Pineapple

Pineapple is the tropical fruit that carries bromelain, an enzyme that breaks down protein and supports digestion. It is the 50 Man Foods fruit for men who do not digest meat well.

Most men eat the flesh and throw away the core. The core has the most bromelain.

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

What it supplies

Nutrient · per 100 g, raw Amount % DV Relative amount
Vitamin C 47 mg 52%
Manganese 0.9 mg 39%
Fiber 1 g 4%
Carbohydrate 13 g 5%
Calories 50 kcal 3%

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

Bromelain is a protease enzyme that helps break down protein. It is concentrated in the core and stem; eating pineapple with a meal aids digestion.

Manganese supports the enzyme that protects the mitochondria from oxidative damage.

How much, how often

  • 100–200 g

    With or after a meal

    Bromelain aids digestion; the core has the most.

  • Fresh

    Not canned

    Canned pineapple is usually packed in syrup; fresh is the point.

How to buy and prepare it

Ripe pineapple smells sweet at the base and the leaves pull out easily. Green skin is fine; ripeness is about the smell, not the color.

Avoid pineapples with soft spots, fermented smell or dry leaves.

Slice off the top and bottom, peel, remove the eyes, cut into chunks. Eat the core; it has the most bromelain.

Grilled pineapple with butter and salt is a side that goes with pork or chicken.

Cut pineapple keeps 5 days in the fridge in an airtight container. Whole pineapple keeps 2–3 days at room temperature.

Frozen pineapple is fine for smoothies but the bromelain is partly destroyed by blanching.

In these guides

Questions

Does pineapple burn fat?
No. Bromelain aids digestion but does not burn fat. It is an enzyme, not a fat burner.
Is pineapple keto?
Not strictly — 10 g net carbs per 100 g. A small serving fits; it is not a free food.
Can you eat pineapple if you have reflux?
Some men find it helps; others find the acid aggravates reflux. Test with a small amount first.