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Management of Food Poisoning in Older Adults - An Overview

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Older adults can get hospitalized due to food poisoning because of age-related weakening of immunity and impaired functioning of the organ systems.

Medically reviewed by

Dr. Ghulam Fareed

Published At January 20, 2023
Reviewed AtMay 30, 2023

Introduction

Anyone can get food poisoning, but aged individuals are more likely to get hospitalized or die due to the same. With age, organs and body systems undergo many changes. The immunity gets weakened, and the body finds it challenging to eliminate organisms that cause infections and illness. Usually, healthy individuals recover from mild to moderate food poisoning on their own. But it could be hard to get an easy recovery in the case of older adults.

Why Do Older Adults Have an Increased Risk of Food Poisoning?

The adults, mainly those over 60 years, are more likely to get severe food poisoning or infections. It is primarily due to the following reasons:

  • The body's disease-fighting mechanism or defense mechanism gets affected due to a weakening immune system.

  • The digestive process gets altered, and the stomach holds the food for a prolonged period, allowing bacteria to develop within the contents causing infections.

  • The liver and kidney are usually responsible for removing waste materials and toxins. The altered working of both organs causes inadequate removal of foreign bodies or toxins.

  • The amount of acid produced by the stomach may get reduced with age. Acid can reduce the number of bacteria.

  • Chronic conditions like cancer or diabetes (increased blood sugar level) may also increase the chance of getting food poisoning.

  • Medications like Corticosteroids and immunosuppressants can also make the person more prone to food poisoning.

What Is Food Poisoning?

Foodborne illness occurs when the person consumes contaminated (getting infected by toxic organisms like viruses, bacteria, parasites, or fungi) food. The organisms as such or their toxic byproducts may be responsible for food poisoning. Whenever an individual consumes a toxic product, the body tends to get rid of that. As a result, the person may go through symptoms like diarrhea, fever, or vomiting. The symptoms may be uncomfortable, but it is the body's way of getting the person back to a healthy state.

Once the contaminated food gets consumed, the stomach lining may get inflamed, leading to gastroenteritis. Gastroenteritis is a sign that the immune system got activated to fight against infection. It may be hard to notice where the infection came from because it usually takes more than two days to develop the symptoms. But it can be identified by tracking the foods consumed typically associated with poisoning or identifying if someone else also got similar symptoms.

What Causes Food Poisoning?

Eating or drinking contaminated food, water or beverages can cause food poisoning. Contamination can happen at any stage of food production, from harvesting to storage to preparation or cooking. It occurs when food is not fresh or washed well. Food can also lead to contamination when not handled in a proper sanitary way or not cooked to a safe temperature. Improper food storage, inadequate refrigeration, and freezing can contaminate the food.

Raw eggs, undercooked poultry, beef, pork, and processed meat may contain Salmonella, causing bacterial food poisoning. Salmonella is the most common cause of bacterial food poisoning. E. coli (Escherichia coli), found in raw vegetables and undercooked meat, releases a toxin that causes food poisoning. Undercooked shellfish, green leafy vegetables, and fresh fruits may contain Norovirus, which can cause viral poisoning. Staphylococcus aureus contaminated milk, meat, and dairy products by touching them with contaminated hands.

What Are the Signs of Food Poisoning?

The symptoms of food poisoning may vary with the source of infection. The most common symptoms of food poisoning are:

  • Nausea.

  • Vomiting.

  • Diarrhea.

  • Stomach pain.

  • Headache.

  • Stomach cramping.

  • Fever.

  • Weakness.

  • Bloody stool.

The signs of the poisoning can start within one hour and may sometimes take weeks to develop. Symptoms may last several days to weeks, and the infection can spread if others have had the same contaminated food. Germs can also spread through tiny particles of vomitus or poop.

When to See a Doctor?

The symptoms may stay prolonged or may get worse in older adults. Seeking immediate medical attention is essential in the following cases:

  • The person experiences severe vomiting and dehydration.

  • Blood in vomit or stool.

  • Severe stomach pain or cramps.

  • Extreme diarrhea leading to weakness.

  • High fever.

  • Neurological symptoms like muscle weakness, blurry vision, or tingling sensation.

