I am very curious to see where this research goes. At the risk of sounding like an absolute nut-case, I've been experiencing significant cognitive decline since getting divorced and becoming sexually active. Granted, I went through a traumatic experience(divorce), developed sleep apnea(treated for ~2 years), and am in my mid-40s, so my concerns are probably unfounded. That said, I've had my apnea under control for some time, I've gotten fit, and tried every combination of supplements I can think of. My hormones and blood work all look fine. Maybe I'll try some valacyclovir and see what happens.