For several years now, the ketogenic diet has been all the rage in Hollywood and Middle America alike.

If you're unfamiliar, the keto diet, as it's commonly known, is a low-carb, high-fat plan that promises rapid results and major weight loss.

Keto has gained many high-profile enthusiasts over the years, including adult film star-turned lifestyle guru Jenna Jameson.

Jenna lost a ton of weight by adhering to a strict keto regiment, and she credits the diet with helping her to turn her life around.

Jameson struggled with addiction throughout the Nineties.

After getting sober, she found she went from dangerously underweight (down to 76 pounds at one point) to somewhat overweight (her assessment, not ours).

In recent years, Jenna has been one of the biggest defenders of the controversial diet plan, even launching her own line of keto diet foods.

But now, it seems she may be ready to say goodbye to the diet that helped launch her second career.

Earlier this week, Jenna posted the pic below, which she claims is a document of her recent weight gain.

"Confession. I’ve gained 20 pounds. Ugh. I decided to take a break from #keto and live my best carby life," she captioned the pic.

"The weight came back fast and furious. I know a lot of people are quitting keto because it’s hard to maintain and after a year and a half I concur," she added.

"Not sure if I’m going to go back full force or just calorie count. What are your thoughts? Love you guys!

Since Jenna attributes her weight gain to quitting keto, this might be viewed by some as an endorsement of the diet.

But one of the biggest criticisms of keto is that it's incredibly difficult to maintain for long periods of time.

Virtually all of your go-to quick snacks or "lazy meals" -- chips, cereal, pasta, sandwiches -- are largely carb-based.

Keto, on the other hand, requires a lot of shopping and a lot of cooking.

Many people who live busy lives find that it's a difficult workload to maintain for more than a few months.

So in saying that she found the diet too restrictive, Jenna might actually be preparing to cut ties with the keto community she's been a part of for so long.

Of course, the consensus from fans is that she looks perfectly healthy and much younger than her 45 years, so whatever she's doing, it seems to be working.

"Unpopular opinion, but I'm getting older and I've earned this big ass," wrote one fan.

"Sometimes it's nice just being a bit pudgy and not worrying about food. I say that and my ass looks like a relief map of the Moon, so I dunno. Either way, you look great."

We couldn't have said it better ourselves.