Two dietary planets

I am living on two planets.

One says these things: put fluoride in water systems to benefit children's teeth, with no adverse effects; eating cholesterol is bad and will raise your cholesterol level and raise risk of heart disease; polyunsaturated fats are good for you; it's ok to drink a lot of soda pop; saturated fats are bad for you, including coconut oil; canola oil is good for you; high carb, low fat diets will result in weight loss; the government's food pyramid is a good guide for healthy eating.

The other planet says: don't put fluoride in water systems because it will damage thyroid function; eating cholesterol is not bad because your body produces and uses it apart from dietary intake; polyunsaturated fats are not good for you, olive oil is better; it's not ok to drink a lot of soda pop because high fructose corn syrup gives a major assist to some diseases including diabetes (so why is the government subsidizing corn growers?); saturated fats are not the artery cloggers they are said to be (see cholesterol above), especially coconut oil; low fat/high carb diets are responsible for the obesity epidemic in the US; the government's food pyramid is strongly influenced by food manufacturers and will encourage poor health.

Then we have Michael Pollan, who advocates for eating and enjoying food as food and not as medical delivery systems.

For more than a year I have been reading about what happens to people when they stuff various foods and food-like products into their mouths. The nutrient of this decade seems to be fat. Food science and people don't agree all the time.

It all began with my discovery that coconut oil is a good fat even though it is saturated. The more I read, the more I found. It's a strange world of two planets.