The healthcare provider may ask about the symptoms and the history of food consumed in the past hours or days. Stool and blood samples may be collected to check for the presence of poison-causing organisms.

How to Treat Food Poisoning in the Elderly?

Food poisoning can be treated by replacing electrolytes and fluids to treat dehydration caused by fluid loss due to vomiting and diarrhea. Drinking plenty of water is essential. In case of vomiting, the person may feel nauseous while drinking, and taking small sips of clear liquids may be helpful. Drinking water, sports drinks, broth, and fruit juices can be considered to treat dehydration. Oral rehydration solution contains glucose and electrolytes and is an effective remedy to manage lost fluids and electrolytes.

Once the cause is determined, the doctor may prescribe antibiotics for certain food poisoning. Over-the-counter medications like Loperamide (antidiarrheal) can also be used in some cases. Antibiotics should only be taken if prescribed by the doctor. Doctors may also prescribe probiotics. Probiotics are live microbes similar to those in the digestive tract and help prevent diarrhea.

How to Prevent Food Poisoning?

Prevention is better than cure. The following methods can help to prevent the occurrence of food poisoning.

  • Store raw meat, poultry, and seafood separately.

  • Refrigerate and freeze foods that may get spoiled.

  • Wash hands with soap and water before and after handling food.

  • Wash vegetables and fruits before usage.

  • Cook meat and seafood long and at high temperatures to kill microbes.

  • Wash utensils and surfaces often.

Conclusion

Foodborne diseases can happen to anyone and at any age. Taking proper care of hygiene and handling food can prevent food poisoning to an extent. But if symptoms are severe, it is essential to seek medical help to test the condition and treat it.

Frequently Asked Questions

1.

What Is the Quickest Method for Recovering From Food Poisoning?

Drink at least eight glasses of water a day to increase fluid intake and help flush out food poisoning. People can also try herbal tea or broth to help soothe the stomach. Give the body a few hours of rest so that it can mend. After the stomach has calmed down, avoid eating anything at all. Then, progressively resume eating bland meals like toast, rice, and bananas. To alleviate mild dehydration, hydrate with electrolytes. In extreme situations, get medical help if people have trouble staying hydrated or exhibit severe symptoms.

2.

How Can One Distinguish Between a Stomach Bug and Food Poisoning?

The symptoms of food poisoning and the stomach bug are different, although these two are similar. While the stomach flu is a bacterial infection, food poisoning is a viral infection of the digestive tract. While symptoms of a stomach bug normally appear 12 to 48 hours after exposure, those of food poisoning usually start earlier, frequently within a few hours. While stomach flu usually results in flu-like symptoms, food poisoning usually recovers faster and has more severe symptoms. Consult a doctor if people are unsure, especially if the symptoms are severe or persistent.

3.

Why Does Food Poisoning in the Elderly Carry a Higher Risk?

Due to weakening immune systems, long-term health issues, an increased chance of hospitalization, and other factors, food poisoning is more severe in older people. Seniors with long-term medical issues such as diabetes and kidney disease may find it more challenging to fight off infections. Older people must take precautions against food poisoning to safeguard their health and avoid getting new diseases.

4.

After Food Poisoning, How to Cleanse the Digestive Tract?

After food poisoning, take these actions to cleanse the digestive tract:


- Stay hydrated by consuming electrolyte-rich sports drinks or ice chips.


- Consume bland, low-fat, low-fiber foods that are easy on the digestive system and stomach.


- To replenish good bacteria lost during the cleansing process, try natural therapies like probiotic pills, natural yogurts, or ginger tea for at least two weeks.


- To stop the spread of bacteria, keep up with good hygiene practices including frequent hand washing.


- Because collagen and amino acids aid in the repair of the intestines, think about including bone broth in the diet.


- Get lots of peaceful sleep to aid in the digestive system's recovery. See a doctor if symptoms worsen or continue.

5.

How Long Does the Body Need to Recover From Food Poisoning?

In healthy people, food poisoning may persist for 12 to 48 hours, but in exceptional cases, the illness can persist for 10 days or longer. A week is the typical recovery time after food poisoning, though some people may need more time. If symptoms persist for more than two days, consulting a physician is advised. It is critical to practice good hygiene and get medical help if symptoms don't go away.

