What happens to your body if you only eat fruit?

 

1. In the short term (first days to weeks): Increased hydration and energy bursts: Fruits are high in water and natural sugars like fructose, so you might feel more energetic at first. Better digestion (for some): The fiber in fruit can help bowel movements and may make you feel lighter. Blood sugar spikes: Without proteins, fats, or complex carbs to slow absorption, sugar from fruit can cause rapid spikes and drops in blood sugar, leading to energy crashes.

2. Over the medium term (weeks to months): Protein deficiency: Fruits have almost no complete proteins, so your muscles may weaken, healing slows, and you can feel fatigued. Nutrient gaps: You’ll miss out on vitamin B12, vitamin D, calcium, zinc, and omega-3 fats, nutrients critical for brain, bone, and nerve health. Tooth problems: Constant exposure to fruit sugars and acids can erode enamel and increase cavities. Digestive discomfort: Excess fiber and fructose can lead to bloating, gas, and diarrhea for some people.

3. Long term (months to years): Muscle loss and weakened immunity: Chronic protein and fat deficiency causes muscle wasting and makes you more prone to illness. Bone weakness: Lack of calcium, vitamin D, and protein can lead to brittle bones and osteoporosis risk. Hormonal imbalance: Many hormones (including sex hormones) need dietary fats for production, without them, your hormonal health suffers. Nerve damage: Long-term vitamin B12 deficiency can cause irreversible nerve damage and cognitive decline.

See also: 5 heart-healthy breakfast choices for people with cardiovascular disease