🍎 Food pH List: What’s Acidic, Neutral, and Alkaline?

Understanding the pH of the foods and drinks we consume can help us better support oral health

and reduce risk of enamel erosion.

Our teeth are constantly exposed to changes in pH throughout the day. When the mouth becomes

too acidic (typically below pH ~5.5), enamel begins to soften temporarily, making teeth more

vulnerable to wear over time.

This guide provides a simple breakdown of common foods and their approximate pH levels.

Very Acidic Foods (pH 2.0–3.5)

These foods and drinks have the highest acid levels and can significantly lower oral pH:

• Lemon juice (~2.0)

• Lime juice (~2.0–2.5)

• Vinegar (~2.5–3.0)

• Soft drinks / soda (~2.5–3.5)

• Energy drinks (~2.8–3.5)

• Sports drinks (~2.8–3.5)

• Cranberries (~2.3–3.0)

• Pickles (~3.0–3.5)

👉 These are the most erosive when frequently sipped or held in the mouth.

Moderately Acidic Foods (pH 3.5–5.5)

Still acidic, but generally less aggressive than the category above:

• Oranges (~3.0–4.0)

• Grapefruit (~3.0–3.8)

• Apples (~3.3–4.0)

• Blueberries (~3.1–3.4)

• Tomatoes (~4.0–4.6)

• Yogurt (~4.0–4.5)

• Wine (~3.0–4.0)

• Ketchup (~3.5–4.5)

• Pineapple (~3.2–4.0)

Mildly Acidic to Near Neutral (pH 5.5–7.0)

These are closer to neutral and generally less disruptive to enamel:

• Bananas (~5.0–5.3)

• Cheese (~5.5–6.5)

• Milk (~6.5–6.8)

• Eggs (~6.0–7.0)

• Oats (~5.5–6.5)

• Melons (~6.0–6.7)

👉 These are generally considered more “tooth-friendly” options.

Neutral to Slightly Alkaline (pH 7.0+)

These foods are closer to or above neutral pH and can help buffer acidity:

• Water (~7.0)

• Spinach (~7.0–7.5)

• Broccoli (~6.3–7.5)

• Celery (~6.5–7.5)

• Almonds (~7.0–8.0)

👉 These can support a more balanced oral environment.

🦷 Why This Matters for Oral Health

Enamel begins to soften when the oral environment drops below approximately pH 5.5. This doesn’t mean enamel is immediately lost—but repeated or prolonged exposure to acidic environments can increase the risk of:

• Enamel erosion

• Tooth sensitivity

• Increased staining

• Higher cavity risk over time
  

💡 Key Takeaways

• It’s not just what you eat — it’s also how often and how long your teeth are exposed

• Sipping acidic drinks over time is more harmful than consuming them quickly with meals

• Saliva helps naturally buffer acid back toward a healthier pH range (~6.5–7.5)

• Rinsing with water after acidic exposure can help reduce risk