andropause
From Longman Dictionary of Contemporary Englishandropausean‧dro‧pause /ˈændrəʊpɔːz $ -droʊpɒːz/ noun [uncountable] the period in a man’s life when the amount of testosterone in his body begins to reduce, after about age 50 SYN male menopause —andropausal /ˌændrəʊˈpɔːzəl $ -droʊˈpɒː-/ adjective