Kayla Bundy likes to start her day with a cup of bone broth.

She buys her milk raw, snacks on sardines, eats authentic sourdough bread — no commercial yeasts here — and generally cooks with locally-sourced ingredients. On TikTok, where she has over 500,000 followers, she claims that her diet “fixed” her skin, her hair and her depression, and she sells coaching sessions to help others with their diets.

Bundy, a 27-year-old Christian content creator, might sound like your run-of-the-mill clean-eating type, but she believes her diet to be part of a higher calling. For eight years, she has been a biblical eater, someone who consumes mostly foods mentioned in the Bible. She is part of a niche but dedicated online community trying to tie religious values to dietary needs.

In an era when the Make America Healthy Again movement has pushed for more access to unpasteurized dairy products, stricter boundaries around ultraprocessed foods and new definitions for what counts as healthy food, alternative diets focusing on simpler foods are finding popularity, even when their proponents don’t actively consider themselves part of the MAHA movement. Add to that the growing numbers of GLP-1 users struggling to eat enough protein, and biblical diets can offer an appealing repackaging of certain age-old diet tenets. (The new acting commissioner of the Food and Drug Administration, who assumed his role on Tuesday, is also a vocal champion for policies to remove chemicals from the food supply.)

“I had never really thought to look to the Bible for a recipe book,” Bundy, who grew up in Michigan and now lives in Bali, said, but after cutting out refined sugar made her feel good, she said, she started “studying scripture from that lens of noticing what they are eating.”

She added: “Sin entered into the world through food, and Satan doesn’t stop there. Food, for me, is really like a weapon of how I can fight back.”

Bundy is open about not having nutrition credentials, but she sells a $28 digital guide to biblical superfoods, as well as coaching sessions that start around $700 for a month, she said.

She’s not the only one. Like other health food influencers, the biblical eating proponents with popular accounts often sell products.

Annalies Xaviera, a stay-at-home mom who lives in Gainesville, Ga., and posts biblical eating tips, said her Facebook following had jumped from scant thousands to over 300,000 in just a few weeks this spring. She sells a digital cookbook.

“The Bible says that God appreciates and celebrates small steps of obedience,” said Xaviera, 32, who added that she did not consider herself part of the MAHA movement, but that some of its goals, like removing artificial dyes from foods, aligned with her own preferences.

She said her approach boiled down to eating whole foods and cooking meals at home. She still buys some processed foods, like pasta.

Eating biblically — which can mean strictly sticking to the good book’s ingredients, cooking from scratch or anything in between — is not new. “The Eden Diet,” a 2008 book, offered weight loss and nutrition tips rooted in biblical teachings. The author Jordan Rubin’s 2004 book “The Maker’s Diet” was a best seller (as was his recent book “The Biblio Diet,” coauthored with Josh Axe, a supporter of the MAHA movement, and published last year).

For years, some Christians have also participated in “Daniel fasts,” 21-day fasts based on the Book of Daniel in the Old Testament, in which Daniel consumes only vegetables and water. (There’s also, of course, the long tradition of religious diets, such as keeping kosher or halal, or following a Levitical diet. Jesus, himself, presumably kept kosher.)

On social media, however, biblical eating has appeared to have a resurgence in recent months.

A few years ago, the actor Chris Pratt talked about completing a Daniel fast when he was on “The Late Show With Stephen Colbert.” In January, as part of his partnership with the prayer app Hallow, he posted a video encouraging his followers to use the app to participate in a fast and prayer challenge. The bean-heavy fast had made him quite gassy, he said with a laugh. Other celebrities, including Mark Wahlberg and Patricia Heaton, have been part of similar efforts with the app.

Casper Schimmer, a college student in Amsterdam, said he sold coaching sessions for young, Christian men looking to align their diet and exercise with their faith.

“It’s not like eating healthy only is what makes a godly person,” Schimmer, 20, said. He said he also focused on physical and mental fitness as part of a larger system of “godly habits.” (For example, sabbath as the “original biohack.”)

Jennifer R. Ayres, a religious education professor at Emory University, said the biblical food movement online seemed to show “a focus on personal decision making.” She added that “the more collective and environmental analysis of what’s happening in our food system” is missing from some of the social media dialogue.

Abbie Stasior, a Christian dietitian who lives in Nashville, said much of her work looked, at first, like standard nutrition guidance. She often starts with clients by talking about the importance of breakfast. But then she’ll reference Bible verses, pointing, for example, to a scene in the Book of John in which Jesus eats a balanced breakfast of bread and fish with his disciples. “He’s got carbs and protein,” Stasior, 31, said.

Tying dietary counsel to scripture offers “an extra incentive,” Stasior said.

When it comes to meeting nutrition needs, Dr. Marion Nestle, one of the country’s foremost nutrition policy experts, said that if people on the biblical diet consume ample calories and eat “a wide variety of relatively unprocessed foods,” they are “probably doing just fine.”

She also described how wellness culture had been colliding with policy.

“The thing about wellness is that it’s based on personal experience rather than science — it’s what makes you feel good,” Nestle said, adding: “Diet is about belief. We don’t have a lot of belief systems left in this country. People are desperate for meaning in their lives.”

Xaviera, the stay-at-home mother in Georgia, said she encouraged her followers to pause before eating, describing a person who might be deciding whether to eat a cookie.

“When you’re in a craving,” she said, “have you ever thought to stop and pray?”