wish to live a long life.