Introduction

Ginger, the rhizome of Zingiber officinale Roscoe (Zingiberaceae), is a plant largely distributed across the tropics of Asia, Africa, America and Australia. “Zingiberis” is the Greek word derived from the Sanskrit word "shringravera" which means "shaped like a deer's antler". For over 2000 years this plant has the unique distinction of being classified as a culinary herb for food and medicine but recently gained popularity as a dietary supplement. Due to the presence of volatile oils, Ginger has a pungent flavour and odour. These volatile oils have antipyretic, analgesic and sedative physiological effects. It is also a good source of phytochemicals, bioactive compounds and antioxidants, which have the potential to protect you against several diseases. Besides ginger, rhizome is rich in fibre and proteins. Even the herb possesses a multitude of bioactivities ranging from antibacterial to anticancer agents. Epidemiological and animal studies have confirmed its bioactivity.¹

Importance of Digestive Health

The digestive system is made up of organs including the gastrointestinal tract, liver, pancreas and gallbladder. The function of the digestive system is to break down foods and liquids into basic chemical components which then absorb nutrients to provide energy to build and repair cells of the body. So the digestive system plays a major role in maintaining your overall health. So without proper digestive health, the food you eat will not provide proper nutrition to your body, which can negatively impact your health and wellbeing. In addition, your body will experience lots of uncomfortable symptoms like abdominal pain, bloating, indigestion etc. 

According to scientists, the brain is often considered a part of the digestive system, serves as a communication centre for the brain, and ensures many important health functions in the body. Additionally, the gut plays a key role in regulating our stress levels and our state of mind, not only because the gut is filled with nerve cells that receive and transmit information to the brain, but it also produces more than 90% of the serotonin present in the body, the hormone that regulates our mood. Whenever your digestive system does not work properly, it results in low levels of neurotransmitter production such as serotonin. Which will be responsible for different mental health problems like anxiety, depression etc. So proper digestive health is very important for the overall well-being of any individual.³

Exploring Ginger's Impact on Digestive Health

Ginger is a very helpful and natural remedy for digestive health. If you are facing the problem of burning in your chest, ginger will help you with heartburn, as it is believed to protect the gastric lining and speed up the movement of food through the gastrointestinal tract, reducing stomach acid from flowing back up the oesophagus after meals.⁴ At some point, due to overeating or food intolerance, you will experience bloating. Indigestion is one of the top reasons for bloating, and ginger has the ability to reduce indigestion. If you are facing abdominal pain, cramping and other gastrointestinal problems, ginger may ease the symptoms of bloating, cramping and gas. While natural remedies such as ginger can be helpful for minor and fleeting bouts of nausea and an upset stomach, they won’t be able to treat more serious stomach issues.⁴ Ginger works as a digestive aid as it helps in reducing the symptoms of flatulence, intestinal colic, IBS and poor digestion by stimulating the digestive acids and secretions, which helps in digestion, absorption and assimilation.⁵

Overview of Ginger

Brief History and Traditional Uses

Worldwide ginger has been popular as a spice and herbal medicine for thousands of years. In China, for example, it has been used to treat stomach upset, diarrhoea, nausea and help to improve digestion.⁷ It has been used alone or in combination as a spice or remedy in ancient recipes of Iranian Traditional Medicine (ITM) manuscripts. Its important applications in ITM manuscripts include, as a brain and digestive tonic, hepatic obstructions opener, aphrodisiac, desiccating and emollient of phlegmatic and compact humour sticking to stomach, intestine, brain and throat. ITM literature also described its use as a vermifuge in the treatment of paralysis and obstructive jaundice. The ginger plant is endemic to India and widely cultivated in Asia, Africa, Latin America and Australia.⁶ It has also been used to treat the common cold, flu-like symptoms, headache, painful menstrual periods, arthritis, colic, diarrhoea and help to improve heart condition.⁷

