I've been saying that I think low-fat diets are among the best diets and that low-carb/Paleo and any low-calorie diet are the worst diets and US News and their panel of experts seems to agree with me:
"U.S. News evaluated and ranked the 32 diets below with input from a panel of health experts. To be top-rated, a diet had to be relatively easy to follow, nutritious, safe and effective for weight loss and against diabetes and heart disease."
#1 DASH Diet
Type: Balanced.
Resembles: TLC Diet, Mediterranean Diet, Mayo Clinic Diet, Vegetarian Diet
#2 TLC Diet
Type: Low-fat.
Resembles: Ornish Diet, DASH Diet
#3 Mediterranean Diet (tied)
Type: Balanced.
Resembles: DASH Diet, Mayo Clinic Diet, Vegetarian Diet
#9 Ornish Diet
Type: Low-fat.
Resembles: TLC Diet, DASH Diet, Volumetrics, Vegetarian Diet, Vegan Diet
#22 Zone Diet (tied)
Type: Balanced.
Resembles: Glycemic-Index Diet, Nutrisystem
#29 Atkins (tied)
Type: Low-carb.
Resembles: South Beach Diet, Eco-Atkins, Paleo Diet
#29 Raw Food Diet (tied)
Type: Low-calorie.
Resembles: Vegan Diet, Vegetarian Diet
#31 Paleo Diet (tied)
Type: Low-carb.
Resembles: Atkins, Eco-Atkins
http://health.usnews.com/best-diet/best-overall-diets
I've also said that the only diet worse than Paleo (besides any low-calorie diet) is the S.A.D. diet, but looking back I ate S.A.D. most of my life and never really had too many health problems unlike years on low-carb/Paleo-style diets which got me really sick and that's how I came here, so for me at least, Paleo is even worse than the S.A.D. diet!
They rated the Raw Food diet very low too (which many people here mistakenly think I follow) and that probably has a lot to do with it being very difficult to follow, but I included it in this post because US News categorized it as "low-calorie" and I've been saying the biggest reason why people here who had followed a mostly vegan or raw food diet and got sick failed on them because they were simply not eating enough on these diets--i.e. calorie-restriction.
All this supports what I had just posted the other week about people's diet habits at this forum:
Biggest diet culprits: under-eating & low-carb