Mould in Food: Are They Dangerous?
When you see Mould on food, is it safe to cut off the Mouldy part and
use the rest? That’s an interesting question. Unlike bacteria that are
one-celled, Moulds are made of many cells and can sometimes be seen with the
naked eye. Under a microscope, they look like skinny mushrooms. In many Moulds,
the body consists of:
·
Root
threads that invade the food it lives on,
·
A stalk
rising above the food, and
·
Spores
that form at the ends of the stalks.
The spores give Mould the color you see. When airborne, the spores
spread the Mould from place to place like dandelion seeds blowing across a
meadow. Moulds have branches and roots that are like very thin threads. The
roots may be difficult to see when the Mould is growing on food and may be very
deep in the food. Foods that are Mouldy may also have invisible bacteria
growing along with the Mould.
We’ve seen that some Moulds cause allergic reactions and respiratory
problems. And a few Moulds produce “mycotoxins,” poisonous substances that can
make you sick.
Are Moulds only on the surface of food? No, you only see part of the Mould
on the surface of food — gray fur on forgotten bologna, fuzzy green dots on
bread, coin-size velvety circles on fruits, and furry growth on the surface of
jellies. When a food shows heavy Mould growth, “root” threads have invaded it
deeply. In dangerous Moulds, poisonous substances are often contained in and
around these threads. In some cases, toxins may have spread throughout the
food.
Some common foodborne Moulds: Moulds most often found on meat and
poultry are Alternaria, Aspergillus, Botrytis, Cladosporium, Fusarium,
Geotrichum, Monilia, Manoscus, Mortierella, Mucor, Neurospora, Oidium, Oosproa,
Penicillium, Rhizopus and Thamnidium. These Moulds can also be found on many
other foods.
Is Aflatoxin Really Toxic? Aflatoxin is a mycotoxin and an identified cancer-causing
poison produced by certain fungi in or on foods and feeds, especially in field
corn and peanuts. They are probably the best known and most intensively
researched mycotoxins globally. The prevention of aflatoxin is one of the most
challenging toxicology issues of present time. Aflatoxins are considered
unavoidable contaminants of food and feed, even where good manufacturing practices
have been followed. If it is detected in a consignment, that consignment is
destroyed.
Mushroom Poisoning: Mushroom poisoning is caused by the consumption of raw or
cooked mushrooms, which are higher-species of fungi. Fungi are themselves
higher-species of Mould.
If you're not absolutely sure that a mushroom that you see is safe to
eat, then do not eat it. You should also avoid eating:
·
Raw
Mushrooms. Most wild mushrooms are difficult to digest when raw. If you do
find wild mushrooms that you trust, make sure to cook them well, preferably
stewed or fried.
·
Decaying
or Old Mushrooms. If you're picking mushrooms you only want whole, firm, and
fresh mushrooms with thick stems and no damage to the body from insects or
other animals. If you
think a mushroom may have
had a bite taken out of it, leave it alone.
·
Parasols.
Avoid parasol-shaped mushrooms, or mushrooms that look like wide-open umbrellas
with white rings around the stem and white, milky gills at all cost. A simple
rule is: Stay away from brightly colored or spotted mushrooms. They may be Amanitas,
mushrooms full of one of nature's deadliest poisons. Also avoid the green-spored
Lepiota, which is common to North America.
·
False Morels. Another type
of mushroom to avoid is the so-called "false morel." If you see a
mushroom with wrinkled, irregular caps that look like brain coral or saddles,
with a bottom edge that hangs free around the base, avoid it.
·
If
you're interested in foraging for mushrooms, there are a number of books you can take with you. There is no general rule of thumb for distinguishing edible mushrooms from
poisonous toadstools. The toxins that cause mushroom poisoning are produced
naturally by the fungi. Most mushrooms that cause human poisoning cannot be
made safe by cooking, canning, freezing, or any other processing.
Beneficial Food Moulds:
Moulds are used to make certain kinds of cheeses and can be on the surface of
cheese or be developed internally. Blue veined cheese such as Roquefort, blue,
Gorgonzola, and Stilton are created by the introduction of P. roqueforti or
Penicillium roqueforti spores. Brie and Camembert have white surface Moulds.
