Difference Between Mold and Yeast



HabitatTypically found in damp, dark or steam-filled areas.Very common. Can be found on fruit and berries, in the stomach of mammals and on skin, among other places.


CellMulticellular (multiple celled)Unicellular (one cell)


ShapeFilamentous fungi, ThreadlikeRound or oval in shape


AppearanceFuzzy appearance and can be an orange, green, black, brown, pink or purple in color.White and thready.


HyphaeMolds have microscopic filaments called hyphae.Yeasts do not have true hyphae. Instead they form


multicellular structures

called pseudo-hyphae.


TypesThere are 400,000 types of molds.There are 1500 types of yeasts.


SporingMold is a sporing fungiYeast is a not a sporing species of fungi.


ReproductionSexually and asexually reproduce into multi-cellular form.They reproduce mostly asexually (budding).


Asexual SporesSporangiospores and ConidiaBlastospore


Sexual SporesZygospores, Ascospores, and BasidiosporesNo Sexual Spores.


ColorfulMolds are very colorful compared to yeast.Yeast are less colorful compared to molds (colorless).


ExamplesAlternaria, Aspergillus, Fusarium, Mucor, Penicillium, Rhizopus, Trichophyton, etc.Saccharomyces cerevisiae, Cryptococcus neoformans, etc.


Energy ProductionSecrete hydrolytic enzymes that degrade biopolymers such as starch, cellulose and lignin into simpler substances that can be absorbed.Convert carbohydrates to alcohol and carbon dioxide in anaerobic through fermentation. Also obtain carbon from hexose sugars.


UsesUseful in biodegradation, food production (cheese)Making of alcoholic beverages which contain ethanol, used in baking, bioremediation, industrial ethanol production, probiotics, and food addictive or flavors.


Health HazardsCan cause allergic reactions and respiratory problems.Can cause infection in individuals with compromised immune systems.

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3 thoughts on “Difference Between Mold and Yeast”

  1. Hi, I am a medical physicist with experience in radiation protection. EM radiation does not cause yeast overgrowth. It does cause some heating if strong enough and so could contribute to creating a warm moist environment beneficial to yeast, but the strength from a phone mast 30m away would be way too low to do this. Your other sources of heat in the room would be much greater (including the heat you yourselves give out). Jeremy mentioned CRT devices (old style televisions). As well as supplying heat these are in a vented enclosed box which is never cleaned out (the TV case) so they accumulate all manner of airborne nutrients such as dust (mostly dead skin) and so could very well provide a great environment for microbial growth , particularly if the room is damp. If I had the problem you describe I would be thinking of buying a dehumidifier and increase the vacuuming dusting polishing routine. If the room is not humid then the problem is more of a medical one (ie in your body and not to do with your bedroom).

  2. Thanks for your clear answer. Can I ask you another question? Can Electro Magnetic Fields cause Candidiasis (yeast overgrowth). Our bedroom was 30 meters from a cell tower for approximately six years. It caused a number of symptoms which we were able to positively identify with wireless radiation. Later, after following an anti-candida diet for a few weeks, we had the same symptoms that we had from the EMF. Have you ever heard that wireless radiation can cause candida to overgrow? Thanks for your time.

    • Hello Lydia, I’m a PhD in Mycology and I can help you with that. While you are on the right track with that thinking, my research has found that cell tower radiation does nothing related to said overgrowth, however we have found out that the dissipate electromagnetic energy from televisions and most current generation screens does cause this overgrowth you speak of, perhaps you have a television in the house that’s regularly used – or maybe a neighbor of yours has a old CRT one, as we also discovered that the radiation from these has a stronger, more lingering effect than current generation ones.

      Kindest regards,
      Jeremy Robertson


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