Could a Fish-Based pill fix iron deficiency? new study investigates

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Provision of signed and dated informed consent form * Stated willingness and demonstrated ability to comply with all study procedures, as well as availability for the duration of the study * Lives within 100 miles of a NRI study site * Biological sex of woman; gender identification of female * Aged 21 to 42, inclusive * In luteal phase of menstrual cycle * Either low levels of iron or mild-moderate iron-deficiency (defined as screening hemoglobin of 12.0-14.0 g/dL or 8.0-11.9 g/dL, respectively) * Good general health as evidenced by medical history and screening metabolic panel and complete blood count (GMP \& CBC) * For females of reproductive potential: use of highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation and for an additional month after the end of the study * Agreement to adhere to Lifestyle Considerations throughout study duration Exclusion Criteria: * A positive medical history of heart disease/cardiovascular disease, high blood pressure (140/90 or greater mmHg), kidney disease, hepatic impairment or disease, Type I or Type II diabetes, Irritable bowel disease/Irritable bowel syndrome (IBD/IBS), ulcerative colitis (UC), Crohn's disease or any other medical condition or diagnosis that the PI would deem exclusionary * A positive surgical medical history for any procedure that may impact iron status (i.e., gastric bypass, gastric pull-up (Roux-en-Y), short bowel syndrome, etc * A positive medical history of unstable thyroid disease, previously diagnosed major affective disorder, psychiatric disorder that required hospitalization in the prior year, immune disorder (i.e., HIV/AIDS), a history of cancer (except localized skin cancer without metastases or in situ cervical cancer within five years before the screening visit. * A positive medical history of any gastrointestinal disease or illness * A positive history of any other gastrointestinal surgery that is known to alter or impact the digestion absorption of nutrients and or fluids * History of hospitalization or in-patient or out-patient treatment for alcohol dependence or drug addiction within the past two years * History of hospitalization or in-patient treatment for depression or any related condition within the past five years * Severe iron deficiency (defined as screening hemoglobin \<8.0) * Pregnancy, trying to conceive, or breastfeeding * Currently smokes or vapes (i.e., tobacco, flavored items, marijuana, etc.) or has in the past year * Known allergic reactions to any components of the intervention * Positive COVID-19 test within 30 days of the study period * Obese, defined as BMI \>35 * Recent dramatic weight changes (10% change in body weight in the last 6 months) * Existing usage of an iron supplement in any form * Introducing a new investigational drug or other intervention within 60 days before the start of the study