Other cheeses have both an internal and a surface Mould. The Moulds used to manufacture
these cheeses are safe to eat.
Examine food well before you buy it. Check food in glass jars, look at
the stem areas on fresh produce, and avoid bruised produce. Fresh meat and
poultry are usually Mould free, but cured and cooked meats may not be. Examine
them carefully. Exceptions: Some salamis — San Francisco, Italian, and Eastern
European types — have a characteristic thin, white Mould coating which is safe
to consume; however, they shouldn’t show any other Mould. Dry-cured country
hams normally have surface Mould that must be scrubbed off before cooking.
Protecting Food from Mould
·
When
serving food, keep it covered to prevent exposure to Mould spores in the air.
Use plastic wrap to cover foods you want to stay moist — fresh or cut fruits
and vegetables, and green and mixed salads.
·
Empty
opened cans of perishable foods into clean storage containers and refrigerate
them promptly.
·
Don’t
leave any perishables out of the refrigerator more than 2 hours.
·
Use
leftovers within 3 to 4 days so Mould doesn’t have a chance to grow.
Handling Mouldy Food
Buying small amounts and using food quickly can help prevent Mould
growth. When you see Mouldy food:
o
Don’t
sniff the Mouldy item. This can cause respiratory trouble.
o
If food
is covered with Mould, discard it. Put it into a small paper bag or wrap it in
plastic and dispose in a covered trash can that children and animals can’t get
into.
o
Clean
the refrigerator or pantry at the spot where the food was stored.
o
Check
nearby items the Mouldy food might have touched. Mould spreads quickly in
fruits and vegetables.
MOULDY
FOOD: WHEN TO USE AND WHEN TO DISCARD
FOOD
|
HANDLING
|
REASON
|
Luncheon
meats, bacon, or hot dogs
|
Discard
|
Foods with
high moisture content can be contaminated below the surface. Mouldy foods may
also have bacteria growing along with the Mould.
|
Hard salami
and dry-cured country hams
|
Use. Scrub Mould
off surface.
|
It is normal
for these shelf-stable products to have surface Mould.
|
Cooked
leftover meat and poultry
|
Discard
|
Foods with
high moisture content can be contaminated below the surface. Mouldy foods may
also have bacteria growing along with the Mould.
|
Cooked
casseroles
|
Discard
|
Foods with
high moisture content can be contaminated below the surface. Mouldy foods may
also have bacteria growing along with the Mould.
|
Cooked grain
and pasta
|
Discard
|
Foods with
high moisture content can be contaminated below the surface. Mouldy foods may
also have bacteria growing along with the Mould.
|
Hard cheese
(not cheese where Mould is part of the processing)
|
Use. Cut off
at least 1 inch around and below the Mould spot (keep the knife out of the Mould
itself so it will not cross-contaminate other parts of the cheese). After
trimming off the Mould, re-cover the cheese in fresh wrap.
|
Mould
generally cannot penetrate deep into the product.
|
Cheese made
with Mould (such as Roquefort, blue, Gorgonzola, Stilton, Brie, Camembert)
|
Discard soft
cheeses such as Brie and Camembert if they contain Moulds that are not a part
of the manufacturing process. If surface Mould is on hard cheeses such as
Gorgonzola and Stilton, cut off Mould at least 1 inch around and below the Mould
spot and handle like hard cheese (above).
|
Moulds that
are not a part of the manufacturing process can be dangerous.
|
Soft cheese (such
as cottage, cream cheese, Neufchatel, chevre, Bel Paese, etc.). Crumbled,
shredded, and sliced cheeses (all types)
|
Discard
|
Foods with
high moisture content can be contaminated below the surface. Shredded,
sliced, or crumbled cheese can be contaminated by the cutting instrument. Mouldy
soft cheese can also have bacteria growing along with the Mould.
|
Yogurt and
sour cream
|
Discard
|
Foods with
high moisture content can be contaminated below the surface. Mouldy foods may
also have bacteria growing along with the Mould.
|
Jams and jellies
|
Discard
|
The Mould
could be producing a mycotoxin. Microbiologists recommend against scooping
out the Mould and using the remaining condiment.
|
Fruits and
vegetables, FIRM (such as cabbage, bell peppers, carrots, etc.)
|
Use. Cut off
at least 1 inch around and below the Mould spot (keep the knife out of the Mould
itself so it will not cross-contaminate other parts of the produce).
|
Small Mould
spots can be cut off FIRM fruits and vegetables with low moisture content.
