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  2. Peptides: The Science, Uses & Safety | Dr. Abud Bakri
Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab · Jun 1, 2026

A masterclass on peptides with Dr. Abud Bakri. Explore BPC-157 for repair, GLP-1s for weight loss, and the "trinity stack" for peak health.

The Peptide Pinealon (EDR) Originates from Brain Cortex, Not the Pineal Gland

Despite its name suggesting a link to the pineal gland, the tripeptide Pinealon (EDR) was actually isolated from a brain cortex extract called Cortexin. It was developed by Soviet researchers not for sleep, but as an anti-stress and cognitive performance compound for soldiers and astronauts.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

Elite Fitness Transformations Often Rely on a "Trinity Stack" of Peptides

High-profile individuals frequently combine GLP-1 agonists (for insulin sensitivity), growth hormone secretagogues, and androgen therapies (like TRT) to rapidly lose fat and gain muscle. This stack is behind many dramatic physical changes seen in CEOs and celebrities.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

The Thymus Gland Regrows During Breastfeeding After Shrinking in Pregnancy

The thymus gland involutes (shrinks) during pregnancy, a strategic move to prevent the mother's immune system from attacking the fetus. This process reverses postpartum; during breastfeeding, under the influence of growth hormone and prolactin, the thymus regenerates, restoring immune function.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

A Key Clinical Distinction for Peptides Is Whether They Have Known Receptors

Peptides are clinically categorized by whether they have identified receptors. Compounds like GLP-1s have known receptors, leading to strong, predictable effects. Others, like BPC-157, lack a clear target, resulting in more diffuse, less understood mechanisms of action.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

Nearly All Peptides in the U.S. Originate from Chinese-Made Active Ingredients

Despite claims of "American-made" peptides, the raw Active Pharmaceutical Ingredient (API) for compounds sold by compounding pharmacies and research sites is almost exclusively synthesized in China. Finishing, packaging, and quality control may occur domestically, but the core ingredient is imported.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

The Peptide Epitalon Aids DNA Repair, Showing Promise for Retinitis Pigmentosa

Epitalon, a peptide from the pineal gland, has shown significant effects in animal studies on retinal health. It appears to combat the neurodegeneration seen in diseases like retinitis pigmentosa and glaucoma by supporting DNA repair machinery in photoreceptor cells, suggesting a novel therapeutic pathway.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

Some Clinicians Profit Directly by Marking Up Compounded Peptides to Patients

Unlike standard prescriptions, where doctors do not profit from a drug's sale, a different model exists for compounded medications. Some clinicians purchase peptides from a pharmacy at one price and then sell them to patients at a substantial markup, creating a direct financial incentive.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

Peptide BPC-157 Research Was Inspired by Pavlov Selling Dog Gastric Juices for Healing

Scientist Ivan Pavlov funded research by selling dog gastric juices as a medicinal elixir for GI distress. This historical use inspired Croatian researchers in the 1990s to investigate these juices, eventually leading to the isolation of the body protective compound (BPC) and its active fragment, BPC-157.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

The Thymus Peptide Thymulin Potentiates Other Hormones, Boosting Testosterone Response

Thymulin, a zinc-dependent peptide from the thymus, does more than modulate immunity. Animal models show it sensitizes end-organs to hormonal signals. For example, administering Thymulin with HCG results in significantly more testosterone production than HCG alone, suggesting it acts as a hormonal amplifier.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

The Gut Peptide BPC-157 Can Blunt Stimulant Effects and May Cause Anhedonia

Beyond its healing properties, BPC-157 shows surprising neuropsychiatric effects. Users anecdotally report it blunts the effectiveness of stimulants like Adderall. Some online discussions also link its use to anhedonia (a reduced ability to feel pleasure), suggesting it modulates dopaminergic signaling.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

The Peptide BPC-157 Can Worsen Skin Angiomas Due to Its Angiogenic Properties

A known mechanism of BPC-157 is promoting angiogenesis (new blood vessel growth), key to its healing effects. However, this can have cosmetic side effects. Anecdotal reports indicate that taking BPC-157 can make existing spider angiomas on the face more prominent.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

Growth Hormone Impairs Insulin Sensitivity, a Counterintuitive Side Effect

While sought for its muscle-building and anti-aging effects, growth hormone has a significant downside: it can induce insulin insensitivity, causing A1c levels to rise. This is a well-understood trade-off in the bodybuilding community, where you must get lean enough to handle taking growth hormone.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

Lymphocyte-to-Monocyte Ratio from a CBC Test Is an Overlooked Immune Health Proxy

A simple, low-cost Complete Blood Count (CBC) test contains a valuable metric for immune health: the lymphocyte-to-monocyte ratio. A low ratio is consistently associated with poorer outcomes across numerous diseases, from cancer to cardiovascular disease, yet this data point is almost universally ignored by clinicians.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago

The Sleep Peptide Pinealon (EDR) May Function Better as a Pre-Workout Nootropic

While many biohackers use Pinealon (EDR) for its effects on REM sleep, its original Soviet research points to a different application. Studies on athletes showed it helped them maintain cognitive performance on tests even after being maximally exhausted from training, suggesting its power as a nootropic for high-stress situations.

Peptides: The Science, Uses & Safety | Dr. Abud Bakri thumbnail

Peptides: The Science, Uses & Safety | Dr. Abud Bakri

Huberman Lab·16 hours ago