Benefits
A source of beta-carotene, potassium and fiber
By USDA data, 100 g of fresh apricot supplies about 1,094 mcg of beta-carotene (96 mcg of vitamin A as RAE), 259 mg of potassium, 2 g of fiber and 10 mg of vitamin C for 48 kcal. Drying concentrates most nutrients: 100 g of sulfured dried apricots has 1,162 mg of potassium and 7.3 g of fiber, but also 241 kcal and 53 g of sugars. These are nutrient amounts, not tested outcomes.
Lower glycemic index than white bread in a single-meal test
In a randomized crossover test in 10 healthy adults, dried apricots supplying 50 g of available carbohydrate had a glycemic index of about 42, against 71 for white bread, a significant difference. Replacing half of the bread's carbohydrate with dried apricots lowered the meal's index to about 57. The study measured single meals and was funded by dried fruit trade groups.
Post-meal glucose after dried apricots compared with rice
In a randomized test in 11 healthy young adults in Beijing, dried apricots supplying 50 g of available carbohydrate had a glycemic index of 56, significantly below steamed rice (81). When dried apricots replaced half the rice carbohydrate, the meal's index (75) did not differ significantly from rice alone. Only dried apples lowered the response of a rice meal.
Glycemic response to fresh apricots among common fruits
In a study that randomly assigned 61 adults with type 2 diabetes to test one of eight fruits, fresh apricots had a glycemic index of about 82, and the glycemic index did not differ significantly between the fruits tested. Blood glucose peaked later after apricots (about 81 minutes) than after grapes, oranges or peaches. Each group tested only one fruit, and the abstract does not give the portion size.
Antioxidant blood and urine markers with daily fresh apricots
In a 3-week randomized study in healthy Egyptian adults (7 per group), 200 g a day of fresh apricots did not change plasma or urinary antioxidant activity, urinary polyphenols or the urinary oxidation marker TBARS, while the pomegranate juice group improved on several of these measures. The groups were very small.
Intestinal lining under drug-induced stress in rats
In rats given the drug methotrexate, which damages the small intestine, apricot and beta-carotene, alone or together, reduced tissue damage and oxidation markers and restored antioxidant enzymes compared with methotrexate alone. This is animal work; the abstract does not give a dose in human terms, and it has not been tested in people.
Mechanism of action
Beta-carotene as a provitamin A source
Apricot flesh is rich in beta-carotene, a carotenoid the body can convert to vitamin A. USDA lists 1,094 mcg of beta-carotene and 96 mcg of vitamin A (as retinol activity equivalents) per 100 g of fresh fruit, and 2,163 mcg of beta-carotene per 100 g of sulfured dried fruit.
Sugar profile and the post-meal glucose response
Dried apricots contain fructose and sucrose as well as glucose; in one test portion, 50 g of available carbohydrate came with about 9.1 g of fructose, 13.1 g of glucose and 7.3 g of sucrose. In a separate test of four dried fruits, meals with a higher fructose to glucose ratio had lower glycemic index values, an association rather than a tested cause.
Amygdalin in the kernel releases cyanide when crushed
The kernel inside the apricot stone holds amygdalin, a cyanogenic glycoside that is broken down to cyanide when the kernel is chewed or ground. In a human feeding study, bitter apricot kernels raised blood cyanide quickly, with a mean peak about 20 minutes after eating. The fruit flesh does not come into contact with the kernel.
Clinical trials
Acute randomized multiple-crossover trial following the ISO glycemic index method: dates, dried apricots, raisins and sultanas eaten alone (50 g available carbohydrate), replacing half the carbohydrate of white bread, or as a small 7.5 g fructose dose added to white bread, compared with white bread controls; supported by the International Nut and Dried Fruit Council Foundation and the National Dried Fruit Trade Association, which also supplied the fruit; registered as NCT02960373. (Viguiliouk et al. 2018, Nutr Diabetes)
10 healthy adults (7 men, 3 women; mean age 39, mean BMI 25) in Toronto, Canada.
