A low carb/no sugar diet is not Heather's IBS diet..or am I wrong?
The antifungal diet I went on allowed me choices of meat/fish/poultry/eggs, most veggies (no corn,mushrooms, potatoes), berries, green apples, organic plain yogurt and Stevia sweetener. More foods were introduced after 2 weeks, for me. It is not a life sentence of eating. It is a period of time to get rid of the toxins/fungus in your body. As Carolyn indicated, often a good telltale sign is if you have a die-off reaction within days of beginning- a Herxheimer response, where you will feel worse before feeling better- flu-like symptoms, aches, pains. fatigue, D, etc. Everyone is different. I also took natural antifungals because diet is often not enough. I took caprylic acid and rotated that with olive leaf extract. Probiotics are also HIGHLY recommended, whether you have gut issues, or not. I feel they are also key to my getting better.
For me, I got well again within 2 weeks. That was the only change I made to my life, so for me it was cause/effect. It was hard at the beginning, but I started feeling so much better, I got a high from keeping on the diet. I now can tolerate foods that would have killed me before, like lettuce, onions, tomatoes. I still monitor what goes into my mouth. I can't tolerate forms of yeast (tummy rumblings, gas and bloating soon follows), which is in a lot of processed foods these days, and too much white processed/cane sugar, and HFCS products don't sit well with me. I eat bread, but non-wheat and yeast-free, which is really not that bad. Again, everyone is different.