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Can You Gain Weight With Brewer's Yeast?

author image Jill Corleone
Based in Hawaii, Jill Corleone is a registered dietitian who has been writing and lecturing on diet and health for more than 10 years. Her work has been featured on the Huffington Post, Diabetes Self-Management and in the book "Noninvasive Mechanical Ventilation," edited by John R. Bach, M.D. Corleone holds a Bachelor of Science in nutrition.
Can You Gain Weight With Brewer's Yeast?
Brewer's yeast helps you get your B vitamins. Photo Credit tonigenes/iStock/Getty Images

Although brewer's yeast isn't your typical weight-gaining product, it's a rich source of calories that could make you gain weight. Brewer's yeast is a nutritional supplement most often taken for its B-vitamin and mineral content. If you're taking the supplement and not accounting for the extra calories, you may put on some pounds. Talk to your doctor before adding brewer's yeast to your diet.

Brewer's Yeast Nutrition

In addition to helping you get more vitamins and minerals in your diet, brewer's yeast is also a source of carbohydrates and protein. One serving, which is 3 tablespoons, contains 95 calories, 1 gram of fat, 10 grams of carbs, 5 grams of fiber and 11 grams of protein. It also meets 25 percent or more of the daily value for the B vitamins thiamin, riboflavin, niacin, pantothenic acid, vitamin B-6 and folate. The nutritional yeast is also a good source of chromium and manganese, meeting more than 10 percent of the daily value in a serving.

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Brewer's Yeast and Weight Gain

Eating more calories than your body burns, no matter what the source, leads to weight gain. Consuming an extra 95 calories a day from brewer's yeast without making any other changes to your diet or exercise routine can lead to an almost 10-pound weight gain in a year, since a pound of fat amounts to 3,500 calories. Unless you started out underweight, that extra weight may impact your health.

Counting the Calories

Knowing your daily calorie needs for weight maintenance and tracking your intake from all sources may help prevent the weight gain from brewer's yeast. Your doctor can help you determine the number of calories you need a day to maintain a healthy weight. The publication "Dietary Guidelines for Americans, 2010" estimates that women need approximately 1,600 to 2,400 calories a day and men 2,000 to 3,000 calories a day. Reading food labels and carefully measuring out your food and supplements can help you stay on track.

Brewer's Yeast Considerations

While brewer's yeast is considered a safe supplement, it may not be appropriate for everyone. Due to potential drug interactions, specifically with medications used to treat diabetes, you should talk to your doctor before adding brewer's yeast to your daily routine. Also, people with Crohn's disease should talk to their doctor first before taking the supplement, according to the University of Maryland Medical Center.

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