Papaya

Papaya is the tropical fruit that carries papain, an enzyme that breaks down protein the same way bromelain does. It is the 50 Man Foods fruit for men who do not digest meat well.

Most men do not think to eat papaya, which is a mistake: it is cheap, widely available and one of the best digestive aids in the food supply.

  • With or after a meal
  • Tropical fruit
  • Updated Sep 2026

What it supplies

Nutrient · per 100 g, raw Amount % DV Relative amount
Vitamin C 60 mg 67%
Folate 38 mcg 10%
Fiber 1 g 4%
Carbohydrate 11 g 4%
Calories 43 kcal 2%

Source: USDA FoodData Central.Percent Daily Values are based on adult reference intakes. The bars stop at 100%; the numbers do not.

Why it works

Papain is a protease enzyme that helps break down protein. Eating papaya with a meal aids digestion, especially for men who have low stomach acid.

The fiber in papaya feeds gut bacteria that produce short-chain fatty acids, which support the gut barrier.

How much, how often

  • 100–200 g

    With or after a meal

    Papain aids digestion; the flesh is mild and sweet.

  • Green or ripe

    Both useful

    Green has more papain; ripe is sweeter.

How to buy and prepare it

Ripe papaya yields to gentle pressure and smells sweet at the stem end. Green papaya is used in salads and has more papain.

Avoid papayas with soft spots, fermented smell or wrinkled skin.

Slice in half, remove the seeds, scoop the flesh with a spoon. Squeeze lime over it and eat.

Green papaya shredded with lime, salt and chilli is a Southeast Asian salad that is the best way to eat it.

Ripe papaya keeps 3 days in the fridge. Green papaya keeps a week at room temperature.

Frozen papaya is fine for smoothies but the papain is partly destroyed.

In these guides

Questions

Is papaya keto?
Not strictly — 8 g net carbs per 100 g. A small serving fits; it is not a free food.
Can you eat papaya seeds?
Yes, they are peppery and support the gut. Some men blend them into smoothies.
Does papaya really help digestion?
Papain is a real protease enzyme. Studies show it aids protein digestion, especially for men with low stomach acid.