Study: Guava Juice May Lower Anemia Risk Among Women

Guava Juice May Boost Hemoglobin in Women

For nearly half of all pregnant women worldwide, anemia is a daily reality. The condition, in which the body lacks enough healthy red blood cells to carry oxygen, is especially widespread in Indonesia, where nearly half of pregnant women and close to a third of teenage girls are affected, according to national health data cited in the research.

Severe anemia during pregnancy can nearly double a woman’s risk of dying during or after childbirth. An analysis of 17 studies now suggests that guava juice, used alongside standard iron therapy, could be a practical tool in addressing this persistent health problem.

Guava is a tropical fruit grown across Asia, Latin America, and other warm-weather regions. It is packed with vitamin C, which helps the body absorb iron more effectively by converting it into a form the gut can take in. The fruit also contains folic acid and other nutrients that support red blood cell production.

Researchers set out to determine whether drinking guava juice could measurably raise hemoglobin levels among Indonesian women, typically when taken alongside iron supplements. Published in BMJ Nutrition, Prevention & Health, the results suggest the answer is yes.

17 Studies, 726 Women, All From Indonesia

Researchers searched several medical databases for studies on guava juice and hemoglobin in Indonesian females and identified 17 that met their criteria, all conducted in Indonesia and published between 2019 and 2024. Altogether, those studies included 726 female participants, split between pregnant women and adolescent girls. Fifteen of the 17 used study designs that fell short of the gold standard, with only two qualifying as full randomized controlled trials. Twelve studies provided enough data to be combined into a formal statistical analysis.

Individual study sizes ranged from 15 to 230 participants, and most studies took place in urban settings. In the majority of cases, participants received guava juice in combination with iron supplements rather than guava juice on its own.

Guava Juice Plus Iron Outperformed Iron Supplements Alone

Pooling data from those 12 studies, representing 265 participants, researchers found that women who consumed guava juice showed an average hemoglobin increase of 1.71 grams per deciliter of blood. The team called this clinically meaningful, writing that an increase of this size “may shift individuals from mild or moderate anaemia to non-anaemic categories, improving fatigue, cognitive function and productivity outcomes.”

Breaking the data down by group, teenage girls saw an average hemoglobin increase of 1.52 g/dL, while pregnant women saw a larger average increase of 1.84 g/dL. That said, the size of the benefit varied widely from study to study, so the exact effect remains uncertain.

A separate look at five studies, involving 102 participants, compared guava juice plus iron supplements against iron supplements alone. Those receiving guava juice alongside iron came out ahead by an average of 1.29 g/dL, a difference the researchers described as statistically significant. Juice amounts across all studies ranged from 100 to 300 milliliters per day and intervention lengths varied, which partly explains why results were not uniform.

All Studies Came From Indonesia, and Most Lacked Rigorous Design

Every study included came from Indonesia, which means the findings may not automatically apply to women elsewhere with different diets, health conditions, or access to care. Heavy reliance on non-randomized study designs makes it harder to establish that guava juice itself caused the improvements. Several studies did not report how long the intervention lasted or exactly how much juice was consumed, making it difficult to pin down an ideal dose or duration. Larger, more rigorous research across multiple countries is needed before guava juice can be written into public health guidelines.

Still, the findings point toward something worth taking seriously. Anemia is deeply entrenched in many lower-income countries, and access to iron supplements is often limited by chronic supply problems and the reality that people do not always take the pills as directed. Guava juice is affordable across many tropical regions, widely familiar, and already woven into the food culture of many affected communities.

Guava Juice Could Complement Prenatal Care and School Nutrition Programs

Researchers argue that guava juice could slot into school nutrition programs, prenatal care visits, or community health initiatives in places where the fruit is widely available. They also note this is the first review to systematically examine guava juice’s effects specifically in female populations, which gives future researchers a cleaner foundation to build on.

Whether a daily glass of guava juice can meaningfully move the needle on anemia rates will ultimately take stronger evidence to confirm. But for a condition that has proven stubbornly difficult and expensive to address, a locally grown, affordable fruit that may amplify the effect of existing treatments is worth investigating seriously.

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Disclaimer: This study is a systematic review and meta-analysis of existing research, not a clinical trial. The findings are based primarily on studies conducted in Indonesia and have not been validated across other populations. Guava juice should not be used as a substitute for medical treatment for anemia. Anyone concerned about anemia or nutritional deficiencies should consult a qualified healthcare provider.

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