Fungi are ubiquitous decomposers. Their job is to colonize whatever organic matter they can find. Unfortunately for us, we aren't exempt from their mission; fungi can infect human tissue and cause a host of health problems.
The story noted two things that are important when thinking about fungus. First, the weather is an important factor in determining whether the fungi have a good chance of coming back in force. Secondly, the best way to prevent another outbreak the following year is to rake leaves and dispose of them, not mow over or compost them.
Consider how these two things relate to humans and fungus; what is the "weather" like in your body? Are the conditions favorable for a fungal infection? Have you been on lots of antibiotics? Do you eat lots of sugar and grains or drink alcohol? Are you sedentary? These conditions might make your body favorable to conditions that would be hospitable to pathogenic fungi.
Second, the best way to prevent an outbreak is through getting rid of and avoiding contaminated material. When Doug designed the Phase 1 diet, it was designed to avoid fungi, mycotoxins and foods that would allow fungi to flourish. This is why diet is so effective at combatting fungi. Not giving them a fighting chance to begin with is a good step towards ensuring that you won't have to deal with them.
If you are struggling with health problems, consider if the "weather" in your body is favorable to fungal problems. Change to a Phase 1 diet to avoid exposure to fungi. If your problems clear up, you may have found the answer you are looking for.