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Fruits

Guava

Guavas are 81% water, so 100 g (3.5 oz) brings only 68 kcal and 5.4 g of fiber.

USDA description: Guava, common, raw

  • High in fiber
  • Low energy density

Estimated satietyHow it is calculated

Starting point+1
Very low energy density: 68 kcal/100 g+2
Protein: 3.8 g/100 kcal0
Fiber: 7.9 g/100 kcal+2
Solid food with 80.8 g of water+1
Sum6
Capped at 55

Our own estimate from the values per 100 g: useful for comparing foods with each other, not a measurement in people. Holt index (1995): this food was not measured.

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Last updated
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Sources
7 primary
Data
USDA FDC 173044

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Nutrition facts

Calories
68 kcal per serving
68 kcal per 100 g (3.5 oz)
Protein
2.6 g per serving
2.6 g per 100 g (3.5 oz)
Carbohydrates
14.3 g per serving
14.3 g per 100 g (3.5 oz)
of which sugars
8.9 g per serving
8.9 g per 100 g (3.5 oz)
Fiber
5.4 g per serving
5.4 g per 100 g (3.5 oz)
Fat
1 g per serving
1 g per 100 g (3.5 oz)
of which saturated
0.3 g per serving
0.3 g per 100 g (3.5 oz)
Water
80.8 g per serving
80.8 g per 100 g (3.5 oz)

Source: USDA FoodData Central: Guavas, common, raw (FDC ID 173044), accessed September 23, 2026.

A typical 100 g (3.5 oz) serving provides about 68 kcal, 2.6 g of protein, and 5.4 g of fiber.

The typical serving (100 g (3.5 oz)) is a common amount used for the math, not a recommendation. Ounces and cups are rounded US equivalents; the values come from the database entry cited in the sources.

What it is and how to eat it

The common guava (Psidium guajava) is a tropical fruit with green or yellow skin and white, pink or red flesh full of small, hard seeds, and it is eaten whole, skin and all, in pieces or as juice. It is also made into sweets with added sugar, such as ate de guayaba in Mexico or bocadillo in Colombia. This page covers raw guava, with 68 kcal, 5.4 g of fiber and 228 mg of vitamin C per 100 g according to USDA.

A 100 g (3.5 oz) serving, about two guavas by USDA's average weight, provides 68 kcal, 5.4 g of fiber and 2.6 g of protein, more protein than most fruits but not enough to be the protein part the 2025 nutrition advisory on GLP-1 therapy suggests eating first; with a yogurt or some queso fresco you get both. The same advisory advises avoiding very high-fiber foods in the first few days of treatment and, for constipation, increasing fiber gradually, so in those days, and after a dose increase, half a serving of well-ripened fruit may sit better. Guava paste packs added sugar into a small volume, so it is no substitute for the fruit.

What the evidence says

With 228 mg of vitamin C per 100 g, almost ten times the 24 mg the EU requires for a "high vitamin C" claim, the 100 g serving provides 285% of the 80 mg reference value, so it could carry the authorized claim "vitamin C contributes to the normal function of the immune system" (Regulations (EC) No 1924/2006, (EU) No 1169/2011 and (EU) No 432/2012). With 5.4 g of fiber per 100 g it is a "source of fibre", and its 7.9 g per 100 kcal meet the 3 g per 100 kcal criterion the EU sets for a "high fibre" claim (Regulation (EC) No 1924/2006). The EU register lists as non-authorized the assessed claims that presented guava as a major source of antioxidants or credited its lycopene with benefits for the skin. In ate or bocadillo, the added sugar counts as free sugar under WHO's 2015 guideline, which recommends keeping it below 10% of energy, unlike the intrinsic sugars in whole fruit.

The sources for this section are listed under "Sources" at the end of the page.

Satiety

The 1 to 5 score is our own estimate: it starts at 1 point, adds points for low energy density, for protein and fiber per 100 kcal, and for the water in solid foods, and subtracts points for drinks with calories. It is useful for comparing foods with each other; it is not a measurement in people.

What to keep in mind on a GLP-1 medication

High in fiber
It has at least 3 g of fiber per 100 g. Fiber adds bulk and slows digestion, which contributes to fullness, and it helps keep you regular; constipation is a common side effect of GLP-1 medications. It is usually easier to tolerate when you increase it gradually and drink enough water.
Low energy density
It has 100 kcal or less per 100 g: plenty of volume for few calories, which helps you feel full. On a GLP-1 medication, which already reduces your appetite, make sure these foods do not push protein foods off your plate.

Frequently asked questions about guavas

How much protein does a 100 g (3.5 oz) serving of guavas have?

100 g (3.5 oz) of guavas has 2.6 g of protein. A typical 100 g (3.5 oz) serving has about 2.6 g of protein. That is 3.8 g of protein per 100 kcal.

How many calories are in a 100 g (3.5 oz) serving of guavas?

100 g (3.5 oz) of guavas has 68 kcal. A typical 100 g (3.5 oz) serving has about 68 kcal. That is a very low energy density.

How many grams of fiber are in a 100 g (3.5 oz) serving of guavas?

100 g (3.5 oz) of guavas has 5.4 g of fiber. A typical 100 g (3.5 oz) serving has about 5.4 g of fiber. They carry our “High in fiber” tag.

How filling are guavas?

Very filling for the calories they provide: our estimated satiety score is 5 out of 5. Calculation: 1 (base) + 2 (very low energy density: 68 kcal/100 g) + 0 (protein: 3.8 g/100 kcal) + 2 (fiber: 7.9 g/100 kcal) + 1 (solid food with 80.8 g of water) = 6; capped at 5. It is an estimate based on its composition, not a measurement in people.

Are guavas a good choice on a GLP-1 medication?

Based on our tags, this is what matters about guavas on a GLP-1 medication. “High in fiber”: a good amount of fiber, which helps keep you regular; it is easier to tolerate when you increase it gradually and drink enough water. “Low energy density”: plenty of volume for few calories; make sure it does not push protein foods off your plate. These are general guidelines, not medical advice: everyone tolerates foods differently.

How many grams or ounces are in a serving of guavas?

We use 100 g (3.5 oz) as a typical serving. That amount provides about 68 kcal, 2.6 g of protein, and 5.4 g of fiber. It is a reference for calculations, not a recommendation of how much to eat.

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Sources

Sources for the data on this page, with the access date.

  1. Official databaseU.S. Department of Agriculture, Agricultural Research Service.USDA FoodData Central: Guavas, common, raw (FDC ID 173044).accessed .
  2. Clinical guidelineObesity (Wiley).Mozaffarian D, et al. Nutritional priorities to support GLP-1 therapy for obesity: A joint Advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association, and The Obesity Society. Obesity. 2025;33(8):1475-1503. doi:10.1002/oby.24336.accessed .
  3. RegulatorOfficial Journal of the European Union (EUR-Lex).Regulation (EC) No 1924/2006 on nutrition and health claims made on foods (Annex).accessed .
  4. RegulatorOfficial Journal of the European Union (EUR-Lex).Regulation (EU) No 1169/2011 on the provision of food information to consumers (Annex XIII, nutrient reference values).accessed .
  5. RegulatorOfficial Journal of the European Union (EUR-Lex).Commission Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods.accessed .
  6. RegulatorEuropean Commission.EU Register of nutrition and health claims made on foods.accessed .
  7. Clinical guidelineWorld Health Organization.Guideline: sugars intake for adults and children (2015).accessed .