Nutritional Composition

Ginger ( Zingiber officiale ) powder prepared by different methods suggest nutritional composition within a certain range. The mean score obtained for colour is from (7.60) to (8.20). Moisture content ranges from 3.55% to 3.78 %. Protein, fibre, fatand ash content ranged from 5.02 to 5.82, 4.97 to 5.61, 0.76 to 0.90 and 3.38 to 3.66 %, respectively. β-carotene and ascorbic acid content are present in the range from 0.81 mg/100 gm to 3.83 mg/100 g, whereas calcium is around 69.21 mg/100 gm.⁸

Components of Ginger Aiding Digestion

Ginger contains numerous active ingredients such as phenolic and terpene compounds. The major identified terpene components are gingerol and shogaol which are sesquiterpene hydrocarbons and phenolic compounds.⁹ The health benefits of ginger are mainly attributed to its phenolic compounds, such as gingerols and shogaols.¹⁰ Gingerol benefits gastrointestinal motility - the rate at which food exits the stomach and along the digestive process.¹¹ It is also involved in the upregulation of food palatability and digestive enzyme secretion.¹² In fresh ginger, gingerols are the major polyphenols, such as 6-gingerol, 8-gingerol, and 10-gingerol, which on treatment with heat or long-term storage can be converted into corresponding shogaols. Hydrogenation of shogaols converts it into parasols. There are also many other phenolic compounds in ginger, such as quercetin, zingerone, gingerenone-A, and 6-dehydrogingerdione. Moreover, there are several terpene components in ginger, such as β-bisabolene, α-curcumene, zingiberene, α-farnesene, and β-sesquiphellandrene, which are considered to be the main constituents of ginger essential oils. Besides these, polysaccharides, lipids, organic acids, and raw fibres are also present in ginger.¹⁰

Benefits of Ginger for Digestive Health

Ginger has been used since ancient times as a traditional remedy for gastrointestinal complaints. It is widely used for its different natural medicinal properties, especially as an antiemetic. It demonstrates an effective and inexpensive treatment for nausea and vomiting. Clinical studies evaluated it to provide safe and effective treatment for pregnancy and chemotherapy induced nausea and vomiting.¹³ Ginger improves gastrointestinal motility and promotes gastric emptying. Clinical study conducted on 12 healthy volunteers showed that  ginger significantly accelerated gastric emptying and was effective in indigestion.¹⁴ Studies evaluating the effectiveness of ginger in patients with osteoarthritis and rheumatoid arthritis had mixed results but powdered ginger subjectively described relief in pain and swelling.¹⁵

Methods of Ginger Consumption for 

Digestive Health

Ginger is versatile and can be enjoyed in various ways to promote a healthy lifestyle. You can incorporate it into your diet by adding approximately a tablespoon of ground ginger or 2/3 cup of freshly ground ginger to dishes like oatmeal, chia seed puddings, soups, and salad dressings. Additionally, you can enjoy ginger in herbal teas, smoothies, and baked goods, or even as crystallized candy. For a convenient option, you can make ginger pills by blending fresh ginger juice with ginger powder in a ratio of 16:1, forming a thick paste, and rolling it into pills once dried.¹⁶

Potential Side Effects and Precautions

The U.S. Food and Drug Administration (FDA) recognizes ginger root as generally safe, with an approved daily intake of up to 4 grams. However, exceeding this amount may lead to gastrointestinal discomfort, allergic reactions, increased bleeding for individuals with certain conditions, central nervous system depression, and arrhythmia. Ingesting over 6 grams of ginger root can worsen gastrointestinal issues like reflux, heartburn, and diarrhea, potentially exacerbate warfarin toxicity, lower blood pressure, and in rare cases, induce arrhythmia. Additionally, by increasing bile acid secretion, it may contribute to gallstone formation.¹⁶

Summary

Ginger is a natural remedy known for its digestive health benefits, such as alleviating heartburn, reducing bloating, and easing abdominal pain and cramping. It stimulates digestive acids and secretions, aiding in digestion, absorption, and assimilation. Additionally, ginger is effective in treating nausea and vomiting, including pregnancy and chemotherapy-induced symptoms, and can improve gastrointestinal motility and gastric emptying.