Anti-aging, the medical version. Protecting healthspan as you age.
Most anti-aging marketing sells the next miracle. The medical version is narrower — catch metabolic disease before it shows up as cardiovascular events, diabetes, or cancer ten years down the road. Dr. Castellano runs the panel that catches the early signal — insulin resistance, hormone decline, inflammation — then builds an anti-aging plan around what the labs actually say to correct. The boring basics, sized to your numbers, that compound over decades.
Garden Grove · Mon–Fri 9 AM – 5 PM
The honest medical scope.
- Lab-driven hormone optimization (TRT for men, HRT for women)
- Metabolic markers — insulin sensitivity, lipid panel, body composition
- Micronutrient correction — D, B12, iron, magnesium, the boring load-bearing list
- Sleep, training, nutrition, alcohol guidance
- Age-appropriate cancer-screening cadence
What we don’t sell here.
- Stem cell IVs (regulatory and evidence picture not established)
- “Look 10 years younger” injectables — refer to a cosmetic dermatologist
- $5,000 supplement stacks of unproven longevity products
- Miracle peptide protocols outside current FDA guidance
- Anything where the marketing margin is bigger than the evidence
An honest anti-aging plan rests on four things.
Hormone optimization
TRT for men, bioidentical HRT for women. Anchored in lab values, not symptom-only treatment. For appropriately selected patients, hormone replacement can be one of the central interventions in an anti-aging plan, alongside metabolic correction, screening, sleep, training, and nutrition.
Metabolic correction
Insulin sensitivity, lipid panel, body composition, inflammatory markers (hs-CRP). Quietly the most important determinants of how the next twenty years go.
Micronutrient correction
Vitamin D, B12, iron / ferritin, magnesium. Boring but load-bearing. Most American adults are deficient in at least one. Cheap to fix when you actually check for it.
Lifestyle scaffolding
Sleep, training cadence, alcohol, daily movement, stress recovery. Unsexy basics that compound over decades and outperform any supplement stack.
The labs that anchor everything else.
Same panel that anchors TRT and weight-loss workups. Anti-aging adds a few markers (estradiol/progesterone for women, ApoB and free T3 where indicated) to round out the picture.
- Total + free testosterone (men)
- Estradiol, progesterone, FSH, LH (women)
- TSH + free T4 + free T3
- Fasting insulin + HbA1c
- Comprehensive metabolic panel
- Lipid panel (incl. ApoB where indicated)
- Vitamin D, B12, ferritin
- Hs-CRP (inflammation marker)
The patients who age well aren’t the ones doing the most.
After three decades of practicing in the same Orange County market, the pattern is clear. The patients who arrive in their seventies still strong, alert, and engaged with life are not the ones who chased the trendiest protocol or the most exotic supplement stack. They’re the ones who got the basics checked regularly and corrected what the labs said needed correcting.
Hormones in range. Metabolic markers in range. Vitamin D in range. Sleep prioritized. Training consistent. Drinking moderate. Cancer screening on schedule. Boring. It works.
“We age because our hormones decline; our hormones don’t decline because we age.”
For the science behind why these four pillars actually move the needle, read the cornerstone post — Why We Age: The Six Theories That Converge on Inflammation →
The other services aren’t separate practices. They’re facets of the anti-aging plan.
TRT / HRT
The load-bearing intervention for most patients. Foundation, not a side service.
Read the TRT page →Medical weight loss
Metabolic correction is the second pillar. Hormone optimization handles part of the weight conversation invisibly.
Read the weight-loss page →Hair loss
DHT, ferritin, thyroid evaluation overlaps with anti-aging panel. Often shared visit.
Read the hair-loss page →Peptide therapy
Occasional adjunct when the clinical picture supports it — within current FDA guidance.
Read the peptides page →
Anti-aging boards that actually mean something.
UC Irvine School of Medicine ('96). Board-certified in Family Medicine (ABFM). Advanced certifications in Anti-Aging and Regenerative Medicine (ABAARM) and a Fellowship in Anti-Aging and Regenerative Medicine — the two credentials that specifically apply to this lane of practice.
Practicing in Orange County since 1999. The anti-aging conversation here is grounded in three decades of watching the same patient population age, what worked, what didn’t, and what the trends got wrong.
The questions patients actually ask before they call.
Don’t see yours? Call the office and ask Dr. Castellano directly.
Is anti-aging medicine the same as hormone replacement?
Do you do Botox or fillers?
Do you do stem cell IVs?
What about NAD+ IV drips?
Can women come in for anti-aging care?
How often do I need labs?
What does this cost?
Real patients. Real reviews. Verified by Google.
Anti-aging care across the OC corridor.
The clinic sits on S Euclid St in Garden Grove — easy reach from Anaheim, Westminster, Santa Ana, and the wider OC corridor. Free on-site parking.
We see patients from Garden Grove, Anaheim, Westminster, Stanton, Santa Ana, Cypress, Buena Park, Orange, Fountain Valley, Huntington Beach, Costa Mesa, Tustin, Fullerton, Long Beach, Los Angeles, and across Orange County.
Book the 1-hour consult.
Bring your bloodwork or get fresh labs ordered up front. The anti-aging conversation only makes sense with the actual numbers in front of us.
Mon–Fri 9 AM – 5 PM
Calling after hours? Leave a message — we’ll get back to you the next business day.