Arielle Cruz
Alcoholic drinks contain a lot of calories and have minimal nutritional value. Alcohol is made from fermented sugars in foods like grains, fruits, and vegetables, and the sugars are converted to ethanol, a concentrated form of energy. Each gram of alcohol has 7 calories, almost as many as a gram of fat. Alcohol metabolism can deplete the body's stores of essential vitamins and minerals, and the calories from alcohol are not available to our muscles. Alcohol also inhibits the absorption of nutrients and can lead to weight gain.
| Characteristics | Values |
|---|---|
| Number of calories | 7 calories per gram, almost as many as a gram of fat |
| Empty calories | Yes |
| Nutritional value | Little to none |
| Effect on nutrient absorption | Inhibits absorption of nutrients such as thiamin (vitamin B1), vitamin B12, folic acid, and zinc |
| Effect on memory and retention | Hampers memory and retention |
| Effect on muscle growth | Impedes muscle growth |
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What You'll Learn
Alcohol is a source of calories, with 7 calories per gram
Alcohol is a source of calories, with seven calories per gram. This is almost as many calories per gram as fat, which contains nine calories per gram. Alcoholic drinks are often high in sugar, too, which increases the calorie count. A couple of drinks can add 500 calories or more to your daily intake.
These calories from alcohol are referred to as ''empty calories'' as they have no nutritional value. Alcohol is devoid of protein, vitamins, and minerals, and it inhibits the absorption of vital nutrients, such as thiamine (vitamin B1), vitamin B12, folic acid, and zinc. It also slows down the body's ability to heal and causes dehydration.
Consuming alcohol can negatively impact your nutritional health and increase your risk of weight gain, type 2 diabetes, cardiovascular disease, liver disease, digestive issues, and cancers. It can also affect your sleep cycle, memory formation, and endurance.
If you are looking to maintain a balanced and healthy diet, it is important to limit or avoid the consumption of empty calories, including those from alcohol.
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Alcohol is not a nutrient and has little nutritional value
Consuming alcohol can lead to weight gain as it adds to your total caloric intake without satisfying hunger or providing essential nutrients. Alcohol is also a toxin that can negatively impact nearly every organ system in the body. It can cause dehydration, slow down the body's ability to heal, and disrupt the sleep cycle, affecting the brain's ability to learn and retain information.
For athletes, alcohol can be particularly detrimental to performance. It constricts aerobic metabolism and endurance, decreases muscle build-up, and prevents muscle recovery. Alcohol calories are not converted to glycogen, a form of stored carbohydrates, so they are not a good source of energy during exercise.
Overall, while alcohol may provide calories, it does not provide any essential nutrients and can even inhibit the absorption of nutrients. This can lead to nutrient deficiencies and negatively impact overall health and performance. Therefore, it is important to limit or avoid alcohol intake when maintaining a balanced and healthy diet.
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Alcohol metabolism depletes the body's NADH stores
Alcoholic drinks contain a lot of calories—about 7 calories per gram, which is almost as many as a gram of fat. Alcohol also contains a high number of kilojoules. However, these calories are considered "empty calories" as they are devoid of proteins, minerals, and vitamins. Alcohol also inhibits the absorption and usage of vital nutrients such as thiamin (vitamin B1), vitamin B12, folic acid, and zinc.
The high caloric content of alcohol is due to the fermentation and distillation process that produces the alcohol content. The sugars in foods like grains, fruits, and vegetables are converted to ethanol, a concentrated form of energy. This is why alcohol is high in calories and kilojoules.
During alcohol metabolism, acetaldehyde is oxidized to acetate, with NAD+ acting as a cofactor and being reduced to NADH. NAD+ is a key regulator of numerous energy metabolism pathways, including glycolysis, the tricarboxylic acid (TCA) cycle, and mitochondrial respiration. Chronic ethanol intake results in the conversion of large amounts of NAD+ to NADH, lowering the NAD+/NADH ratio and inhibiting mitochondrial oxidation. This imbalance in the NAD+/NADH ratio is a cause of alcohol toxicity and can lead to liver injury.
