N/A
N=77
Intermittent Fasting and a No-Sugar Diet for Long COVID Symptoms
Long Covid19 · Long COVID
Bottom Line
View on ClinicalTrials.gov: NCT06214455 ↗Enrolled (actual)
77
Serious AEs
0.9%
Results posted
May 2026
Primary outcome: Primary: Change in LC-Score, Per Treatment — -10.2; -2.8 Scores on a Scale
Study Design & Population
- Study type
- Interventional
- Phase
- N/A
- Interventions
- Low sugar diet and 10-12 hour eating window (Other); Low sugar diet, 8 hour eating window and fasting (Other)
- Age
- Adult, Older Adult · 19+ yrs
- Sex
- All
- Sponsor
- Pacific Northwest University of Health Sciences
- Primary completion
- Jul 2024
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Change in LC-Score, Per Treatment |
-10.2; -2.8 | — |
| PRIMARY Change in Number of Long COVID Symptoms, Per Treatment |
-5.0; -1.4 | — |
| SECONDARY Change in LC-Score, Overall |
-19.6 | — |
| SECONDARY Change in Number of Long COVID Symptoms, Overall |
-8.3 | — |
| SECONDARY Serious Adverse Events |
1; 1 | — |
Summary
This cross-over study will assess a no added sugar diet, a restricted daily eating window, and one or two full day water fasts to determine if there is an effect on self-reported symptoms of Long Covid (PASC).
Eligibility Criteria
Inclusion Criteria
- Adult (18-69 years old)
- Five or more common Long Covid symptoms
- Free from fever > 100F and known bacterial and parasitic infections
- Must indicate willingness to limit certain supplements and report all medications.
- Must indicate willingness to make significant dietary changes - and limit daily eating to an 8 or 10 hour window.
- Must indicate willingness to attempt 36 hr or 60 hr water fasts each week for 4 weeks.
- Have a valid email address and phone number
- Reside in the United States
- Be able to read and to communicate in English
- Must indicate willingness to avoid "extra" supplements such as Fish Yes Oil, Cod liver Oil, Krill Oil, MCT oil, Coconut Oil, Tumeric/Curcumin, Berberine, Quercetin (> 500 mg), Red Yeast Rice, French Marine Bark extract, Red Sage, Ginko biloba, Oregano Oil, Peppermint Oil, Black seed oil, Cinnamon bark extract, Elderberry, Stinging Nettle, Milk Thistle, Monolaurin, Vendicinals 9, Tollovid, QuadraMune and all Probiotics.
- Must indicate willingness to avoid certain nutraceuticals such as Zinc (more than 25 mg), Arginine, Glutamine, Palmitoylethanolamide (PEA), Alpha Lipoic Acid, L Carnitine and Taurine during the study period.
- Must indicate willingness to avoid longevity supplements such as NAD+, Niacin, NMN, Nicotinamide Riboside, Spermidine and Fisetin during the study period.
- Must indicate willingness to halt Olive oil consumption greater than 1 tsp daily during the study period.
Exclusion Criteria
- Likely COVID-19 or SARS-CoV-2 infection 10 mg)
- Anti-inflammatories or immunosuppressants such as Steroids, Low dose Naltrexone (LDN), Maraviroc, Remicade/Infliximab or Colchicine that cannot be halted during the study period
- Metformin, Ivermectin, or peptides such as BCP-157 that cannot be halted during the study period
Data sourced from ClinicalTrials.gov (NCT06214455). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.