Which breads are best — and the 'healthy' kind you should avoid

Despite a 2.2% price increase in the last year, bread remains a remarkably popular staple in American households. Approximately 97% of US families purchase bread on a weekly basis, with a growing number seeking out options rich in fiber, protein, and lower in carbohydrates.

The Complex Relationship Between Bread and Health

However, a growing body of evidence suggests that bread may not be a healthy staple for the majority of Americans. Registered dietitian Theresa Link, a diabetes educator and metabolic health expert from Virta Health, points to a concerning trend: “About 75% of the US population is overweight, obese or has Type 2 diabetes — conditions driven by insulin resistance.” She further explains that high-carb foods like bread can exacerbate this condition over time.

Did You Know? Authentic sourdough bread is made using only flour, water, salt, and a naturally occurring starter of wild yeast and lactic acid bacteria.

Understanding Insulin Resistance

Insulin, a hormone produced by the pancreas, is crucial for allowing blood sugar (glucose) to enter cells for energy. Insulin resistance occurs when cells become less responsive to insulin, hindering the body’s ability to utilize carbohydrates effectively. Over time, this can lead to rising insulin levels and worsening metabolic health. According to Link, insulin resistance is essentially an inability to properly process carbohydrates.

Symptoms of insulin resistance can be subtle, but may include skin tags, dark patches on the skin, weight gain, high blood pressure, irregular menstruation, and fatigue. Diagnosis typically requires blood tests.

Navigating Bread Choices

The impact of bread on health isn’t universal. Link notes that roughly 25% of the population doesn’t experience insulin resistance and can reasonably include bread in their diet. For this group, sprouted grain bread and authentic sourdough are the most favorable choices, as they have a lower impact on blood sugar levels.

Sprouted grain bread, made from whole grains like wheat, barley, and spelt that have been soaked to sprout, offers increased nutrient content, improved digestibility, and a lower glycemic index. Popular brands include Food for Life’s Ezekiel 4:9 and Dave’s Killer Bread.

Authentic sourdough’s fermentation process unlocks minerals and creates prebiotics, supporting gut health. It also provides antioxidants and supports heart health, while boasting a lower glycemic impact and a distinct flavor profile. To ensure authenticity, look for labels indicating “natural leavening” without added acids or commercial yeast.

Expert Insight: The emphasis on natural fermentation in sourdough and the sprouting process in certain grain breads highlights a growing understanding of how food processing impacts metabolic health. These methods aim to mitigate some of the negative effects associated with refined carbohydrates.

However, Link cautions against whole-grain breads, which are often heavily processed and can cause similar blood sugar spikes to white bread.

Bread Alternatives for Insulin Resistance

For the 75% of the population experiencing insulin resistance, Link recommends reducing or eliminating traditional bread to improve metabolic health. Virta Health offers several bread substitutes, including skillet bread made with almond flour and flaxseed meal, and low-carb dinner rolls utilizing coconut flour and psyllium husk powder. Alternatives like lettuce wraps for tacos and portobello mushrooms for burger buns are also suggested.

Frequently Asked Questions

What is the glycemic index?

The glycemic index measures how quickly a food raises blood sugar levels. Sprouted grain bread has a lower glycemic index than traditional bread, meaning it causes a slower and more gradual rise in blood sugar.

What makes sourdough different from other breads?

Authentic sourdough is naturally leavened through fermentation, which unlocks nutrients, creates prebiotics, and results in a lower glycemic impact compared to breads made with commercial yeast.

Are all whole-grain breads unhealthy?

According to Theresa Link, many whole-grain breads are highly processed and can cause blood sugar and insulin spikes similar to white bread.

Considering the potential impact of bread on metabolic health, how might individuals personalize their dietary choices to align with their specific needs and health status?

Which breads are best — and the ‘healthy’ kind you should avoid