Dates are a delicious and nutrient-dense fruit that has been enjoyed for centuries. Packed with essential vitamins, minerals, and fiber, dates offer an array of health benefits. In this article, we will explore the Nutritional Value of Dates and focus specifically on the benefits of Medjool dates, available in convenient 1kg packs. Some of what gets said about dates holds up, and some of it doesn't. Below we go through what 100 g of dates actually contains, using USDA figures, and what the research says about digestion, energy and bones.
This is general information, not medical advice. If you have diabetes, a bowel condition or any other health problem, ask your doctor before changing your diet.
Nutritional Value of Dates: A Treasure Trove of Goodness
a. Rich in Fiber: Dates have roughly 7 grams of fibre per 100 grams: 6.7 g in Medjool and 8 g in Deglet Noor dates, according to USDA FoodData Central. The NHS says adults should aim for 30 g of fibre a day, and that foods with fibre help digestion and prevent constipation (NHS). So 100 g of dates covers about a quarter of that.
b. Vitamins and Minerals: 100 g of Medjool dates has 696 mg of potassium, 54 mg of magnesium, 0.9 mg of iron and 0.25 mg of vitamin B6 (USDA). Potassium is the standout. The NHS says it helps control the balance of fluids in the body and helps the heart muscle work properly, and that magnesium helps turn food into energy (NHS). Iron is needed to make red blood cells (NHS), and vitamin B6 helps the body use energy from food and form haemoglobin (NHS). The iron and B6 amounts are small, as the sections below show.
c. Natural Energy: Medjool dates have about 277 kcal and 66 g of sugar per 100 g, almost all of it glucose and fructose (USDA). That makes them a handy snack when you need energy. They don't send blood sugar up as fast as you might expect. In a UAE study, five date varieties had glycaemic index values of about 46 to 55 in healthy adults, which the authors class as low, with similar results in people with type 2 diabetes (Alkaabi et al., 2011). A low GI does not cancel out the sugar, though, so portion size still matters.
d. Antioxidants: Dates contain phenolic compounds and other plant chemicals. A review of date research found that most of the work on their health effects is from lab and animal studies, and that studies of the health benefits in people are inadequate (Vayalil, 2012). Lower risk of heart disease, cancer or eye disease from eating dates has not been shown.
Dates and digestion
a. Constipation: Not eating enough fibre is one of the most common causes of constipation, and the NHS suggests gradually increasing the fibre in your diet and drinking plenty of fluids (NHS). In a small UK trial, 22 healthy adults ate seven dates (about 50 g) a day for three weeks, and their bowel movements and stool frequency went up significantly (Eid et al., 2015). Our post on high-fibre dates and digestion has more.
b. Gut bacteria: Dates are often called prebiotic, but the same trial found that eating dates did not significantly change the growth of the gut bacteria groups it measured, or the short-chain fatty acids they produce. It did find lower stool ammonia. One three-week study is not enough to say dates improve gut health.
c. If you have a bowel condition: Dates are not automatically gentle on the gut. For people with IBS who get diarrhoea, the NHS advises cutting down on high-fibre foods (NHS), and dates are high in fibre. If you have IBS or another bowel condition, try a small amount first or ask your doctor or a dietitian.
d. Inflammation: The anti-inflammatory effects of dates come from lab and animal work, as noted above. No study has shown that dates prevent gastritis or inflammatory bowel disease.
Dates for energy
a. A sweet snack with fibre: Unlike sweets or table sugar, dates bring fibre, potassium and magnesium along with their sugar. That makes them a reasonable pick-me-up during the day, or a snack before exercise. They are still calorie-dense, and three or four Medjool dates is plenty.
b. Potassium: Dates are a good source of potassium, which helps control the balance of fluids in the body and helps the heart muscle work properly (NHS). We found no study showing that dates prevent muscle cramps or improve physical performance.
c. Iron: A lack of iron can lead to iron deficiency anaemia, and tiredness is one of its signs. But dates are a small source. 100 g of Medjool dates has 0.9 mg of iron (USDA), against the 8.7 mg a day the NHS gives for men and 14.8 mg for women aged 19 to 49 (NHS). Dates will not fix low iron. If you feel tired all the time, see a doctor. We compare the iron in different dates in Jenis Kurma, Iron and Anemia.
d. Vitamin B6: Medjool dates have 0.25 mg of vitamin B6 per 100 g (USDA). Adults need about 1.4 mg a day (men) or 1.2 mg (women), and the NHS says most people get enough from their daily diet (NHS). There is no evidence that eating dates improves memory, mood or thinking.
Dates and bones
a. Calcium and Vitamin K: Calcium helps build bones and keep teeth healthy, and adults need 700 mg a day (NHS). 100 g of Medjool dates has 64 mg, under a tenth of that (USDA). They have 2.7 micrograms of vitamin K, while an adult weighing 65 kg needs about 65 micrograms a day (NHS). Dates are not a meaningful source of either, and no study has shown that they lower the risk of osteoporosis.
b. Magnesium: Magnesium helps the parathyroid glands, which produce hormones important for bone health, work normally. Men need 300 mg a day and women 270 mg (NHS). 100 g of Medjool dates gives 54 mg, about a fifth of that. Useful, but not enough on its own to protect bones.
c. Joints and inflammation: There are no human studies showing that dates reduce inflammation in the joints or help with arthritis.
The short version
The nutritional value of dates comes down to fibre, potassium, some magnesium and quick energy. Seven dates a day made people go to the toilet more often in one trial, and their GI is lower than their sweetness suggests. The claims about bones, the brain, fatigue and preventing disease are not backed by studies in people. Enjoy Medjool dates as a snack or in recipes, keep the portion sensible, and read more about the fruit itself in Kurma Medjool: A Date Lover's Delight.
References
- USDA FoodData Central. Dates, medjool (FDC 168191). fdc.nal.usda.gov
- USDA FoodData Central. Dates, deglet noor (FDC 171726). fdc.nal.usda.gov
- Alkaabi JM, et al. Glycemic indices of five varieties of dates in healthy and diabetic subjects. Nutr J. 2011;10:59. PubMed 21619670
- Vayalil PK. Date fruits (Phoenix dactylifera Linn): an emerging medicinal food. Crit Rev Food Sci Nutr. 2012;52(3):249-71. PubMed 22214443
- Eid N, et al. Impact of palm date consumption on microbiota growth and large intestinal health: a randomised, controlled, cross-over, human intervention study. Br J Nutr. 2015;114(8):1226-36. PubMed 26428278
- NHS. How to get more fibre into your diet. nhs.uk
- NHS. Constipation. nhs.uk
- NHS. Irritable bowel syndrome (IBS): diet, lifestyle and medicines. nhs.uk
- NHS. Iron. nhs.uk
- NHS. B vitamins and folic acid. nhs.uk
- NHS. Calcium. nhs.uk
- NHS. Vitamin K. nhs.uk
- NHS. Others (magnesium, potassium). nhs.uk