Should You Trust Food Expiration Dates? A Practical Guide to What’s Still Safe to Eat
- 3 hours ago
- 4 min read
Most of us have faced the same quiet dilemma: a container in the fridge, slightly past its date, staring back as a question mark. Is it still safe—or not worth the risk?
Food expiration dates are often treated as hard rules when in fact, most foods and many other consumer products in the U.S. aren’t required by federal law to have “expiration” or “best by” dates. When these dates do appear, they’re usually added voluntarily by manufacturers to indicate when the product is likely to be at its best in terms of taste, texture, and overall quality—not necessarily when it becomes unsafe to use.
What Expiration Dates Actually Mean
As noted, despite how they appear, most dates on food packaging are not safety deadlines. According to the FDA and the Food and Safety Organization, here is how they define the most common expiration terms found on food in the U.S.:
“Sell By”: For retailers, not consumers—indicates how long a store should display the product.
“Best If Used By” / “Best Before”: Refers to peak quality (flavor, texture), not safety.
“Use By”: Often still about quality—except for infant formula, where it is a true safety cutoff.
The U.S. Department of Agriculture (USDA) is explicit. "If the date passes during home storage, a product should still be safe....until spoilage is evident."
Why This Matters
Waste, Cost, and Misunderstanding
A 2025 survey of consumers found that 88% of households discard food near or past the label date each year, costing the economy approximately $7 billion. Between 30 and 40% of the U.S. food supply is wasted, much of which is still edible. In round figures, this is 3 billion pounds of food.
Not to Mention the Environment
Food loss and waste has significant environmental impacts, primarily by wasting resources and contributing to climate change. When food is discarded, all the inputs used to produce it—such as water, energy, fertilizer, and land—are also wasted, placing unnecessary strain on natural resources.
It is a major source of greenhouse gas emissions. Food production, transportation, and handling generate large amounts of carbon dioxide (CO₂), and when wasted food decomposes in landfills, it produces methane, a far more potent greenhouse gas. In the U.S., food loss and waste account for about 170 million metric tons of CO₂-equivalent emissions annually (excluding landfill methane), comparable to emissions from 42 coal-fired power plants. Food waste is also the largest component of municipal waste sent to landfills and incinerators.
Additionally, food waste intensifies climate change, which in turn disrupts agriculture and supply chains through extreme weather events, creating a feedback loop. Reducing food waste would conserve natural resources, lower greenhouse gas emissions, and help mitigate climate change.
When Food Is Still Safe After the Expiration Date
In many cases, food remains safe beyond its labeled date if handled properly. Generally low-risk food categories include dry pantry goods such as rice, pasta, and crackers; canned goods (if undamaged); and refrigerated items that show no signs of spoilage.
So what's one true test in checking for spoilage? According to Harvard food policy expert Emily Broad Leib, "If something smells off, you know."
Spoilage bacteria (which cause bad smells or textures) are different from harmful pathogens. They are microorganisms that cause food to deteriorate, affecting its appearance, smell, texture and taste. Pathogenic bacteria, such as Salmonella, are invisible and may be present even when food appears safe.
Proper storage—especially refrigeration below 40°F— helps prevent the growth of both types of bacteria.
When You Should Be More Cautious
Not all foods are equal. Some carry higher risks of spoiling and allowing harmful pathogens to spread and should be treated more carefully.
Higher-risk foods include:
Raw meat and poultry
Raw fish and seafood
Deli meats
Unpasteurized dairy products
Pre-packaged salads
Other foods that spoil faster and pose a higher risk of serious illness include leftovers (best consumed within 3-5 days), foods eaten without cooking (like sushi, steak tartar, and even caviar), and items stored improperly (e.g., left out too long).
Practical Ways to Judge Food Safety
Rather than relying solely on dates or even the smell test, use a combination of methods:
1. The smell and visual test
Off odors, mold, slime, or unusual texture = discard
Clear appearance and normal smell = likely safe
2. Storage history
Was it kept cold (below 40°F)?
Was it left out for more than 2 hours?
3. Cooking as a safety step
Heat can destroy many harmful bacteria when food is cooked thoroughly
4. Use reliable tools
USDA’s FoodKeeper app provides storage timelines (available through iOS and Google Play Stores)
Food safety guides that offer product-specific recommendations
The Bottom Line
Expiration dates are best understood as guidelines for quality, not strict safety rules—with a few key exceptions.
They can be useful reference points, but they shouldn’t be the only factor in deciding whether to keep or discard food. A more practical approach combines:
Basic food safety knowledge
Proper storage habits
Sensory judgment
Taken together, these tools offer a more reliable—and less wasteful—way to decide what’s still good to eat.
Sources: The Atlantic, U.S. Food and Drug Administration, Food Safety and Inspection Service, Real Simple, Serious Eats, Penn State Extension, CAES Field Report