Evităm glutenul și lactoza.

Evităm is the 1st person plural present tense form of a evita = to avoid.

So:

• eu evit = I avoid
• tu eviți = you avoid
• el/ea evită = he/she avoids
• noi evităm = we avoid
• voi evitați = you all avoid
• ei/ele evită = they avoid

In this sentence, evităm means we avoid.

Romanian often drops the subject pronoun when it is clear from the verb ending.

Because -ăm shows we, Evităm already means we avoid.
You could say Noi evităm glutenul și lactoza, but noi is usually added only for emphasis or contrast, such as:

• Noi evităm glutenul, dar ei nu. = We avoid gluten, but they don’t.

Yes, both are definite.

Romanian usually adds the definite article to the end of the noun, and the ending depends on the noun’s gender and form.

• gluten → glutenul = the gluten
• lactoză → lactoza = the lactose

So the difference is just due to different noun patterns:

• -ul is a common definite ending for masculine/neuter singular nouns
• -a is a common definite ending for feminine singular nouns

Even though English often says just gluten and lactose, Romanian naturally uses the definite forms here.

Romanian often uses the definite article with substances or categories in cases where English uses no article.

So:

• English: We avoid gluten and lactose.
• Romanian: Evităm glutenul și lactoza.

This is a normal Romanian way to talk about those substances in a general, known-category sense. It does not necessarily mean a very specific batch of gluten or lactose.

The dictionary forms are:

• gluten = gluten
• lactoză = lactose

The sentence uses the definite singular forms:

• glutenul
• lactoza

So if you look them up in a dictionary, look for gluten and lactoză.

• gluten is neuter
• lactoză is feminine

Romanian neuter nouns behave like:

• masculine in the singular
• feminine in the plural

That is why singular glutenul looks like a masculine-type form.

A simple English-friendly approximation is:

eh-vee-TUHM GLOO-teh-nool shee lak-TOH-zah

A few key sounds:

• ă in evităm is like the a in about
• ș in și is sh
• și is pronounced roughly shee

Stress usually falls like this:

• eviTĂM
• GLUtenul
• și
• lacTOza

They are the direct objects of the verb a evita, so they are in the accusative.

In this sentence, though, their forms look the same as the nominative/accusative forms that Romanian commonly uses for nouns. Romanian case differences are often more visible with:

• articles in some contexts
• adjectives
• pronouns
• prepositions

So the important idea here is simply: a evita takes a direct object, and glutenul and lactoza are those objects.

The given order is the most neutral and natural:

• Evităm glutenul și lactoza.

But Romanian word order is somewhat flexible. For example:

• Evităm lactoza și glutenul.
  Same basic meaning, just reversing the list.

• Glutenul și lactoza le evităm.
  More marked; this gives extra emphasis to glutenul și lactoza.

So the original sentence is the standard, straightforward way to say it.

Yes, that is grammatically correct.

But in ordinary Romanian, the pronoun noi is often unnecessary because evităm already tells you the subject is we.

So:

• Evităm glutenul și lactoza. = natural, neutral
• Noi evităm glutenul și lactoza. = also correct, but more emphatic

Yes. In this sentence, și simply means and:

• glutenul și lactoza = gluten and lactose

It is one of the most common Romanian words, and you will see it constantly in simple lists and coordinated phrases.