Do people with gastric-bypass surgery blow a higher breathalyzer level?

People who have undergone gastric bypass surgery may experience changes in their alcohol metabolism, which can affect the outcome of breathalyzer tests. Here's how gastric bypass surgery can impact breathalyzer readings:

1. Altered Absorption: After gastric bypass surgery, the stomach is bypassed, and food goes directly into the small intestine. This can result in faster absorption of alcohol into the bloodstream.

2. Increased Absorption: Gastric bypass surgery can lead to changes in the production and composition of digestive juices, which may impact alcohol absorption. Some studies suggest that the surgery may increase the rate and extent of alcohol absorption, leading to higher peak blood alcohol concentrations (BACs).

3. Reduced Clearance: Gastric bypass surgery can affect the metabolism and clearance of alcohol from the body. Reduced liver function and changes in enzyme activities can lead to a longer duration of alcohol's presence in the blood, resulting in a higher breathalyzer reading for a more extended period.

4. Smaller Blood Volume: Gastric bypass surgery can lead to a decrease in total blood volume. Because breathalyzers measure the concentration of alcohol in the breath, a smaller blood volume can result in a higher BAC reading for the same amount of alcohol consumed.

However, it's important to note that the effects of gastric bypass surgery on breathalyzer readings can vary among individuals and may depend on factors such as the specific surgical procedure performed, individual physiology, and drinking patterns. Some studies suggest that the impact on breathalyzer levels may be more pronounced in the early stages post-surgery and gradually diminish over time.

It's crucial for individuals who have undergone gastric bypass surgery to understand how the surgery may affect their breathalyzer readings and how it could impact their ability to drive safely. Responsible drinking and adhering to legal limits are essential to prevent impaired driving and potential legal consequences.