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Folic acid natural sources

The word folic acid is derived from foliage. Folic acid is commonly found in dark green and leafy vegetables such as:

• spinach
• asparagus
• romaine lettuces
• turnip greens
• dried or fresh beans and peas, etc.

Food containing folic acid – Celery, arugula, avocado, Brussels sprouts, basil, cucumber romaine salad. Image Credit: Komarina / Shutterstock

Other sources of this vitamin include:

• sunflower seeds
• avocados
• peanuts
• orange juice
• canned pineapple juice
• cantaloupe
• honeydew melon
• grapefruit juice
• banana
• raspberry
• papaya
• grapefruit
• strawberry
• beets
• broccoli
• corn
• tomato juice
• vegetable juice
• Brussels sprouts
• wheat germ
• bok choy etc.

Food containing folic acid / vitamin B9, dietary fiber, natural minerals and folic acid. Image Credit: ratmaner / Shutterstock

Among animal products liver and liver products, lamictal for depression and weight gain whole eggs, and baker's yeast is rich in folates.

Folic acid in fortified foods

Folic acid is also found in fortified foods such as flour, pasta, cereal, bread. Breakfast cereals, for example, are fortified with 25% to 100% of the recommended dietary allowance (RDA) for folic acid.

Certain countries have mandatory fortification of grains with folic acid. In these places fortified products make up a significant source of the population's folic acid intake.

To make the intake of folates universal and to standardize intake of folates a dietary folate equivalent (DFE) system was established. 1 DFE is defined as 1 μg of dietary folate, or 0.6 μg of folic acid supplement. This is reduced to 0.5 μg of folic acid if the supplement is taken on an empty stomach.

Folic acid supplements

Folic acid is commonly administered as pills or supplements as well. This is required in conditions where the daily need for the vitamin exceeds that provided in regular diet. Some of these conditions include pregnancy, breast feeding mothers, those with inflammatory bowel disease, HIV, those on anticancer drugs and other drugs that interfere with folate absorption and utilization.

Nature of folic acid found in foods

Folic acid is a water soluble vitamin. It is thus lost on open boiling and cooking. Folic acid is susceptible to high heat and UV rays as well. It is heat labile in acidic environments and may also be subject to oxidation.

Further Reading

• All Folic Acid Content
• What is Folic Acid?
• Folic Acid and Health
• Folic Acid Biology
• Folic Acid Supplementation

Written by

Dr. Ananya Mandal

Dr. Ananya Mandal is a doctor by profession, lecturer by vocation and a medical writer by passion. She specialized in Clinical Pharmacology after her bachelor's (MBBS). For her, health communication is not just writing complicated reviews for professionals but making medical knowledge understandable and available to the general public as well.