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A Good Housekeeping report says food safety expert Darin Detwiler recommends throwing away or composting a whole loaf if any bread is moldy. Mold can spread through soft, porous bread in microscopic threads, so cutting away the visible spot does not reliably remove contamination.
If mold appears on one slice of bread, food safety expert Darin Detwiler advises discarding the whole loaf, rather than cutting away the visible patch. The guidance, reported by Good Housekeeping, is based on the risk that mold can extend beyond what is visible through the soft, porous bread.
Visible mold is not necessarily the full extent of contamination. Detwiler, a food safety expert and professor emeritus of food regulatory affairs, told Good Housekeeping that mold sends out microscopic threads that can travel beneath the surface. They are not visible to the naked eye, so a person cannot reliably tell whether the remaining bread is unaffected.
“If we see [mold], it’s like the tip-of-the-iceberg sort of thing,” Detwiler said. He added that cutting away a spot does not guarantee that contamination has been removed. The same advice applies to pre-sliced bread: if one slice is moldy, the report says to discard the loaf rather than keep the slices that look clean.
Detwiler recommends putting moldy bread in the trash or compost. The report says consuming or inhaling mold may cause health problems, including nausea, vomiting and breathing problems, and says people who are immunocompromised should not take the risk. It does not provide a clinical assessment of individual exposure or symptoms.
Why One Moldy Slice Matters
The practical issue is that appearance is not a reliable safety test for soft bread. Removing the visible patch may leave hidden mold threads elsewhere in the loaf, and the report says those threads cannot be checked by sight. Discarding the loaf avoids relying on an uncertain cut line.
The recommendation also helps distinguish bread from some harder foods, where people may be familiar with trimming a moldy portion. Detwiler’s advice, as reported by Good Housekeeping, is specifically that this approach is not dependable for soft, porous bread. The report does not offer a broader rule for every food or every type of mold.
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How Mold Can Spread Through Bread
The Good Housekeeping report explains that mold can produce substances called mycotoxins and can send microscopic threads into food. Detwiler says those threads move more readily through soft, porous foods such as bread. The visible fuzzy growth may therefore not show the full area affected.
For bread that has not developed mold, Detwiler’s storage advice is to keep it as dry as possible. A breadbox or paper bag allows air to circulate and can help prevent moisture buildup, according to the report. For longer storage, the report recommends the freezer; it cautions that refrigeration can make bread go stale faster than keeping it at room temperature.
““If we see [mold], it’s like the tip-of-the-iceberg sort of thing.””
— Darin Detwiler, food safety expert and professor emeritus of food regulatory affairs, quoted by Good Housekeeping
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What the Report Does Not Establish
The source does not give a specific mold species, a test of how far contamination travels in a particular loaf, or a threshold for how much visible mold would make bread unsafe. It also does not quantify the likelihood or severity of illness after a given exposure. Its advice is a precautionary recommendation attributed to Detwiler, not a case-by-case diagnosis.
The report does not detail how long bread can be kept in a breadbox, paper bag or freezer, or give storage temperatures and times. It also does not address what someone should do after eating moldy bread or provide medical guidance for symptoms. Readers concerned about exposure or illness would need advice from a qualified health professional.
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Storing the Next Loaf Safely
The immediate step for a loaf with visible mold is to discard or compost it, rather than salvaging apparently clean slices. To reduce moisture during routine storage, Detwiler recommends a breadbox or paper bag. If bread needs to be kept longer, the report points to the freezer instead of the refrigerator.
The source does not announce a new regulation, recall or further investigation. Its takeaway is household guidance: check bread for visible mold, but do not treat the absence of mold on an individual slice as proof that the rest of a loaf is safe once mold has appeared elsewhere.
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Key Questions
Should I throw away the whole loaf if one slice has mold?
Yes. The Good Housekeeping report says food safety expert Darin Detwiler recommends discarding the whole loaf, because mold may spread through bread in threads that are too small to see.
Can I cut off the moldy part and eat the rest?
Detwiler says cutting away the visible patch does not guarantee that contamination has been removed. The report advises against salvaging the remaining bread.
How should I store bread to help prevent mold?
Detwiler recommends keeping bread dry in a breadbox or paper bag, where air can circulate. The report says the freezer is preferable for longer storage and that the refrigerator can make bread stale faster.
What symptoms does the report associate with mold exposure?
The report lists nausea, vomiting and breathing problems among possible health problems from consuming or inhaling mold. It does not assess individual exposure; anyone worried about symptoms should seek advice from a health professional.
Source: rss
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