To restore energy metabolism and prevent alcohol-induced liver injury, NAD+ supplements have been suggested. Studies in mice have shown that nicotinamide, a form of NAD+, can improve liver function and repair mitochondrial structure and function.
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Alcohol inhibits absorption of nutrients like zinc and folic acid
Alcoholic drinks contain a lot of calories—about seven calories per gram, which is almost as many as a gram of fat. A couple of drinks can add 500 or more calories to your daily intake. Alcohol also increases your desire for junk food, which can lead to weight gain and obesity. However, the calories in alcohol are considered "empty calories" because they are devoid of any nutritional value. Alcohol is devoid of proteins, minerals, and vitamins, and it inhibits the absorption and usage of vital nutrients such as thiamin (vitamin B1), vitamin B12, folic acid, and zinc.
Folic acid is an integral part of a coenzyme involved in the formation of new cells. A lack of it can cause a blood disorder called "megaloblastic anemia," which lowers the oxygen-carrying capacity of the blood and negatively affects endurance activities. Folic acid is also one of the vitamins required for tissue repair. Studies have shown that alcohol inhibits the absorption of folic acid, even in non-human primates.
Zinc is essential to your energy metabolic processes. Since alcohol depletes your zinc resources, it results in an even greater reduction of your endurance. Studies have shown that alcohol reduces zinc content in the brain. It also has a direct effect on zinc metabolism.
Alcohol also reduces energy sources by inhibiting a process known as gluconeogenesis, in which glucose is formed from non-glucose substances. This results in a lack of energy and endurance.
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Alcohol affects memory formation and retention
Alcoholic beverages contain a lot of calories—about seven calories per gram, which is almost as many as a gram of fat. Each drink contains approximately 100-150 empty calories. The high number of calories in alcohol can contribute to weight gain and obesity, which can increase the risk of other health issues. Alcohol also increases the desire for junk food and can lead to a 30% increase in food intake when consumed with meals.
However, alcohol has no nutritional value and inhibits the absorption of nutrients. It is devoid of proteins, minerals, and vitamins, and it hinders the absorption and usage of vital nutrients such as thiamin (vitamin B1), vitamin B12, folic acid, and zinc.
In addition to its impact on nutrition, alcohol affects memory formation and retention. Excessive alcohol consumption can lead to memory loss, both in the short and long term. This is due to the toxic damage and inhibition of nerve function, particularly in the hippocampus, a part of the brain responsible for forming and maintaining memories. Vitamin B1 deficiency, which is common in individuals who abuse alcohol, can also contribute to memory issues.
Alcohol disrupts sleep patterns, reducing the brain's ability to learn and retain information. Even drinking up to six hours before sleep can negatively affect the sleep cycle. Consuming five or more alcoholic drinks in one night can impact brain and body activities for up to three days, and consecutive nights of heavy drinking can extend this effect to up to five days.
Frequent blackouts or memory loss due to alcohol can lead to long-term brain damage and a decline in cognitive skills, similar to the effects of dementia. However, it is important to note that reducing alcohol consumption and improving memory retention techniques can help mitigate these issues.
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Frequently asked questions
Yes, alcohol contains lots of calories—about 7 calories per gram, which is almost as many as a gram of fat.
Alcoholic drinks have no nutritional benefits. Alcohol holds very little nutritional value for athletes, as it is devoid of proteins, minerals, and vitamins.
"Empty calories" refer to the relatively high number of calories in alcohol that deliver no nutritional benefit. The body treats alcohol as fat, converting alcohol sugars into fatty acids.
Alcoholic drinks like wine, beer, cider, and spirits are made from natural starch and sugar. Fermentation and distillation are used to produce the alcohol content, which is why alcohol has a high number of calories. However, beer does not have significantly more calories than coke or juice.
