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"  As you may have experienced when trying to force your boyfriend to watch The Real Housewives franchise, guys can be grumpy. Beware, it&amp;#039;s only going to get worse as he ages. Grumpy Old Man Syndrome (see: your grandpa) is an actual scientific condition, according to NBC News. Citing Mayo Clinic research, the report says that dipping testosterone levels as men age can bring on cranky moods.  &amp;quot;Testosterone is a hormone that grows muscles, reduces fat in the body, affects energy, and improves sexual desire,&amp;quot; Ridwan Shabsigh, MD, head of the International Society of Men&amp;#039;s Health, told NBC. &amp;quot;However, it also has neural-psycho effects. And in some men we encounter in our practice, those affects can be mostly visible: low mood and irritability.&amp;quot; Diabetes and kidney disease can lead to cranky behavior\u2014and ensuing cries of &amp;quot;Get off my lawn!&amp;quot; But there is good news here: Testosterone levels in men don&amp;#039;t begin declining until after age 60. So, really, there&amp;#039;s no excuse for your man to be a grump now! Follow Michelle on Twitter. "^^<http://www.w3.org/2001/XMLSchema#string>
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