The reason I question is I used to have terrible mood swings, had female issues, and when having a hypoglycemic episode was not always nice. I made a major dietary change and everything improved drastically, especially moods. If I go too far off my diet the symptoms return with a vengeance.
When my middle daughter was in first grade, they wanted to put her on Ritalin. Late mornings, she would have periods of being cranky and it would not take much to put her into episodes of hysterical crying upset. No reasoning would work with her, she would cry and scream for up to 40 minutes until she fell asleep
I took her out and started to homeschool her (we were already homeschooling my oldest) and I started doing some research in the net. I noticed that a lot of her symptoms were consistent with hypoglycemia. I noticed that my wife's usual breakfast to her would be high-carb/sugar (cereal, pop tarts, etc) and the episode would occur about two hours after a high-carb meal, and the episode would stop immediately if I forced her to drink some fruit juice (to get her blood sugar back up) followed by some cheese or meat.
I changed her diet, made sure she got protein in the morning, and she's been fine. She's now in 4th grade, still homeschooled and doing well
My point is that a meal high in flour/sugar will cause your blood-sugar level to spike, then crash, with bad results. Meat and cheese, OTOH, digest slowly and put nutrients into your blood gradually and over a longer period of time
The typical diet today is constant sugar overload. Years of malnutrition is going to affect behavior. Is it the answer to all the problems facing marriages today, of course not, but hey it may greatly reduce the irritability, mood swings, PMS, anger, compulsive spending (compulsiveness is a symptom) lack of desire, etc...