Consider the following statements in respect of probiotics:

1. Probiotics are made of both bacteria and yeast.
2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut.
3. Probiotics help in the digestion of milk sugars. Which of the statements given above is/are correct?

Probiotics are live microorganisms that, when consumed, are intended to provide health benefits.

Probiotics consist of both bacteria and yeast. These microorganisms, though often thought of as harmful, can be beneficial.

Statement 1 is correct.

Probiotics naturally occur in our gut. They are also found in certain foods.

Statement 2 is incorrect.

There's evidence suggesting probiotics can ease lactose intolerance symptoms by aiding in the digestion of milk sugars.

Statement 3 is correct.

Hence, statements 1 and 3 are correct.