Is the Beyoncé Greenprint diet bad for you?

OK, ladies, now let’s get in starvation.

Greenprint, the strict vegan eating plan beloved by Beyoncé, is moving up in the charts. “The Greenprint: Plant-Based Diet, Best Body, Better World,” the book released in 2018 by Queen Bey’s longtime trainer and nutritionist, Marco Borges, had sold almost 42,000 copies by last month, according to BookScan. There are nearly 11,000 images on Instagram tagged #greenprint and #greenprintproject, and, in July, Beyoncé and Borges started hawking a companion online tool called the 22 Days Nutrition Meal Planner.

The pop star and other fans of the regimen — which doesn’t allow animal products, processed foods, added sugars or oils — rave about how it helps them lose weight quickly, improves sleep and makes their skin glow.

But now, some nutrition experts are warning that Greenprint is just another crash-diet craze that places too many restrictions on the body and won’t lead to lasting results.

“Fad diets are risky and hard to follow long term,” Midtown nutritionist Lara Metz tells The Post. “It’s not teaching an overall healthy lifestyle.”

Rosie Acosta, 36, a yoga and meditation teacher from LA, says she got off to a rough start on the Greenprint diet.

“I was really sad for two weeks,” says the Beyoncé fan, who had been considering going vegan when she watched the performer’s Netflix documentary “Homecoming,” which shines a spotlight on the diet. Acosta was inspired to finally take on the 22 Days Nutrition plan — which refers to the amount of time some believe is needed to form a new habit — after watching the famous mother of three prepare for her Coachella extravaganza. “[I] thought, ‘She just had twins and was able to do this. I have no kids, and I can be making better choices.’ ”

Initially, she “basically lived off the TLT” — that’s a tempeh, lettuce and tomato sandwich. But in the eight weeks that she’s been doing it, she’s lost 8 pounds, and she says she prefers it to other diets she’s tried, despite its challenges. “I enjoy the process of giving my nourishment a lot of attention,” says Acosta, who plans to stay on the plan for a year. (Beyoncé did it for 44 days.)

Acosta says she’s seen a big difference in her energy levels already. “It’s easier for me to wake up in the morning and not feel as tired or sore.”

Greenprint doesn’t specify a calorie limit, but a typical day’s worth of meals on Beyoncé’s Meal Planner amounts to 1,400 calories — significantly less than the 2,000 daily-calorie average the USDA recommends for adult women. Midtown-based nutritionist Lauren Cadillac believes such a restrictive approach will come back to haunt Greenprinters.

“It’s a vicious cycle. Diets [like this one] starve your body of calories, so your body starts slowing its metabolism and holds onto fat. It’s just survival,” Cadillac says. “I don’t think it’s healthy.”

Nutritionist Metz notes that the plan can be time consuming: Dinners can take up to 50 minutes to prepare, and the need for fresh ingredients means a few trips to the produce aisle per week. For non-celebs, she says, that’s not always feasible. “Not everyone has the support that Beyoncé does,” she says. “Can it be long term? I don’t think so.”

Nadia Anac, a Tampa, Fla.-based realtor, felt that strain.

“You have to plan ahead to buy everything for that week, especially for lunch,” says the 40-year-old. “I work and it’s not always possible to prepare a fresh meal, so it was hard not to be tempted while I was out.”

‘Fad diets are risky and hard to follow long term. It’s not teaching an overall healthy lifestyle.’

Still, she says, it did the trick. “I did 22 days plus some more, and it definitely works,” says Anac, who first tried the diet in 2016 after hearing Borges talk about it on a Miami radio show. Greenprint-approved green smoothies, raw walnut tacos — where lettuce leaves sub for tortillas and the filling is made from spiced nuts — and pizza with a faux-cheese sauce and a cornmeal crust were staples for Anac on the plan. She lost 12 pounds in about a month. “I was the thinnest I’ve been in my adult life, and I felt great.”

Acosta agrees that the lifestyle isn’t easy. She estimates she spends five hours a week prepping meals, not including time grocery shopping, and says it can be hard to find restaurants that she can eat at with friends.

Still, she found it less challenging than when she did Whole30, which allows for meats but bans lots of Greenprint-approved foods, such as legumes and whole grains.

“For some reason this felt a lot easier,” she says. “Maybe it’s because I love Beyoncé.”