These articles give us some idea of the amount of research that has gone into determining how wheatgrass actually assists the "healing" of a broad spectrum of medical conditions and injuries. Chlorophyll has been suggested, but there is no evidence that can support this theory.
Also, no chlorophyll exists in this wheatgrass extract I have used therapeutically, and highly effectively for treating a very broad spectrum of conditions, since 1995. Numerous biological activities are involved in the wheatgrass extract healing process - in particular, ligands influencing re-activation of dysfunctional cellular receptors and "re-connecting" them to the brain.
- Chlorophyll – its therapeutic place in acute and suppurative disease (1940)
 - Wound healing and chlorophyll (1942)
 - Chlorophyll used for healing oral conditions (1943)
 - Effect of chlorophyll on skin ulcers (1943)
 - Wound healing, growth factors & chlorophyll (1943)
 - Misconceptions of chlorophyll as therapy (1944)
 - Wheatgrass jointing stage is optimum growth period (1944)
 - Chlorophyll attributed with wound healing ability (1947)
 - Chlorophyll for skin infections and burns (1948)
 - Skin ulcers improve with chlorophyll (1948)
 - Cereal grasses heal bedsores and skin ulcers (1949)
 - Burns, wounds and ulcer healing by chlorophyll (1950)
 - Chlorophyll accelerates second-degree burn healing (1950)
 - Blood elements – chlorophyllin stimulates production (1959)
 
- Anti-cancer effect and chlorophyll (1980)
 - Anti-ulcer activity from barley grass (1985)
 - Cholesterol levels reduced by barley grass (1985)
 - Anti-cancer effects of wheatgrass (1988)
 - Biological activities of chlorophyll derivatives (1988)
 - Barley grass strengthens immune system (1991)
 - Vaginal dystrophy – wheatgrass can assist (1991)
 - Anti-cancer effects of wheatgrass not due to chlorophyll (1992)
 - Anti-cancer – aflatoxins & chlorophyllin (1995)
 - Barley grass extract stimulates prolactin production (1995)
 - Chronic Achilles tendinopathy (1995)
 - Liver cancer. Chlorophyllin inhibits gene mutation (1995)
 - Antioxidants. High levels in barley grass (1997)
 - Atherosclerosis inhibited by barley grass (1998)
 - Anti-cancer effect of rye grass extract (1999)
 - Chlorophyllin protects against some cancers (1999)
 - Chlorophyllin accelerates surgical wound recovery (2000)
 - Colon cancer surgical complications reduced with wheat germ (2000)
 - Leukemia cells may be eliminated by chlorophyll (2000)
 - Chlorophyllin inhibits aflatoxin carcinogenesis (2001)
 - Rye grass extract improves HIV/AIDS patients’ quality of life (2001)
 - Wheatgrass can ease plantar fasciitis pain (2001)
 - Atherosclerosis – hypolipidemic effects of barley (2002)
 - Wheatgrass assists ulcerative colitis recovery (2002)
 - Colorectal cancer: wheat germ supportive (2003)
 - Lung cancer. Wheat germ improves quality of life (2003)
 - Blood lipids in smokers/non-smokers lowered with barley grass (2004)
 - Chemotherapy adverse effects eased by wheat germ (2004)
 - Pediatric chemotherapy. Wheat germ protects against reactions (2004)
 - Thalassemia. Wheatgrass cuts blood transfusion requirements (2004)
 - Thalassemia. Wheatgrass induces fetal hemoglobin increase (2004)
 - Fetal hemoglobin boosted by wheatgrass (2005)
 - Immunological & biochemical effects of wheat germ extract (2005)
 - Wound healing aided by Chlorophyllin (2005)
 - Antioxidant activity of wheatgrass (2006)
 - Antioxidants. High levels in wheatgrass (2006)
 - Breast cancer radiotherapy. Wheatgrass extract aids recovery (2006)
 - Rheumatoid arthritis – wheatgrass helps reduce corticosteroid dosage (2006)
 - Wheat assists oral cancer patients (2006)
 - Wheatgrass assists treatment of maxillo-facial cancer (2006)
 - Wheatgrass supports terminally ill & reduces transfusion (2006) requirements
 - Breast cancer chemotherapy. Wheatgrass protects blood status (2007)
 - Chronic myeloid leukemic cells. Positive effects by wheatgrass (2007)
 - Thalassemia. Wheatgrass assists iron chelation (2007)
 - Wheatgrass reduces transfusion requirements in thalassemia (2007)
 - Head & neck cancer. Wheatgerm improves quality of life (2008)
 - Wheat extract increases melanoma survival (2008)
 - Cancer cell death induced by wheatgrass extract (2009)
 - Cancer cell growth inhibited by wheatgrass (2009)
 - Myelodysplastic syndrome. Wheatgrass acts as iron chelator (2009)
 - Wheatgrass increases blood oxygenation for post-exercise recovery (2010)
 - Wheatgrass may assist dementia memory impairment (2010)
 - Wheatgrass may help slow dementia development (2010)
 - Anti-cancer and anti-oxidant effects of wheatgrass on human leukemia cells (2011)
 - Barley grass increases growth hormone & insulin levels (2011)
 - Breast cancer. Wheat germ can have positive effects (2011)
 - Burns – Wheatgrass assists healing (2011)
 - Soft tissue injuries – avoid ice (2011)
 - Wheatgrass assists iron chelation (2011)
 - Wheatgrass helps reduce leukemic cell proliferation (2011)
 - Wound healing effects from wheatgrass juice (2011)
 - Immune modulation positively influenced by wheatgrass (2013)
 - Wheatgrass extract heals leprosy ulcers (2014)
 - Heart damage repair with wheatgerm & echinacea (2015)
 - Wheatgrass mobilises cardiac stem cells following myocardial infarction (2016)
 - Anti-cancer & anti-oxidant effects of wheatgrass (2017)
 - Second degree burns. Wheatgrass excels over silver sulfadiazine (2018)
 - Wheatgrass reduces transfusion requirements in thalassemic children (2018)