Hashimoto's Hair Loss: The Endocrine Work-Up That Belongs Before PRP

T3, the active thyroid hormone, helps drive hair follicles through anagen, the growth phase of the hair cycle. When T3 levels run suboptimal, or its action at the follicle is impaired, follicles enter telogen, the shedding phase, earlier than they should. More follicles shedding at once and fewer growing produces exactly the diffuse pattern patients describe.

In Hashimoto's thyroiditis this can be the presenting complaint. A patient comes in for her hair and leaves with an explanation that has nothing to do with her scalp.

PRP and minoxidil support the follicle directly. Neither one addresses the systemic problem that made the follicle struggle in the first place. That is the reason every hair plan at Palm Beach Cosmetic Medicine is designed and reviewed by Dr. Anna Frisch, MD, PhD, a board-certified endocrinologist, before treatment begins.

Before recommending a topical treatment or an in-office procedure for hair loss, Dr. Frisch works through a comprehensive laboratory evaluation of endocrine and nutritional status in her endocrinology practice. The markers that matter most for hair are TSH, free T3, free T4 and reverse T3, which together assess thyroid function and whether T4 is converting into active T3 properly; TPO and TG antibodies, which confirm whether an autoimmune condition such as Hashimoto's is present; ferritin; vitamin D, with a target range of 50 to 80 ng per mL; and zinc, selenium, biotin and vitamin B12, the cofactors that healthy hair growth depends on.

A normal TSH by itself does not answer the conversion question, which is why patients who have been told their thyroid is fine sometimes still have a thyroid explanation for their hair.

To be clear about where this happens. Palm Beach Cosmetic Medicine is an aesthetic practice and does not routinely perform laboratory testing. Ordering and interpreting this panel is medical care, handled through Dr. Frisch's endocrinology practice or by your own physician. What happens at PBCM is the aesthetic half: reviewing results you already have, and building a treatment plan that accounts for them.

This is the most common miss we see in patients who have already tried topical treatments without result. Standard laboratory ranges may report a ferritin of 25 ng per mL as normal. For hair regrowth, Dr. Frisch looks for ferritin consistently above 70 ng per mL, and levels below that can meaningfully hinder regeneration.

A ferritin that is technically in range and clinically too low will hold hair regrowth back regardless of what is applied to the scalp. It is a number worth knowing before you spend a treatment series working against it.

Iron repletion is recommended only when ferritin measures below 70 ng per mL, and always under physician supervision, because iron overload carries real risk. This is not something to start on your own reading of a lab report.

Hair is one of the first tissues the body deprioritizes when a cofactor runs short, which is also why repletion tends to show up visibly. The limitation of most retail hair products is that they are built around a single marketing ingredient at a dose chosen for the label rather than for the follicle.

Dr. Frisch formulates physician-grade clinical nutraceuticals through VitellaMD to supply the cofactors this protocol depends on. Foundation+ provides a methylated B-complex with zinc, selenium and vitamin D, the cofactors most directly relevant to follicle health, in methylated forms because a meaningful share of patients convert standard B vitamins poorly. Active T3 contains tyrosine, iodine and selenium to support healthy thyroid hormone conversion, the same conversion step that keeps follicles in their growth phase.

Two of those are reasonable to begin without waiting on a full work-up. Iron is the one that requires a number first.

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Clinical nutraceuticals support a physician-directed plan and do not replace prescribed thyroid therapy.

The protocol runs in a deliberate order. Thyroid optimization is foundational, addressing antibody activity, T4 to T3 conversion and appropriate replacement dosing. Cofactor repletion follows, rebalancing iron, zinc, selenium, B-complex and vitamin D toward target with retesting rather than assumption. Adrenal balancing belongs inside the plan, since chronic stress and elevated cortisol drive shedding independently of the thyroid. Those three are medical care delivered in an endocrinology setting.

In-office aesthetic treatment is the fourth move, and it is the half that happens at Palm Beach Cosmetic Medicine in Wellington. PRP hair restoration concentrates the platelets from a small draw of your own blood and delivers them into the scalp at the level of the follicle, where the growth factors they carry support follicle health and the anagen phase. Exosomes and low-level laser therapy are options in the same category.

The clinical logic is straightforward. A follicle short on T3 and starved of iron has limited capacity to act on a growth signal. Correct the deficit and the same treatment does more work.

Every PRP hair plan is designed and reviewed by Dr. Frisch before treatment begins and delivered by PBCM's credentialed care team. Sessions typically run under an hour with topical numbing and little to no downtime, and plans are built as a series rather than a single visit. You do not need a completed endocrine work-up to book a consultation. What the consultation gives you is a clinician who will say honestly whether PRP is the right first move for your pattern of thinning, or whether the panel above should come first.

When the underlying endocrine and nutritional factors are effectively addressed, patients generally begin to see new hair growth within 90 to 120 days. That timeline reflects the hair cycle itself, since follicles pushed into telogen need to complete that phase before new anagen growth becomes visible. Patience is part of the protocol.

When internal correction is combined with in-office treatment, results tend to be more robust, longer lasting, and may require fewer future sessions. Individual results vary, and your timeline depends on the degree of thinning, how long it has been present, and how far your results sit from target at the start.

Bring what you have to your consultation: any thyroid or nutrient labs drawn in the last six to twelve months, a list of current medications and thyroid dosing, and roughly when the shedding started. If the panel has never been run, Dr. Frisch's team can point you toward getting it done before your plan is finalized.

Consultations at Palm Beach Cosmetic Medicine are complimentary. Cosmetic and aesthetic services are elective and self-pay. PRP is not FDA-approved as a treatment for hair loss; the devices used to prepare it are FDA-cleared as medical devices, which is a different thing. Individual results vary, and PRP is not appropriate for every type of hair loss.