Dried apricots alone had a glycemic index of about 42 against 71 for white bread (P < 0.05), the lowest of the four fruits. Replacing half the bread carbohydrate with dried apricots lowered the index to about 57, the only significant displacement effect (P = 0.025). The small fructose dose from apricots added to bread had no benefit. Single meals only, in 10 people.
Randomized test of glycemic responses over 240 minutes to dried apples, dried jujubes, raisins and dried apricots eaten alone (50 g available carbohydrate), combined with rice (25 g carbohydrate each), or combined with rice plus 30 g of almonds, with glucose and steamed rice as references. (Zhu et al. 2018, Nutrients)
11 healthy adults in Beijing, China.
Dried apricots alone had a glycemic index of 56, significantly lower than rice (81), and similar to the other dried fruits. A meal of dried apricots and rice had an index of 75, not significantly different from rice alone; only the dried apple and rice meal was significantly lower than rice. With 30 g of almonds added, the dried apricot and rice meal had an index of 64, below rice alone; the paper's table shows no significant drop from the apricot and rice meal without almonds, while its abstract names dried apples as the one meal almonds did not lower. The authors declared no conflicts.
Randomized controlled trial with five equal groups: no-supplement control, 200 g a day of fresh apricots, 250 g of pomegranate juice, pomegranate juice plus fermented sobya, or fermented sobya alone, each eaten daily for 21 days; outcomes measured before and after within each group. (Gouda et al. 2016, Nutr J)
35 healthy Egyptian adults aged 21 to 35 (7 per group).
Fresh apricots did not change urinary polyphenol excretion, plasma or urinary antioxidant activity, urinary TBARS or red cell glutathione transferase activity compared with baseline. Pomegranate juice raised plasma and urinary antioxidant activity and lowered urinary TBARS, and fermented sobya raised glutathione transferase activity. With 7 people per group, the study was too small to rule out small effects.
Randomized comparative study in which each participant group tested one of eight fresh fruits (pears, apples, oranges, grapes, plums, peaches, apricots, bananas) to measure glycemic index, peak rise and time to peak. (Lunetta et al. 1995, Diabet Med)
61 adults with type 2 diabetes in Catania, Italy, split into eight groups.
Apricots had a glycemic index of about 82 and a peak rise of about 4.08 mmol/l; there were no statistical differences in glycemic index or peak rise between the fruits. Time to peak was longer after apricots (about 81 minutes) than after grapes, oranges or peaches (P < 0.01). The glycemic index correlated with the fruits' glucose content. The abstract is truncated and does not give the amount of fruit eaten.
Double-blind food challenge study of sulfited lettuce, shrimp, dried apricots, white grape juice, dehydrated potatoes and mushrooms. (Taylor et al. 1988, J Allergy Clin Immunol)
8 adults with asthma confirmed as sulfite-sensitive by double-blind capsule and drink challenges.
Four of the 8 did not react to any sulfited food. Of the other 4, who reacted to sulfited lettuce with a fall in lung function, 2 of the 3 challenged also reacted to dried apricots and white grape juice. The authors concluded that reactions depend on the food, its residual sulfite level and the person's sensitivity.
Crossover study by the German Federal Institute for Risk Assessment in which each participant ate persipan paste, linseed, bitter apricot kernels and fresh cassava, each portion containing the equivalent of 6.8 mg of cyanide, with blood cyanide measured by GC-MS. (Abraham et al. 2016, Arch Toxicol)
12 healthy adults.
Mean blood cyanide peaked at 14.3 micromol/L about 20 minutes after bitter apricot kernels (about 3,250 mg total cyanide per kg of kernels), close to cassava (15.4 at 37.5 minutes) and well above linseed (5.7) and persipan (1.3). The authors derived an acute reference dose of 0.075 mg/kg body weight for cyanide from unprocessed foods that still contain their own enzyme. This concerns kernels, not apricot fruit.