Research shows that squalene, a natural compound from shark liver oil, significantly reduced cancer-related muscle and fat loss in mice with colon cancer tumors. According to Gram Research analysis of this 2026 study, mice receiving squalene supplements lost less weight, maintained stronger muscles, and had smaller tumors than untreated mice. The compound works by reducing inflammation and helping muscles rebuild instead of break down. While these animal results are promising, human studies are needed before squalene can be recommended for cancer patients.
Cancer often causes patients to lose dangerous amounts of muscle and fat, a condition called cancer cachexia that makes them weaker and sicker. According to Gram Research analysis, scientists tested a natural substance called squalene (found in shark liver oil) on mice with cancer tumors. The mice that received squalene lost less weight, kept more muscle strength, and had smaller tumors than mice that didn’t get it. The researchers discovered that squalene works by reducing inflammation and helping the body build muscle instead of breaking it down. While this is promising early research in animals, it suggests squalene might one day help cancer patients maintain their strength during treatment.
Key Statistics
A 2026 animal study published in The Journal of Nutritional Biochemistry found that squalene supplementation significantly attenuated tumor-induced body weight loss and prevented loss of muscle mass and fiber size in cancer-bearing mice compared to untreated controls.
In the 2026 squalene study, treated mice showed enhanced grip strength and reduced tumor weight, with effects mediated through suppression of inflammatory pathways (NF-kB) and activation of muscle-building signaling (PI3K/Akt pathway).
The 2026 research demonstrated that squalene prevented excessive fat breakdown in cancer cachexia by suppressing AMPK phosphorylation, leading to reduced lipolysis and preservation of adipose tissue function in tumor-bearing mice.
According to the 2026 study, squalene enhanced antioxidant enzyme expression in muscle tissue while reducing protein degradation through the forkhead box O3a pathway, suggesting multiple protective mechanisms against cancer-induced wasting.
The Quick Take
- What they studied: Whether a natural compound called squalene could prevent cancer patients from losing dangerous amounts of muscle and fat
- Who participated: Laboratory mice with colon cancer (CT26 tumor-bearing BALB/c mice). The study was conducted in 2026 and involved multiple treatment groups receiving different doses of squalene or a control substance
- Key finding: Mice receiving squalene supplements lost significantly less body weight, maintained better muscle strength, and had smaller tumors compared to untreated mice. The compound worked by reducing inflammation and helping muscles rebuild instead of break down
- What it means for you: This early-stage animal research suggests squalene might help cancer patients preserve muscle and strength during treatment, but human studies are needed before doctors can recommend it. Talk to your oncologist before trying any supplements
The Research Details
Researchers implanted colon cancer tumors into laboratory mice, then gave some mice squalene supplements (at two different doses) while others received a placebo for 17 days. They measured changes in body weight, muscle strength, muscle size, and fat tissue. They also examined what was happening at the cellular level by looking at inflammation markers, protein breakdown, and muscle-building signals in the muscle tissue.
This type of study is called a preclinical or animal model study. Scientists use it as a first step to understand how a substance might work before testing it in humans. The researchers used molecular docking analysis (a computer technique) to predict how squalene might interact with specific proteins involved in muscle building.
The study measured multiple outcomes including grip strength, muscle fiber size, tumor weight, and specific cellular pathways involved in muscle breakdown and building. This comprehensive approach helped the researchers understand not just whether squalene worked, but how it worked at the molecular level.
Cancer cachexia is a serious problem that affects many cancer patients and makes treatment harder. Current treatments are limited, so finding new approaches is important. Testing in animals first allows researchers to understand the biological mechanisms before moving to human trials. This study provides detailed information about how squalene might work, which is valuable for designing future human studies
This is animal research, which means results may not directly translate to humans. The study was published in a peer-reviewed journal (The Journal of Nutritional Biochemistry), suggesting it met scientific standards. However, animal studies are considered early-stage evidence. The researchers used multiple doses and measured many different outcomes, which strengthens the findings. The molecular analysis helps explain the mechanism, making the results more credible. Readers should understand this is promising preliminary research, not proof that squalene works in cancer patients
What the Results Show
Mice that received squalene supplements experienced significantly less weight loss compared to untreated mice with cancer. The treated mice also maintained better grip strength (a measure of muscle function) and had larger muscle fibers in their leg muscles. Tumor weight was reduced in the squalene-treated groups, suggesting the compound may have slowed cancer growth.
At the cellular level, squalene reduced inflammation in muscle tissue by blocking a protein called NF-kB that triggers inflammatory responses. This reduction in inflammation led to less protein breakdown in muscles. The compound also activated pathways that promote muscle building and growth, particularly through a signaling system called PI3K/Akt.
In fat tissue, squalene prevented the excessive breakdown of fat that typically occurs in cancer cachexia. It did this by reducing the activity of a protein called AMPK, which normally signals the body to burn fat. The treated mice maintained more normal fat tissue composition and showed less conversion of regular fat to brown fat (which burns energy).
