Nutritionist in San Diego

Certified Nutritionist in San Diego. One-on-one nutrition coaching out of a
private studio in Bankers Hill — built on your actual numbers, not a generic meal plan. 22+
years working with athletes, executives, and people who simply want to feel better.

Book a complimentary consultation or call
(619) 284-2510. Prefer to start with data? Get your
free BMR & macros report first — it takes
about a minute and it is yours whether or not we ever work together.

What a Nutritionist Actually Does

Most people arrive having already tried the obvious things. They have counted calories,
cut carbs, bought the supplements, and something still is not working — energy is flat,
weight will not move, or the diet that worked at 35 stopped working at 50.

The job is to find out why, specifically, for you. That means starting from measurements
rather than assumptions: what you actually eat in a normal week, what your body composition
is doing over time, how you sleep, how you recover, and where your intake is genuinely short.
Then we build something you can hold for months — not a reset, not a challenge, not a
14-day plan you abandon in week three.

Nutrition here is not sold as a separate product bolted onto training. The same person
writes your program and your nutrition, which means the two stop contradicting each other.
That is the part most people are missing.

Nutrition Services in San Diego

Nutrition Consultation

A single focused session to answer a specific question — what to eat around training, why
your energy crashes at 3pm, whether a supplement is worth the money, how to eat while
travelling. Bring the problem, leave with a plan.

Nutrition Coaching

Ongoing work. We set targets, track what actually happens, and adjust every few weeks based
on real data rather than how the week felt. This is the option for body-composition change,
because that takes months and needs someone watching the trend.

Macro & Body Composition Coaching

Your calorie and macronutrient targets calculated from your measurements, then adjusted as
your weight, girths, and performance respond. Most people are either under-eating protein or
badly over-estimating intake; measurement settles which.

Meal Planning & Practical Structure

Not a printed menu you will not follow. A repeatable structure — what a normal day looks
like, what to do when you eat out, what to keep in the house — built around the food you
already like.

Weight Management

Fat loss without losing muscle, which is the part crash diets get wrong. Protein and
resistance training protect lean mass while you are in a deficit, so the weight you lose is
the weight you meant to lose.

Metabolic & Microbiome Testing

When the basics are already in place and results still do not follow, testing can show what
guessing cannot. We offer an at-home organic-acids and metabolomics urine panel, and
microbiome testing, with results interpreted in plain English and turned into a specific plan.
See metabolomics testing for
what is involved.

Supplement Consultation

An honest audit of what you are taking. Most people are paying for things that do nothing
for them and missing one or two that would help. We carry practitioner-grade Designs for
Health products, but the first job is usually removing bottles, not adding them.

Nutritionist vs. Registered Dietitian — Which Do You Need?

Worth being straight about, because the titles are not interchangeable.

If your goal is body composition, energy, performance, or building habits that hold — with
nutrition and training designed by the same person — that is exactly what we do here.

If you need insurance-billed medical nutrition therapy for a diagnosed disease — kidney
disease, eating-disorder treatment, diabetes management under a physician’s direction — a
registered dietitian or a physician referral is the right fit, not us. We will tell
you that rather than take the work. If something in your history warrants medical attention,
we will say so and point you to your doctor.

Credentials You Can Trust

  • Certified Nutritionist (College of Naturopathy)
  • Certified Personal Trainer and Strength & Conditioning Coach
  • CHEK Practitioner
  • Feldenkrais-trained somatic movement educator
  • 22+ years coaching in San Diego, in the same studio since 2010

Nutrition and training are handled by the same coach — Martin Alonzo — so nothing gets lost
between two people who never speak to each other.

Frequently Asked Questions

How much does nutrition coaching in San Diego cost?

It depends on whether you want a one-off consultation or ongoing coaching, and whether it
is combined with training. Start with the free BMR and macros report, then a complimentary
consultation where we scope what you actually need and what it costs. No obligation.

Do I have to train with you to get nutrition coaching?

No. Nutrition coaching is available on its own. That said, results are usually faster when
nutrition and training are aligned, because the two are solving the same problem from
different directions.

How long before I see results?

Energy and digestion often shift within two to three weeks. Body-composition change is
measurable over roughly 6–12 weeks when nutrition and training are aligned and you are
consistent. Anyone promising faster than that is selling water weight.

Do you do meal plans?

Not the rigid printed kind, because almost nobody follows them past a fortnight. You get a
structure and targets that fit how you actually eat, which is what survives a real week.

Where are you located?

440 Upas Street, Unit 104, San Diego, CA 92103 — a private studio in Bankers Hill, minutes
from Hillcrest, Mission Hills, Little Italy, North Park, and Balboa Park.

Start With Your Numbers — Free

Get your free BMR & macros report —
your calorie, protein, carbohydrate, and fat targets calculated from your own measurements in
about a minute. Then book a complimentary
consultation or call (619) 284-2510 and we will go through
what the numbers mean for you.

Explore More

Nutrition coaching at Performance Training Center is a wellness and performance service.
We do not diagnose, treat, cure, or prevent any disease.