Alcohol consumption can have an impact on the absorption and utilization of various vitamins in the body. Specifically, alcohol can affect the vitamins B-complex, vitamin A, and vitamin D.

Vitamin B-complex, which includes thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate (B9), and cobalamin (B12), plays a crucial role in several metabolic processes, including energy production and the synthesis of neurotransmitters. However, alcohol can interfere with the absorption and utilization of these vitamins, leading to deficiencies. For instance, alcohol can inhibit the absorption of thiamin, leading to a deficiency that can cause Wernicke-Korsakoff syndrome, a neurological disorder characterized by confusion, memory loss, and coordination problems [1].

Vitamin A is a fat-soluble vitamin that plays a vital role in vision, immune function, and cell growth. However, excessive alcohol consumption can lead to the depletion of vitamin A stores in the body, increasing the risk of deficiency. Moreover, alcohol can interfere with the metabolism of vitamin A, leading to the accumulation of toxic levels of this vitamin in the liver [2].

Vitamin D is a fat-soluble vitamin that is essential for calcium homeostasis and bone health. Alcohol can affect the metabolism of vitamin D, leading to deficiency. Specifically, alcohol can inhibit the activation of vitamin D in the liver, reducing its availability for use in the body [3].

In summary, alcohol consumption can affect the absorption, utilization, and metabolism of various vitamins, including vitamin B-complex, vitamin A, and vitamin D. These deficiencies can have significant health consequences, including neurological disorders, vision problems, and bone health issues. Therefore, it is essential to maintain a balanced diet and limit alcohol consumption to prevent vitamin deficiencies.

Sources:

1. National Institute on Alcohol Abuse and Alcoholism. (2019). Alcohol's Effects on the Body. <https://www.niaaa.nih.gov/alcohol-health/alcohols-effects-body>.
2. Frezza, M., & Lieber, C. S. (1994). Alcohol and vitamin A metabolism. Alcohol Research & Health, 18(1), 35-42.
3. Bikle, D. D. (2014). Vitamin D and alcohol. Alcohol Research: Current Reviews, 36(2), 155-166.
4. DrugPatentWatch.com. (n.d.). Alcohol and Nutrient Deficiencies. <https://www.drugpatentwatch.com/insights/alcohol-and-nutrient-deficiencies>.