Start with your goal. See what the research says.
More energy, faster recovery, better sleep, a leaner body. Pick what you care about and see which peptides researchers have studied for it, how strong the evidence is, and where to read the studies yourself.
This is a reading list, not a recommendation. A lot of this research is early, and some of it came up empty. We say so when it did.
30 research topics
Everyday goals
Sleep, energy, recovery, hair and skin research.
Sleep quality
Falling asleep faster, staying asleep, and waking up rested. That is what most people are after.
2 peptides · 2 studies
Hair thinning and hair health
Thinning hair is common, and it can knock your confidence. People want to keep the hair they have and hope for thicker growth.
2 peptides · 3 studies
Skin aging
Firmer skin, fewer fine lines, a healthy glow. Skin is one of the most common reasons people get curious about peptides.
2 peptides · 3 studies
Workout recovery
Less soreness, fewer nagging aches, and being ready for the next session sooner. That is the goal for most active people.
3 peptides · 3 studies
Energy and fatigue
Feeling tired all the time is one of the most common complaints there is. People want steady energy through the day without a crash.
3 peptides · 3 studies
Recovery, joints and muscle
Tendons, joints, muscle, and skin repair.
Tendon / ligament repair
A sore tendon or strained ligament can keep you out of the gym or off the field for months.
2 peptides · 2 studies
Joint injury / arthritis
Achy knees, a stiff hip, an old injury that never quite settled. People want to move without pain and keep doing what they enjoy.
3 peptides · 3 studies
Shoulder / rotator cuff injury
A sore shoulder makes it hard to lift, throw, or even sleep. People with rotator cuff problems look here hoping for a quicker return to normal.
2 peptides · 1 study
Sarcopenia / muscle loss
Losing muscle with age or illness makes everyday things harder, like climbing stairs or carrying groceries.
3 peptides · 5 studies
Wound healing / skin repair
People want cuts, scrapes, and surgical wounds to heal cleanly and skin to recover well.
2 peptides · 4 studies
Weight, metabolism and hormones
Body composition, blood sugar, liver fat, and hormone research.
Insulin resistance / metabolic dysfunction
People looking into insulin resistance usually want steadier blood sugar and a lower risk of diabetes.
4 peptides · 8 studies
Obesity / weight management
Most people here want to lose weight, keep it off, and feel better in their body. This is one of the most heavily studied areas for peptides.
4 peptides · 9 studies
NASH / MASLD (fatty liver)
Fatty liver often has no symptoms, so people who find out they have it want to know how to protect their liver.
2 peptides · 4 studies
HIV-associated lipodystrophy / visceral fat
Some people living with HIV build up stubborn fat deep in the belly. They want to reduce it and protect their long-term health.
1 peptide · 4 studies
Male hypogonadism / low testosterone
Men with low testosterone often want to feel like themselves again, and many want to keep their fertility too.
3 peptides · 5 studies
PCOS / ovarian metabolic
PCOS can bring weight gain, irregular cycles, and blood sugar trouble. Many women want help with the weight and metabolism side of it.
2 peptides · 4 studies
Energy, aging and sexual health
Cellular energy, longevity, and desire research.
Hypoactive sexual desire (HSDD)
Some women lose their interest in sex and find it distressing. They want to feel desire again.
1 peptide · 2 studies
Mitochondrial dysfunction / cellular energy
Mitochondria are the tiny power plants inside your cells. People interested in energy, stamina, and aging well often end up reading about them.
3 peptides · 6 studies
Healthy aging / longevity
Most of us want more good years, with energy and a clear head. Longevity research looks at why cells age and whether that can be slowed.
4 peptides · 7 studies
Brain, mood and nerves
Memory, stress, nerve pain, and brain health research.
Dementia (cognitive decline)
Many people want to protect their memory and thinking as they age, or are looking for answers for a parent or partner.
3 peptides · 6 studies
Alzheimer's disease
An Alzheimer's diagnosis sends families looking for anything that might help.
4 peptides · 6 studies
Parkinson's disease
People living with Parkinson's, and the people who love them, want to know if anything can slow it down.
4 peptides · 8 studies
Stroke / ischemic brain injury
After a stroke, people want to get back as much movement, speech, and independence as they can.
2 peptides · 3 studies
Anxiety / stress
Most people who look this up want to feel calmer and handle stress better. Two peptides, Selank and Semax, have been studied for that.
2 peptides · 4 studies
Neuropathy / nerve pain
Burning, tingling, or numb hands and feet can wear a person down. People hope for less nerve pain and for damaged nerves to recover.
2 peptides · 2 studies
Gut and immune health
Gut lining, inflammation, and immune research.
Crohn's disease / IBD
Living with Crohn's or colitis means flares, pain, and planning life around your gut. People hope for calmer digestion and fewer flares.
3 peptides · 4 studies
Gut inflammation / leaky gut
Bloating, discomfort, and worries about a leaky gut bring a lot of people here. The hope is a calmer, more settled digestive system.
3 peptides · 4 studies
Celiac disease / gluten barrier
People with celiac disease have to avoid gluten completely, and even small slips can make them sick.
1 peptide · 1 study
Chronic hepatitis B
People living with chronic hepatitis B want to keep the virus under control and protect their liver.
1 peptide · 2 studies
Cancer research
Early lab work only. Nothing here is a cancer treatment.
How to read the evidence labels
- Early lab and animal research
- Studied in cells or animals. Nobody knows yet how it works in people.
- Small early studies in people
- A few small human studies. Interesting, far from settled.
- Tested in clinical trials
- Larger controlled trials exist. Read the results, because some trials fail.
- Mixed results
- Studies disagree, or the quality varies a lot.
Search by condition in the PeptIQ app
The app has the same research, plus a tracker for your doses and labs.
For education only. This isn't medical advice, and none of these compounds are approved to treat the conditions listed unless noted. Talk to a licensed clinician before starting anything.