Herbs Hub
Oats, Avena sativa. Botanical plate: Illustration Avena sativa0
Plate: Illustration Avena sativa0. Unknown. Public domain.

Oats

Avena sativa

Seeds & Grains. Western & European and Modern nutrition.

Also called Oatmeal, Rolled oats, Oat bran, Oat groats

Pinyin: Yàn Mài

Spanish: Avena

Gluten risk unless certified

A whole grain used as porridge, granola and flour, whose soluble fiber called beta-glucan is its main health ingredient.

Did you know? In his 1755 dictionary, Samuel Johnson defined oats as a grain that England gave to horses but that Scotland used to feed its people.

What it may help, and how strong the proof is

  • Cholesterol. Oat beta-glucan lowers LDL cholesterol a bit in many trials. The effect is modest. Daily oats are part of heart-healthy diets.
    Good proof
  • Blood sugar. Oat fiber can slow the blood sugar rise after a meal. Small trials show mild help.
    Early proof
  • Skin. Colloidal oatmeal baths ease itching from dry or irritated skin. Trials are small, but the remedy has a fair track record.
    Early proof

Parts of the body

Heart & vessels, Liver, Pancreas & blood sugar, Skin & hair

Traditional use

Old Western folk care used oatmeal baths for itchy skin and oat gruel for sore throats and upset stomach.

How it is classified

Herbal actions
Demulcent, Nutritive. Energy: neutral.

How people take it

Cholesterol studies often used about 3 grams of oat beta-glucan a day. Oatmeal baths are made with finely ground oats in warm water.

Food and bath.

Where to get it

Grown in cool regions such as Canada, Russia, Europe and the US. Sold as rolled oats, steel-cut, instant, oat bran and oat flour. Buy certified gluten-free oats if you have celiac disease.

Be careful

Safe as food for most people, but oats are often grown or processed near wheat, barley and rye, so they can contain gluten. Oat bran can cause gas. Some people react to oat protein with allergy symptoms.

Avoid if: celiac disease.

Mixing with other things

  • Works well together

    Both give soluble fiber that helps lower LDL cholesterol.

  • Works well together

    Banana and oats are a classic breakfast pairing.

  • Works well together

    Raisins are a common add-in for oatmeal and granola.

  • Works well together

    Ground flax is a common mix-in for oatmeal and granola.

  • Works well together

    Chia is often soaked into oatmeal or overnight oats.

  • Works well together

    Cinnamon and oatmeal are a classic breakfast pair.

  • Worth knowing
    Diabetes medicine (metformin, insulin, glipizide, Ozempic)

    Oat fiber can lower blood sugar after meals. Watch levels if you take diabetes medicines.

The honest take

Oats are a healthy whole grain. Their cholesterol effect is real but modest. Oat baths for itchy skin have an old track record, but they do not treat skin disease.