3-8%
Per decade
after age 30
after age 30
Muscle mass
Muscle mass drops roughly 3 to 8% every decade after 30, and the loss speeds up after 60.
Volpi, Nazemi & Fujita · Current Opinion in Clinical Nutrition & Metabolic Care, 2004Free download · The Peptide Handbook
The peptide guide
a doctor would
actually hand you.
38 therapies, broken down one at a time. What each one does, how it works in your body, and who it is right for. No hype, no forum threads, no vials of unknown origin.
Free download, no card required.
Everything inside is medical grade and prescription only.
The Peptide
Handbook
FreeGuide
Find Out How Peptides Help With
Fat Loss, Muscle Building, Anti-Aging, Gut Health, Sports Medicine, Recovery, Sleep, Brain Health, and Sexual Health.
Get The Guide
503A Certified Pharmacy
Medical Grade, Not Research Grade
No Reconstitution Needed, Ready To Inject
Dosage Is Prescribed, No Guesswork Necessary
All 50 States
The science of aging
Aging runs on a schedule. Here is what the research measured.
Most of it happens too slowly to notice year to year. Over decades, it adds up. Every figure here comes from published, peer reviewed research.
These are population averages, not a diagnosis. A provider looks at you.
14%
Per decade
after age 30
after age 30
Growth hormone
Growth hormone secretion falls by about 14% per decade after 30, mostly because each pulse gets smaller.
Endotext, Physiology of the Hypothalamic-Pituitary Axis in the Elderly · NIH National Library of Medicine1%
Per year
of adult life
of adult life
Skin collagen
Total skin collagen declines about 1% a year through adulthood, in men and women alike.
Shuster, Black & McVitie · British Journal of Dermatology, 197525
Base pairs
lost per year
lost per year
Telomere length
Telomeres, the protective caps on your chromosomes, shorten by roughly 25 base pairs every year in adults.
Müezzinler, Zaineddin & Brenner · Ageing Research Reviews, 2013 · review of 129 studies8%
Per decade
of adulthood
of adulthood
Cellular energy
Muscle mitochondria produce about 8% less ATP, your cells' fuel, with each decade of adult life.
Short et al., Mayo Clinic · PNAS, 2005 · 146 adults aged 18 to 898%
Per decade
in men and women
in men and women
Aerobic capacity
VO2 max, your body's ceiling for using oxygen during exercise, drops about 8% per decade in both men and women.
Short et al., Mayo Clinic · PNAS, 2005 · 146 adults aged 18 to 895%
Per decade
after age 40
after age 40
Brain volume
Brain volume declines around 5% per decade after 40, and the rate may climb further after 70.
Peters · Postgraduate Medical Journal, 200610%
Per decade
from early adulthood
from early adulthood
Dopamine
Dopamine levels fall by around 10% per decade from early adulthood, linked to slower thinking and movement.
Peters · Postgraduate Medical Journal, 2006
What is inside
Every therapy we offer, explained in plain language.
Every entry covers what it is, how it works, and what people come to us for. Same structure every time, so you can compare them honestly instead of guessing.
22
Peptide therapies
From the well known repair and growth hormone peptides to the newer metabolic ones now in trials.
09
Curated stacks
Combinations our providers actually use together, and the reason each pairing works.
07
Non-peptide therapies
Injectables and compounds that sit alongside peptides in a protocol.
Fat loss
Muscle building
Anti-aging
Gut health
Sports medicine
Recovery
Sleep
Brain health
Sexual health
Why this matters
You are putting this in your body with a needle.
Peptides are sold all over the internet to anyone with a card. The compound in the vial might even be the right one. Everything around it is the difference.
Prescription program
Manna Life
Gray market
Research vials
Where it comes from
A 503A certified pharmacy, licensed and inspected. USP compliant with ISO clean room, standards a research supplier is never held to.
Where it comes from
A checkout page. Often an unlicensed facility overseas that no regulator has ever walked through.
What is verified
Potency, purity, sterility, and endotoxin levels, tested and tied to a lot number that exists in a record. Full documentation and traceability, start to finish.
What is verified
A certificate of analysis supplied by the seller, for a batch that may have nothing to do with the box on your counter.
What is on the vial
Your name, the drug, the strength, the beyond use date, and the lot. Prepared for a human being. You.
What is on the vial
“For research use only. Not for human consumption.” That sentence is not a formality. It is the entire legal position.
Who sets the dose
A licensed provider who has read your history, your medications, and your contraindications first.
Who sets the dose
A forum post, a video, or a chart written by the person selling it to you.
The protocol
Start low, one compound at a time, adjust on follow up, so you can actually tell what is working and what is not. Comprehensive quality assurance behind every step.
The protocol
Three compounds at once because the stack looked good, then no way to know which one caused the reaction.
When something goes wrong
There is a chart, a provider to call, an adverse event process, and a lot number that can be traced or recalled. Licensed nationwide.
When something goes wrong
No chart, no provider, no recall, and no one who is accountable for what was in the vial.
Sterility is not a technicality when the route is an injection. Contaminants, bacterial endotoxins, or simply the wrong compound do not get filtered on the way in. They go into tissue and bloodstream directly. Oral supplements are forgiving about this in a way that injectables are not.
Talk to a provider
Where it comes from
Medical grade. Not research grade.
The peptides in this guide are not gray market vials sold under a research label. Here is what that means in practice.
503A certified pharmacy
Every therapy we prescribe is compounded by a 503A certified pharmacy under state and federal oversight, with quality and purity standards a research supplier is not held to.
- USP Compliant with ISO Clean Room
Dispensed for human use
No "for research use only" labels and no guessing what is in the vial. What arrives is prepared and labeled for a patient, and that patient is you.
Written by a licensed provider
A Manna Life provider reviews your goals and your history, writes the prescription if it is appropriate, and stays with you for dosing and follow up.
From Dr. Turner
Dr. Turner quote, verbatim. One to three sentences in his own words.
Dr. Michael Turner, MDWhere he said it, e.g. Substack, 2026
Second Dr. Turner quote, verbatim, from a source you can point to.
Dr. Michael Turner, MDWhere he said it
Two ways to start
Read first, or talk to a provider first.
The handbook is free. The consultation is where a licensed provider decides what is right for you, and it is the only way to begin therapy with us.
Option one
Download the free guide
The full Peptide Handbook, sent to your inbox as a PDF. Yours to keep and bring to any provider.
Option two
Book a peptide consultation
A visit with a licensed Manna Life provider to review your goals and your history, and to determine whether any of this is right for you. Every therapy in the handbook is prescription only.
- Meet your providerBring your goals and your history. Your provider decides what, if anything, is appropriate for you.
- Rx delivered to your doorIf a prescription is appropriate, it ships straight to your home.
- Ongoing support in your portalFollow ups, dosage adjustments, and messages with your care team.
We see patients in all 50 states.
Peptide Users
In their own words.
“BPC-157 healed my shoulder injury faster than anything I’ve ever tried.”
“GHK-Cu has completely transformed my skin. I look 10 years younger!”
“TB-500 got me back to running after a tendon injury I thought would end my career.”
“Epithalon has improved my sleep quality dramatically. I feel rejuvenated every morning.”
“CJC/Ipamorelin combo has helped me build more muscle at 50 than I had at 30.”
“Selank eliminated my anxiety without any brain fog or side effects.”
“DSIP gave me the deepest sleep I’ve had in years. Game changer for recovery.”
“Semax boosted my focus and mental clarity better than any nootropic I’ve tried.”