Quick Navigation

Food Intake

Food intake refers to the quantitative amount of food ingested over a designated period of time, and does not necessarily reflect hunger nor appetite. Appetite suppressants should result in a reduction in food intake.

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published: Jul 5, 2013
Last Updated:

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect food intake
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b - High See all 4 studies
No significant influence on food intake in standard diabetics, although limited evidence suggest a possible role specifically in persons who self-report elevated carbohydrate cravings and inappropriate eating patterns due to urges.
grade-b - High See all 4 studies
Although there are sporadic alterations seen in food intake in studies using HMB supplementation, they are not reliable and the exact change observed changes. It is likely that there is no significant effect per se and this is due to the study population
grade-c Minor - See study
A decrease in voluntary food intake has been noted with grape seed extract ingestion, appetite per se not measured
grade-c Minor - See study
Secondary to reducing snacking (thought to be via increasing satiety from meals) saffron appears to reduce overall food intake.
grade-c Minor - See study
Stevia, in place of caloric sweeteners, has been associated with reducing whole-day food intake.
grade-c - - See study
grade-c - Very High See 2 studies
No effect on food intake.
grade-c - Very High See 2 studies
There does not appear to be a significant influence of fish oil supplementation on food intake
grade-c - - See study
Food intake appears to be unaltered following ingestion of garcinia supplements, which is different than results seen in rats
grade-c - - See study
No significant alterations in food intake are seen with garlic ingestion (assuming no taste aversion).
grade-c - - See study
No significant alterations in food intake associated with ingestion of nigella sativa.
grade-c - - See study
No significant alterations in food intake noted with Vitamin D supplementation
grade-c - - See study
Studies that happen to measure dietary intake fail to note any influence of supplemental Vitamin K
grade-d Minor - See study
The reduction in voluntary food intake noted was 16.4% of a test meal (which was 80kcal in this study) and is not likely to make significant effects during weight loss.
grade-d Minor - See study
Appears to reduce food intake, a phenomena common to all protein sources
grade-d - - See study
The inclusion of cocoa flavanols via dark chocolate does not appear to alter whole-day food intake when compared to low flavanol chocolate.
grade-d - - See study
grade-d - - See study
Failed to significantly influence food intake