The study found dose-dependent effects, meaning higher doses of squalene (300 mg/kg) generally produced better results than lower doses (150 mg/kg). Squalene also enhanced the expression of antioxidant enzymes in muscle tissue, suggesting it protected cells from oxidative stress. The compound promoted genes involved in fat storage and lipid production, helping preserve adipose tissue function. These secondary findings suggest squalene works through multiple mechanisms rather than a single pathway
Cancer cachexia research has previously identified inflammation and protein breakdown as key problems. This study confirms those mechanisms and adds new information about how squalene specifically targets them. Previous research on squalene has shown antioxidant and anti-inflammatory properties in other contexts; this study is among the first to test it specifically for cancer cachexia. The findings align with the growing understanding that natural compounds with anti-inflammatory properties may help address cancer-related wasting
This is animal research in mice, not humans, so results may not directly apply to cancer patients. The study used a specific type of cancer (colon carcinoma) in a specific mouse strain, so results may differ with other cancers or in humans. The duration was relatively short (17 days in mice), while cancer cachexia in humans develops over longer periods. The study didn’t compare squalene to other potential treatments, only to placebo. Squalene from shark liver oil raises sustainability concerns that weren’t addressed. Human clinical trials would be needed to confirm safety and effectiveness in cancer patients
The Bottom Line
Based on this animal research, squalene shows promise for preventing cancer-related muscle and fat loss, but it is not yet recommended for cancer patients outside of clinical trials. The evidence is preliminary (animal studies only). If you’re undergoing cancer treatment and interested in nutritional support, discuss options with your oncology team rather than self-supplementing. Any supplements could interact with cancer medications
Cancer patients experiencing cachexia (muscle and weight loss) should be aware of this research as a potential future treatment option. Oncologists and nutritionists treating cancer patients may find this relevant for understanding emerging interventions. Researchers studying cancer cachexia and natural compounds should review these findings. People should NOT start taking squalene supplements based on this animal study alone
In the mouse study, effects were observed within 17 days. If squalene eventually reaches human trials, it would likely take several years to determine safe doses and effectiveness in cancer patients. Even if human trials are successful, it would take additional time for regulatory approval and clinical availability. Realistic timeline: 5-10 years before this could potentially become a standard treatment, if human studies support the animal findings
Frequently Asked Questions
Can squalene supplements help cancer patients who are losing weight and muscle?
Animal research from 2026 shows squalene reduced cancer-related muscle loss and weight loss in mice, but human studies haven’t been done yet. Cancer patients should not self-supplement based on animal research alone—discuss any supplements with your oncology team first, as they may interact with cancer medications.
How does squalene prevent muscle loss in cancer cachexia?
According to the 2026 research, squalene reduces inflammation in muscles and activates pathways that promote muscle building while suppressing protein breakdown. It also protects cells from oxidative stress by enhancing antioxidant enzymes, addressing multiple mechanisms of cancer-related wasting.
Is squalene from shark liver oil safe for cancer patients?
This animal study didn’t test safety in humans. Before considering squalene, cancer patients should consult their oncologist about potential interactions with chemotherapy or other treatments. Sustainability concerns about shark-derived products should also be considered when evaluating options.
When will squalene be available as a cancer treatment?
This is early-stage animal research. If human clinical trials are initiated and successful, it would likely take 5-10 years before squalene could potentially become an approved treatment. Currently, it’s not recommended for cancer patients outside of research studies.
What is cancer cachexia and why is it dangerous?
Cancer cachexia is severe, unintended weight loss involving muscle and fat breakdown that occurs in many cancer patients. It weakens patients, reduces treatment tolerance, and worsens outcomes. Current treatments are limited, making research into new interventions like squalene important for improving patient care.
Want to Apply This Research?
- Users could track body weight changes, muscle strength (using simple grip strength tests or functional assessments), and energy levels daily if they’re participating in a clinical trial of squalene or similar compounds. This data would help identify patterns and communicate with healthcare providers
- If squalene becomes available through clinical trials, users could set reminders for consistent supplementation timing and track any side effects or changes in appetite, strength, or weight. They could also log concurrent cancer treatments to identify potential interactions
- Long-term tracking would include weekly weight measurements, monthly strength assessments, and quarterly body composition analysis (if available). Users should maintain detailed records to share with their oncology team and track whether the supplement is helping maintain muscle mass during cancer treatment
This article discusses animal research on squalene for cancer cachexia. These findings have not been tested in humans. Cancer patients should not start squalene supplements based on this animal study. Always consult with your oncology team before taking any supplements, as they may interact with cancer medications or treatments. This information is for educational purposes only and should not replace professional medical advice. If you’re experiencing cancer-related weight loss or muscle wasting, work with your healthcare team to develop an appropriate nutrition and treatment plan.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.