No single food, separate from the overall quality and pattern of diet, exerts a major health effect. 

Only 10% of people have problems with tolerating gluten. 

About one percent of people have celiac disease, and perhaps 10 percent have lesser forms of sensitivity, which may be related to other factors, like a disrupted microbiome. 

The best vegetables are likely to be fresh and locally sourced, but flash frozen is nearly as good (as freezing delays aging). Those “fresh” vegetables that spend a long time in storage or transit are probably the least nutritious.

Highly processed grains and added sugar are bad because they’ve been robbed of nutrients, they raise insulin levels, and they’re often high in added fats. But most plant foods are mostly carbohydrates: vegetables, fruits, whole grains, beans, lentils, nuts, and s...

It's much easier to outeat running than to outrun all of the tempting calories that modern marketing encourages us to cram in. 

Both diet and exercise are important to health, and exercise is important in weight maintenance. But to lose weight, the preferential focus needs to be on ...

...are closer to junk food than they are to real food. 

Many power bars have nutritional profiles similar to Snickers.

Because they are just one ingredient: avocado, lentils, blueberries, broccoli, almonds, etc.

The “best” diet is a theme: an emphasis on vegetables, fruits, whole grains, beans, lentils, nuts, seeds, and plain water for thirst. 

That can be with or without seafood; with or without dairy; with or without eggs; with or without some meat; high or low in total fat.