[kbelder]

Sometimes, though, an extreme diet to lose weight can allow you to make some lifestyle changes (such as exercising regularly) that do have lasting impacts. Being significantly overweight can really make physical activity difficult and demoralizing.

I agree that it they often aren't sustainable and need to transition into a more sensible long-term diet.

[lawlessone]

We really need multiple words for diet.

It means at least two different things:

It can refer to specific planned period of eating a certain way to achieve a certain end.

e.g. Atkins diet(please look up how he died before considering this), fodmap diet , low GI diet, potato diet

It can also refer to the normal way a particular person at particular place and time in history eats.

e.g The Roman diet, Celtic diet, American Diet, French diet, Pandas diet, Neanderthal diet ,Vegan/Vegetarian diets, Kosher/Halal diets

[dminor]

Atkins died of a head injury when he slipped on some ice, FYI

[bscphil]

He also had congestive heart failure and his arteries were 30-40% blocked a year before his death. After he fell, he died during surgery to remove a blood clot in his brain. It's hard to say conclusively what caused his fall and ultimately his death, but we do know for a fact that he had heart problems.

I don't believe this matters either way, though. You shouldn't be basing your understanding of what a healthy diet looks like on the outcome for one individual. Experts in the field of human health do not believe that Atkins' diet was healthy, and that should suffice (though of course there are plenty of other unhealthy diets, some of which have problems that Atkins avoids).

[dminor]

I'm merely pointing out that internet rumors about his death are false.

I have no idea if he followed his own diet or if his diet is healthy or not, but if you have references to studies this thread is sorely lacking.

[isk517]

I would imagine extreme diets are for viable for those that require extreme weight lose. Someone looking to lose 100+lbs would be able to use it to lose enough weight to become active again and start to make lifestyle changes that will support long term weight management. People looking to drop 10lbs though are very likely to gain it back once they start eating like a normal human again.