So I'm giving this whole low-carb / high-fat thing a try, not because I'll ever have to worry about excessive fat, but just to see what all the fuss is about. I've gotta say, I've never been more full of energy. I thought I got lots of energy from a high-carb diet, but I must have been comparing this to a mostly high-protein diet that I'd tried before -- high fat is the key.
Anyway, shoveling carbs in your face all day causes you to produce lots of insulin, which is involved in the hormonal regulation of fat accumulation. (By these stolen phrases, you can tell I've been reading Gary Taubes -- watch a lecture he gave here.) By screwing around so much with your endocrine system, you have to wonder what other effects it has on your mind and behavior.
Could this be behind the perception that guys these days are wimpier than their counterparts from the '60s or '70s or before? (The obesity epidemic and shift away from fat and toward carbs begins around the late '70s or early '80s.) With more fatty acids flooding my bloodstream to provide energy, I've noticed that I've become even more confrontational than before, and more callous and undaunted when something goes wrong. A particular girl doesn't want to dance with you? Who cares -- the most important girl is the next girl.
I'm sure this is why women are so screwed up today too. The women's lib movement obviously played a big role, but that was also about the time when the American diet changed so radically. We know how much women's behavior swings on a monthly basis due to hormonal changes. Maybe a grossly imbalanced diet is why we got psycho neurotic womenists, as opposed to the seemingly cooler ones of the Roaring Twenties, another time when women liberated themselves and pretended to be men, but when protein and fat consumption was much higher.
These ideas could be tested by measuring the personality trait Neuroticism, or some physiological correlate of it, when people follow a high-fat / low-carb diet vs. a high-carb / low-fat diet.
And then there are the obvious physical differences -- not just that there are lots more fatsos these days, but the polarizing effect that may have, i.e., more people hyper-aerobicizing their bodies. That was another consequence of the anti-fat movement -- lose weight by exercising a lot. Part of this may be a fashion change, of course. But part of it probably reflects larger changes among the population.
I've ranted here and elsewhere about how the early '70s were the last time the female sex symbols looked any good, and their different diet may play a role. The mid and late '70s are OK (google pictures of roller discos -- yeah baby), and even the girls in the Duran Duran videos of "The Eighties" (i.e., 1982 - 1984) look pretty good. But since then -- blech. And non-tubbo guys today look more like shaved apes than naturally fit.
Also a reason why most of our rock musicians are so whiny or dopey these days? Eat some fat and lighten up guys! Rockstars in the '70s may have been wearing skin-tight pants, but they had bigger balls. (Hard not to notice.)
Anyway, try it out. Lots of red meat, eggs, olive oil, hazelnut butter, almonds -- and milk, cheese, and butter if you're lactose-tolerant.