It’s difficult for Mould to penetrate dense foods.
|
Fruits and
vegetables, SOFT (such as cucumbers, peaches, tomatoes, etc.)
|
Discard
|
SOFT Fruits
and vegetables with high moisture content can be contaminated below the
surface.
|
Bread and
baked goods
|
Discard
|
Porous foods
can be contaminated below the surface.
|
Peanut
butter, legumes and nuts
|
Discard
|
Foods
processed without preservatives are at high risk for Mould.
|
Chart 2
Illnesses Caused by Mould and Their Treatment
Asthma
It has not been proved that Mould causes Asthma. Recent studies have
suggested a potential link of early Mould exposure to development of asthma in
some children, particularly among children who may be genetically susceptible
to asthma development, and that selected interventions that improve housing
conditions can reduce morbidity from asthma and respiratory allergies, but more
research is needed in this regard.
Things that make asthma worse are called triggers and inhaling Mould
spores is a common asthmatic trigger. So, when your asthma worsens due to Mould,
you are said to have a Mould allergy to asthma. Of the many types of Mould, Alternaria,
a common outdoor Mould, is associated with severe asthma.
Actions you can take
·
If Mould
is a problem in your home, you need to clean up the Mould and eliminate sources
of moisture.
·
If you
see Mould on hard surfaces, clean it up with soap and water. Let the area dry
completely.
·
Use
exhaust fans or open a window in the bathroom and kitchen when showering,
cooking or washing dishes.
·
Fix
water leaks as soon as possible to keep Mould from growing.
·
Dry
damp or wet things completely within one to two days to keep Mould from growing.
·
Maintain
low indoor humidity, ideally between 30-50% relative humidity. Humidity levels
can be measured by hygrometers, which are available at local hardware stores.
Mould Exposure Treatment Options
For people sensitive to Moulds, exposure to Moulds can cause symptoms such
as nasal stuffiness, eye irritation, wheezing, or skin irritation. Some people,
such as those with serious allergies to Moulds, may have more severe reactions.
Severe reactions may occur among workers exposed to large amounts of Moulds in
occupational settings, such as farmers working around Mouldy hay. Severe
reactions may include fever and shortness of breath. Some people with chronic
lung illnesses, such as obstructive lung disease, may develop Mould infections
in their lungs.
In 2004 the Institute of Medicine (IOM) found there was sufficient
evidence to link indoor exposure to Mould with upper respiratory tract
symptoms, cough, and wheeze in otherwise healthy people; with asthma symptoms
in people with asthma; and with hypersensitivity pneumonitis in individuals
susceptible to that immune-mediated condition. The IOM also found limited or
suggestive evidence linking indoor Mould exposure and respiratory illness in
otherwise healthy children.
There are a wide variety of treatment options for Mould exposure,
starting with drug alleviation. Drug options include:
·
Cholestyramine
(CSM) is commonly prescribed for Mould exposure. This is a bile acid
sequestrant, which binds bile in the gastrointestinal tract to prevent its
reabsorption. It also works as a mycotoxin binding agent. CSM can be compounded
to contain no sugar. (One pharmacy which does this is Hopkinton Drug.) It is
important to take CSM two hours before or after any nutritional supplements, as
it will bind these as well.
·
Activated
charcoal and bentonite clay are two natural binding agents and often taken with
CSM.
·
Antifungal
drugs. These include the plyenes, the triazoles and imidazoles, allylamines and
more. Nystatin is an example of an antifungal drug. Antifungal drugs can be
taken in nasal spray form.
