How Fasting Can Support Less Pain

Fasting is a simple health tool: an intentional period when you do not eat.

Most people already fast every night. You finish dinner, sleep, wake up, and eat again. A fasting practice simply gives that break from food more structure.

I think more people should be willing to consider it. Not recklessly, and not because somebody online made a wild promise. But fasting can be a practical way to support weight loss, blood-sugar regulation, recovery, and overall health when it is done intelligently.

You do not need a special membership, a cabinet full of supplements, or some complicated meal plan to begin. You need a reasonable plan, water, and enough awareness to pay attention to what your body is doing.

What fasting is actually doing

When you stop eating for a while, your body eventually moves away from using the most readily available glucose for fuel and begins using stored energy. That does not mean every person gets the same result or should use the same fasting window. It means the body is built to handle a break from eating.

Research on time-restricted eating shows that it can be a workable option for weight loss and some blood-sugar measures, especially when people can follow the routine consistently.[1] It is not automatically better than every other nutrition approach. It is one option that works well for some people because it creates a simple structure.

That is a big reason I like fasting. It gives you a way to stop eating all day long and stop treating late-night snacking like it is a required hobby. You are not tracking every calorie like it is your full-time job. You are being intentional about when you eat.

For some people, that alone changes a lot.

The place I usually start: 16:8

A simple place to start is a 16:8 fasting window. You fast for 16 hours and eat within an eight-hour window. For some people, that means finishing dinner at 8:00 p.m. and eating the next day at noon. Your schedule may look different. The point is the structure, not trying to win an award for suffering.

You are not starving yourself. You are putting boundaries around when food starts and stops.

For a lot of people, that makes it easier to stop grazing all day, stop eating late at night, and pay attention to whether they are actually hungry or just bored, stressed, tired, or standing too close to the pantry.

In a six-month randomized trial involving adults with obesity and type 2 diabetes, an eight-hour eating window was associated with weight loss and lower A1C levels. It was not shown to be better than every other approach for every person. It was one workable option.[1]

That matters because the best health plan is not the perfect plan you follow for four days. It is the reasonable plan you can keep doing.

Fasting still depends on what you do when you eat

Fasting is not a permission slip to eat garbage inside your eating window and then act surprised when you do not feel better.

The food still matters. Protein matters. Fruits and vegetables matter. Fiber matters. Hydration matters. If you are using fasting to support recovery and movement, what you put back into your body needs to support that work too.

You do not have to eat perfectly. Nobody does. But there is a difference between having a normal meal and turning every eating window into a food free-for-all because you “earned it.” That is not a strategy. That is just a different kind of chaos.

I am not here to make food complicated. I am saying that fasting works better when it is part of taking care of yourself, not part of beating yourself up.

How fasting may support less pain

Pain is not normal. Common? Absolutely. Normal? No.

Sometimes the thing making your body hurt more is not just the sore spot. It is the pileup: poor sleep, stiffness, swelling, extra weight, blood sugar that is all over the place, stress, and no recovery.

This is definitely my own opinion, based on what I have experienced in my body and what I have learned over time: fasting can be one useful tool for people who want to feel better in their bodies.

Fasting does not directly fix pain. It does not reach into your low back and fix it overnight. What it may do is support changes that make pain easier to manage: weight loss, blood-sugar regulation, inflammation markers, sleep, and recovery.

If your knees hurt and you lose weight, there is less load going through them every time you stand up, walk, go up stairs, or pick up a grandkid. If you are less stiff and sleeping better, you may move better. If you move better, you are more likely to keep moving.

The research is promising, but more direct pain research is needed. A review of intermittent fasting and chronic pain found potential for fasting as part of a broader pain-management plan.[2] Research on inflammation is mixed. One meta-analysis of randomized trials found modest reductions in C-reactive protein, an inflammation marker, but did not find significant reductions in every marker studied.[3]

That is why I look at fasting as support. It can be part of the work. It is not all of the work.

Massage therapy, better movement, sleep, hydration, thoughtful nutrition, and getting the right medical care when you need it all still matter. The goal is not to find one magic answer. The goal is to give your body fewer things to fight against.

What I have noticed in my own body

I have experienced less stiffness and swelling when I fast. I have noticed better mobility, better sleep, and better recovery. Even a 24-hour fast can make a difference for me.

