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Fasting clinical trials

The registry lists 392 studies for Fasting across more than 10 countries. 63 are recruiting or about to start. 223 of them are mainly about Fasting (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its narrower condition Intermittent Fasting too: 684 studies, 151 open.

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Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

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Status

Completed
261
Recruiting
45
Status unknown
41
Not yet recruiting
13
Terminated
11
Active, not recruiting
9

Phase

Phase 1
82
Phase 2
12
Phase 4
11
Early Phase 1
5
Phase 3
4

Where

United States
95
Germany
30
Canada
25
India
23
Turkey
16
United Kingdom
14

Who runs them

Par Pharmaceutical, Inc. (19) · Charite University, Berlin, Germany (15) · Dr. Reddy's Laboratories Limited (12) · IPCA Laboratories Ltd. (12) · Beth Israel Deaconess Medical Center (6) · University of California, San Diego (5) · University of Aarhus (5) · University of Monastir (5)

What is being tested here

Drugs under test in Fasting studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Maltodextrin203
Carbohydrates105
Sulfadoxine101
Orforglipron111
Estradiol101
Cetrorelix101
Metformin003
Doxycycline003
Ondansetron003
Dexmethylphenidate002

Drug classes tested here GLP-1 receptor agonists 1 open · Beta blockers 4 · COX-2 inhibitors 4 · Stimulants 3 · Corticosteroids 3

Coming up

1phase 3 study under way
20studies finish main data collection within a year1 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 45 Fasting studies recruiting now, 15 (33%) set no upper age limit and 24 (53%) stop at 75 or younger. 7 (16%) take children under 18. 6 (13%) are for women only and 2 (4%) for men only; 20 (44%) take healthy volunteers.

Recruiting studies that take each age, of 45
AgeWomenMen
105 (11%)5 (11%)
1834 (76%)32 (71%)
3038 (84%)35 (78%)
4035 (78%)32 (71%)
5033 (73%)29 (64%)
6530 (67%)27 (60%)
7523 (51%)21 (47%)
8518 (40%)18 (40%)

Across all 392 studies, recruiting or not: 64% stop at 75 or younger and 53% at 65; 11% take children; 8% are for women only and 9% for men only; 58% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Fasting studies take

Of 18 phase 1 interventional studies under Fasting, half reached primary completion within 1 month of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 11 mo0–3 · 18 studies——
Interventional, no phase18 mo6–40 · 149 studies—19 mo6–40 · 144 studies
Observational17 mo6–34 · 48 studies—17 mo7–48 · 46 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 11, 2026.

Newly registered1

Studies

Recruiting first, then most recently updated. Showing 50 of 392. Browse all 392 → or search them.