Calorie restriction and intermittent fasting can help regenerate brain matter
dailygalaxy.com
dailygalaxy.com
Avoid all foods with hydrogenated oils (promotes heart disease.)
Avoid homogenized milk (promotes blood vessel plaque, heart disease.)
Eliminate excess sugar and high fructose corn syrup. Substitute with agave nectar which is just as yummy and very low glycemic. (promotes diabetes and creates inconsistent blood glucose levels which promote obesity.)
Avoid refined carbohydrates, substituting whole grains, vegetables, sweet potatoes, nuts, legumes, berries, greens, etc. Substitute wheat for quinoa and teff. Substitute white rice for brown rice. (Refined carbs deplete B vitamins and promote glucose instability.)
Avoid all meat packed with sodium nitrate (promotes colon cancer). Look for "uncured" meats.
Avoid artificial sugars, flavors, colors. (Nearly all of them have unfortunate side effects.)
Try to get 90% of your protein from plant sources. (excess animal protein is associated with disease)
Go outside! (Sunshine promotes vitamin D which is critical for immune function, and vitamin D strongly prevents cancer.) While you're there, exercise! :)
Read: The China Study by Dr. T. Colin Campbell, Cancer-Gate by Dr. Samuel Epstein
As for the whole list, it's just a list of plausible theories to me; unfortunately, it would take quite a bit of tedious research to approach figuring out what's quackery. Could you recommend some high quality research (or surveys of it) for any/all of the above?
As for sun and cancer, sunlight is actually more helpful than harmful, and policy recommendations suggestion avoiding the sun are causing problems. http://www.news-medical.net/news/2005/03/23/8666.aspx You can get Vitamin D from supplements though.
For the rest of the things on the list, The China Study is where I suggest starting if your just getting into health and nutrition, and prepare to be blown away.
I don't think anything I mentioned is particularly disputed or hard to confirm with some Googling. There's opposition though. The dairy industry certainly won't tell you that homogenizing milk puts plaque in your blood vessels, for example. The meat industry doesn't want you to know about sodium nitrate, etc.
My argument is just that, for most people, there's something basic they're already doing routinely to sabotage their health, so trying calorie restriction without fixing those first is bad optimization.
My organic milk (I only buy it because I prefer the taste) is more homo. than cheap milk. I wonder if it's therefore worse in any meaningful way.
The other point of interest (to me) is that maybe buddhist monks and indian ascetics do have something else going for them.
Studies I have read suggest the adult brain is able to generate new cells in the presence of these conditions: being required to learn something new and challenging, physical exercise, and adequate nutrition.
Some of the food ingredients most mentioned in health literature supporting brain health and development are omega oils, especially DHA/EPA.
That said, some arguments are definitely stronger and better researched than others, so it's worth seeking them out.
One good read I discovered by accident is Jonny Bowden's "The 150 Healthiest Foods on Earth." It contains a lot of surprisingly positive stances on foods with poor public image.
D'oh.