Ciara Miller is 30 years old, perpetually on a plane, and deeply committed to one thing most people associate with newborns. The star of Summer House has made bovine colostrum a non-negotiable part of her morning, mixing a scoop of powder into her water before most people have touched their coffee. For Miller, this is not an experiment. It is a practice.

Colostrum is the first milk produced by mammals after birth. It arrives before regular milk, dense with antibodies, proteins, and growth factors, and it has long been regarded as foundational to an infant’s immune development. What is newer is the idea that adults might benefit from it too, and a growing number of wellness-minded consumers are testing that theory.

A supplement built around colostrum

Miller takes Armra Colostrum, a supplement derived from bovine sources and sold as a powder. She favors the blood orange flavor, stirring it into water alongside her morning matcha. The brand positions itself around the ingredient’s naturally occurring bioactives, which proponents say support the gut lining, filter airborne threats, and bolster immunity. Miller says she noticed a difference in how she held up through back-to-back trips and long stretches of disrupted sleep.

The appeal is partly in the simplicity. Rather than a shelf’s worth of single-purpose supplements, colostrum offers a consolidated option. For someone who moves through time zones the way Miller does, consolidation matters.

What the research says about colostrum

The science behind bovine colostrum for adults is still developing, but early findings are encouraging. Studies have pointed to improvements in gut permeability, immune response, and recovery time in athletes. The compound’s immunoglobulins appear to function similarly in adults as they do in newborns, offering passive immune support rather than the active stimulation of a vaccine or traditional immune booster.

Gut health is where colostrum advocates are most vocal. The growth factors in colostrum, including insulin-like growth factor and transforming growth factor, have shown the potential to help repair the gut lining, which can become compromised by stress, poor diet, or illness. A healthier gut supports more efficient digestion and a stronger immune response, given that a significant portion of immune function originates in the gut.

Staying grounded under pressure

Miller’s colostrum habit fits into a broader conversation about self-care in environments that punish inconsistency. Reality television is not known for its accommodating schedules, and the cultural pressure to perform wellness on top of everything else can become its own stressor. Miller navigates this by keeping her routine lean. One supplement, one ritual, one anchor point in a morning that could easily become chaotic.

She also credits family as a stabilizing force in her life. Her mother has a way of cutting through noise and restoring perspective. For Miller, health is not only physical. It is relational too, and the two are not as separate as the supplement industry might suggest.

Why colostrum is finding a broader audience

Colostrum is not new. Its role in early human nutrition has been documented for centuries. What is new is the infrastructure around it. Brands like Armra have spent recent years refining delivery formats and dosing protocols to make bovine colostrum accessible to adults who were never going to source it directly from a farm. The result is a supplement category that feels both ancient and current, a combination that tends to travel well on social media.

Miller’s visibility as a public figure gives the ingredient a new kind of exposure. Whether her audience converts depends on how much they trust her experience over controlled trials, a trade-off that has always defined the wellness supplement market. What she offers, beyond any product endorsement, is a framework. Identify what works, strip everything else away, and actually stick to it.