·
Low-dose
Naltrexone. Naltrexone is an opioid receptor antagonist. Low-dose Naltrexone
(LDN) has been shown to be effective in treating immunologically related
disorders (ibid).
What Type Of Doctor Should I See Concerning Mould Exposure?
You should first consult a family or general health care provider who
will decide whether you need referral to a specialist. Such specialists might
include an allergist who treats patients with Mould allergies or an infectious
disease physician who treats Mould infections. If an infection is in the lungs,
a pulmonary physician might be recommended. Patients who have been exposed to Moulds
in their workplace may be referred to an occupational physician.
The level of knowledge regarding toxic Mould varies. You might have to check
online for physicians who
can attend to you.
Natural Options
(often integrated with conventional medical therapies):
·
CholestePure
is often suggested as a natural option for those who cannot tolerate or want to
avoid cholestyramine.
·
Garlic,
oil of oregano, pau d'arco, olive leaf extract, caprylic acid (found in
coconuts), barberry, and grapefruit seed extract are some of the natural
antifungals.
Skin Remedies
·
Rashes
often appear during Mould exposure, as well as during the detox process.
·
Ketoconazole
cream is a topical antifungal cream. Other skin remedies include tea tree oil,
coconut oil, grapeseed
oil, and grapefruit seed extract (diluted).
·
Charcoal
soap can be used as a detox agent. It can be combined with ketaconazole shampoo
lather.
Antifungal Diet: One goal of an antifungal diet is to
starve the fungus, thereby halting the cycle that often occurs. Sugars and
processed carbohydrates feed the fungus. A helpful comparison of various
antifungal diets, including a downloadable chart is available online. Select a diet after consulting your
doctor.
Fungi and yeasts can become parasitic organisms on and inside our body, causing health
problems that can be difficult to diagnose. Often and unknowingly, we feed
these parasites via our diet. Fungi crave sugar, and if you have a fungal
infection, their cravings often become your cravings. Sugar does not simply
come in the form of candy, soda and other obvious “junk foods”; the
carbohydrates from grains, potatoes, corn and corn products, certain fruits,
breads, pasta, alcohol and other staples of our standard diet are just as
effective at feeding a parasitic fungal organism.
When beginning an antifungal diet, some
might experience an exacerbation of symptoms, initially, and some might
experience flu-like symptoms or other intense discomfort. This reaction is
known as a Herxheimer reaction, and it could be the result of fungal die-off.
As fungi begin to die and their poisonous byproducts begin flushing out of your
system, it can cause discomfort, symptoms of being sick or an initial worsening
of existing problems. This is temporary, and somewhat ironically, it may be a
good sign that you’ve taken the first step towards better health––ridding your
body of a health-destroying, parasitic organism.
For others, results may not be so quick or
so dramatic. For those whose results come more slowly: Please give the diet
time to work. Your health problems likely did not develop overnight, and any
solution will not likely resolve your problems overnight, either.
While the idea of abstaining from their
favorite foods does not sound particularly appealing to most people, their mind
is often changed by how good they feel after following the diet for 30 or 60
days. And, people generally find their tastes change; after eliminating sugar
for a month, the ice-cream, soda or candy that many crave now taste
nauseatingly sweet.
Most dairy products contain a sugar called
lactose. Avoiding lactose, like any other kind of sugar, is key to a diet.
Pathogenic fungi necessitate sugar to survive, and they aren’t picky about
where that sugar comes from. Avoiding all kinds of sugar is recommended, even
sugar from dairy. This includes milk, cream and cheeses. Instead, opt for plain,
organic (preferably derived from grass-fed cows) yogurt.
Brain Retraining: The entire body is impacted by Mould exposure. Digestive tracts are hit hard, and so are
endocrine systems. The brain is invariably involved. Brain retraining programs
often play a part in recovery.
Alternative Health Options: A wide variety of alternative health options
exist. Practitioners may not be familiar with the specifics of Mould exposure
but can address the need to detox. These are a few of the numerous options
available: orthospinology (a chiropractic specialty), ONDAMED,
acupuncture, oxygen chamber therapy, IV therapies, chelation therapies, far
infrared sauna, and much more.