6.

Which Medication Is Recommended for Food Poisoning?

Probiotics, antibiotics like Azithromycin or Rifaximin, antiparasitics like Ciprofloxacin, and over-the-counter drugs like Loperamide and Pepto-Bismol are some of the treatments available for food poisoning. Although these drugs should be taken cautiously with a healthcare provider's guidance, over-the-counter medicines can help control diarrhea and reduce nausea. Probiotics replenish beneficial bacteria in the digestive tract, whereas antiparasitics target parasites directly. For advice on the best course of action based on the unique condition and symptoms, speak with a healthcare professional.

7.

What Are Food Poisoning’s Initial Symptoms?

Symptoms of food poisoning include headaches, weakness, loss of appetite, mild fever, cramps and soreness in the abdomen, vomiting, diarrhea, and flu-like symptoms. These symptoms may appear hours or days after consuming food that has been contaminated, and these may serve as an early indicator of the sickness. If symptoms intensify or last longer, it is critical to drink plenty of water and get rest. If the symptoms intensify or persist, get medical attention. To avoid further health issues, the body rids itself of viruses and bacteria in response to food poisoning.

8.

Which Three Guidelines Aid in Preventing Food Poisoning?

Three important guidelines should be followed to avoid food poisoning: wash the hands before handling, separate raw and cooked foods, and heat the foods to the proper temperature. To ensure a safe internal temperature, use a food thermometer and thoroughly wash all equipment and surfaces after usage. Use safe water and raw materials, and chill meals correctly to slow the growth of bacteria. Following these guidelines can help prevent food poisoning.

9.

Is a Stomach Bug Affecting People in 2023?

There have been reports of stomach bug outbreaks in the US in 2023, including a Shigella outbreak at the Centers for Disease Control and Prevention (CDC) and a norovirus outbreak at Northwestern University. Early in 2023, the number of norovirus cases spiked and peaked in February and March. Experts caution that as winter and the holiday season draw near, norovirus activity is predicted to rise. Keeping up with the latest outbreaks and halting the spread of these infections depends on maintaining proper hygiene.

10.

Can Food Poisoning Affect an Individual While Sparing the Other?

Two people can contract food poisoning from the same meal. This may result from the infectious dose that each person consumes, in addition to other elements like having a longer-lasting disease, having a stronger immune system, or being more vulnerable to particular groups like advanced age and small children. These groups are most vulnerable to foodborne infections from contaminated foods.

11.

When Should Food Poisoning Be Seen by a Physician?

A temperature higher than 100.4 degrees, blood in the stool or vomit, diarrhea that lasts longer than three days, excruciating pain, neurological problems, and extreme dehydration are all signs of food poisoning. For a precise diagnosis and recommended course of treatment, a medical professional should be consulted.

12.

What Age Range Is Most Susceptible to Food Poisoning?

Certain populations are more susceptible to food poisoning than others, such as pregnant women, children under five years old, elderly people 65 years of age and above, as well as those with weakened immune systems. It is critical to speak with a healthcare provider if people are having symptoms or other health problems.

13.

Which Food Poisoning Illness Is Most Prevalent?

In the United States, Salmonella is the most prevalent bacterial cause of food poisoning, accounting for the majority of hospitalizations and deaths. Other causes of food poisoning include parasites, viruses, and bacteria. Another important cause is norovirus, which is responsible for almost 43 percent of cases and nearly 25 percent of cases of salmonella. To avoid contracting a foodborne illness, handling food correctly is essential.

14.

What Is the Underlying Reason Behind Food Poisoning?

Foodborne illnesses, such as food poisoning, are brought on by eating or drinking food or drinks contaminated with pathogens, bacteria, viruses, parasites, or poisons. Food can become contaminated during the manufacture, processing, or cooking stages, as well as when it comes into contact with polluted surfaces or water, or when it is not prepared or stored at the proper temperature. It is essential to handle food securely to avoid contracting foodborne infections.

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Dr. Ghulam Fareed
Dr. Ghulam Fareed

Medical Gastroenterology

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