I am not saying my experience automatically becomes your experience. Bodies are different. Health histories are different. Medications are different. But when the body has less going on that it needs to fight against, it often has more room to recover.

When you are carrying inflammation, stress, poor sleep, a lot of processed food, and no recovery time, the body can stay locked down. That does not mean your pain is made up or “all in your head.” It means pain is not always purely mechanical. The nervous system, sleep, recovery, metabolic health, and movement all matter.

Your body is trying to protect you. Give it some help.

Longer fasts are a different conversation

I personally use a combination of fasting approaches. I like a 16:8 daily fasting window. I also suggest considering a 48- to 72-hour fast once or twice a month. I have experienced great results from a seven-day fast and may use one once a quarter or twice a year.

That is my experience and my approach. It is not a universal prescription.

A longer fast is not something you do because you are frustrated with the scale on a Tuesday. It requires thought, preparation, fluids, electrolytes when appropriate, and a real look at your health history. The longer the fast, the more seriously you need to take the preparation and the re-entry.

• Please seek medical guidance before starting a fast longer than 24 hours.

Get individualized medical guidance before fasting if you are pregnant or breastfeeding, have diabetes, take glucose-lowering medication, have kidney or heart disease, follow a sodium-restricted diet, are a frail older adult, or have a history of disordered eating. People using insulin or sulfonylureas may need medication adjustments and closer monitoring.[1] [4]

No gold star for making yourself miserable. The goal is to help your body work better.

Fasting properly means hydration is not optional

A fast is not dry fasting. Not drinking water is not discipline. It is just a good way to make yourself feel terrible.

You need fluids and an intentional hydration plan. A lot of the fluid people get each day comes from food, so when food is out for a while, water needs to be intentional.[4]

For my own routine, I use LMNT Hydration Salts. I recommend at least one packet mixed into 30 to 40 ounces of water. In my personal routine, I often use two or three packets over the day, with each packet mixed into 30 to 40 ounces of water, plus additional plain water.

That is my personal routine, not a universal electrolyte prescription. Two or three packets can add a substantial amount of sodium. It may not be appropriate if you have high blood pressure, kidney disease, heart disease, or have been told to limit sodium. Check with the clinician who knows your health history before copying anyone else’s electrolyte intake.

Adequate fluids support normal hydration and circulation. Electrolytes can be useful for some people, particularly when they are fasting longer or sweating more, but more is not automatically better. Pay attention to what you are using and why.

Hydration can also make the fasting window more manageable when hunger starts talking a little too loudly. But do not confuse staying hydrated with proof that fasting cures pain. It does not. It is one way to support the body while you are doing the work.

Affiliate disclosure: I may earn a commission if you purchase through my [LMNT link], at no additional cost to you.

Do not use fasting to ignore a real problem

If you have back pain that is getting worse, numbness or weakness, pain after an injury, unexplained swelling, fever, or a symptom that is changing fast, fasting is not the first thing to figure out. Get checked out.

If your pain has been around for a while, look at the whole picture. How are you sleeping? How much are you moving? What is your range of motion like? Are you drinking water? Are you getting recovery? Are you taking care of yourself before your body forces you to?

Fasting may support less pain indirectly by helping with the things that make pain heavier: inflammation, excess load, poor recovery, and poor metabolic health. It is one tool in the toolbox. Use it intelligently. Stay hydrated. Get guidance before longer fasts. And pay attention to what your body is telling you.

The goal is simple: help your body move better, hurt less, and feel more like your own again.

References

[1]: https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2811116 "Time-Restricted Eating in Adults With Type 2 Diabetes: A Randomized Clinical Trial"

[2]: https://pmc.ncbi.nlm.nih.gov/articles/PMC9228511/ "Intermittent Fasting: Potential Utility in the Treatment of Chronic Pain across the Clinical Spectrum"

[3]: https://pubmed.ncbi.nlm.nih.gov/32947129/ "Effects of Intermittent Fasting Diets on Plasma Concentrations of Inflammatory Biomarkers: A Systematic Review and Meta-Analysis of Randomized Controlled Trials"

[4]: https://hopkinsdiabetesinfo.org/an-overview-of-intermittent-fasting "An Overview of Intermittent Fasting"

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