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?

Let's analyze the statements regarding probiotics:

1. Probiotics are made of both bacteria and yeast: Correct. Probiotics are live microorganisms, primarily bacteria (such as Lactobacillus and Bifidobacterium species), but some also contain beneficial yeasts (like Saccharomyces boulardii).

2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut: Incorrect. While many probiotic organisms are found in fermented foods, the beneficial bacteria and yeasts used in probiotics do naturally occur in the human gut microbiome and are essential for its health. Probiotic supplements aim to augment or restore these natural populations.

3. Probiotics help in the digestion of milk sugars: Correct. Many probiotic bacteria produce enzymes, like lactase, which help break down lactose (milk sugar). This is why probiotics are often recommended for individuals with lactose intolerance, as they can aid in the digestion of dairy products and alleviate associated symptoms.

Therefore, statements 1 and 3 are correct.