How Long Can You Survive Without Food?

Food and water are essential to us humans to survive. We get nutrients from food to further developed our mental and physical capacity. And water helps us stay hydrated to function properly in our daily lives—various systems found in our bodywork thanks to the aid of a healthy food diet and water intake.

How long can you survive without food? A human can survive without food for more than three weeks. It can even extend up to 1 to 2 months.

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In this short read, you will understand how long a person can survive without food and how it will affect the body.

Average Time Without Food Consumption

If you are a person who weighs 70 kilograms, you can survive for 1 to 3 months without food consumption. It is because you have enough calories stored in your body.

But, there are instances where people deliberately stopped eating due to hunger strikes have died after 40 to 60 days. It means that it is unlikely that you will survive for three months.

Without any food intake, your body will generally shift and use your tissue to serve as fuel. It can only happen for a short period of time.

How It Affects The Body

Food serves as a body fuel to make sure that the body is properly working.

Cardiovascular System

When you stopped eating, the body breaks down the tissue that can act as a fuel. It includes all body muscles, including the heart. It will lead to a drop in pulse and blood pressure.

It is because the body does not have enough fuel to pump blood in and out of the heart across all body systems. It can lead to heart failure.

Gastrointestinal System

Stopping food intake can interfere with how the stomach works. It can lead to a lot of gastrointestinal complications such as bloating, stomach pain, vomiting, nausea, and bacterial infections. Without food, you are limiting the body to get enough nutrition that can also lead to constipation. It is because the muscle in the intestine starts to weaken, and they might not have enough strength to push the digested food.

Central Nervous System

Food starvation can affect your central nervous system, which is the brain itself. The brain consumes ⅕ of a person’s energy. Depriving food can lead to sleep issues and difficult to concentrate.

Endocrine System

The endocrine system needs fat and cholesterol to produce hormones. Without these hormones, there will be a significant impact when it comes to your body. Your bones will start to weaken, and the metabolic rate can drop drastically.


Human bodies are tough and can function for days, even without proper food and water. But there’s always a limitation when you prolonge food starvation. It is not healthy to practice this kind of behavior as you’re only making it worst.

Those who experience starvation should be monitored by a physician and need to follow up from time to time to avoid referring syndrome.