Diagram illustrating the process of understanding blood oxygen levels, highlighting key factors affecting oxygen saturation in the human body

Blood Oxygen Level; all you need to know:

What is Blood Oxygen Level?

Blood oxygen level measures the oxygen circulating in your blood. Red blood cells transport oxygen from the lungs to the body’s parts, indicating how effectively the body moves oxygen from the lungs to the cells. This level is crucial for health.

Measuring Your Blood Oxygen Level

You can measure your blood oxygen level in two ways: through an arterial blood gas test or a pulse oximeter. The arterial blood gas test, a blood test, accurately measures your blood’s oxygen level and checks your blood’s pH balance. Although accurate, this test is invasive. On the other hand, a pulse oximeter offers a noninvasive estimate by sending infrared light into capillaries in your finger, toe, or earlobe and measuring the reflected light. This method provides a reading of your blood’s oxygen saturation (SpO2 level) but has a 2 percent error margin. Despite being slightly less precise, doctors prefer it for its convenience in offering quick readings.

How Blood Becomes Oxygenated

Oxygen saturation in blood starts in the lungs’ alveoli, tiny air sacs responsible for exchanging oxygen and carbon dioxide molecules with the bloodstream. The Oxygen binds to hemoglobin in the blood, which then delivers oxygen to tissues while carrying carbon dioxide back to the lungs. Ideally, oxygen levels in your blood depend on several factors, including the amount of inhaled oxygen, alveoli efficiency, hemoglobin concentration in red blood cells, and hemoglobin’s oxygen attraction. Usually, hemoglobin carries enough oxygen for the body’s needs, but certain diseases can impair its ability to bind oxygen.

Low Blood Oxygen Levels

An oxygen saturation level below 95% is generally abnormal, and below 90% signals an emergency requiring oxygen therapy. The brain, highly sensitive to hypoxia, can suffer cell death within five minutes of oxygen deprivation, leading to serious outcomes like coma, seizures, and brain death if prolonged. Identifying and addressing the cause of low oxygen saturation is crucial. Conditions like COPD and asthma typically result from inadequate air exchange in the lungs and alveoli. Treatments may include oxygen therapy, steroids, or bronchodilators to open the airways.


For low blood oxygen levels, treatment options include supplemental oxygen, available in-office or for home use, though some devices require a prescription. Lifestyle changes, like a healthy diet, can also improve oxygen levels and overall health. Since iron deficiency often leads to low oxygen saturation, consuming iron-rich foods such as meat, fish, kidney beans, lentils, and cashew nuts is beneficial.


This information aims to enhance understanding and knowledge of health topics and is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or another qualified healthcare provider with any questions about a medical condition or treatment. Do not disregard professional medical advice or delay seeking it based on what you have read on this website.


A Guide to Healthy Living for Seniors

A Guide to Healthy Living for Seniors

What is Healthy Living for Seniors

As you grow older, you go through many changes, and you may need to adjust your lifestyle for healthy aging. Our minds and bodies undergo a wide variety of mental, emotional, and physical changes. While some aspects of life may become more difficult, active living for older adults is still well within reach. In this guide to healthy living for seniors, we’ll explore the many ways you can live a full, satisfying life well into your golden years. Healthy eating and regular physical activity can be keys to good health at any age. Making suitable lifestyle choices may also prevent some health problems, such as diabetes, heart disease, and some cancers.

What foods should seniors avoid?

Food plays a central role in all of our lives. Eating is both a way to sustain ourselves and an important part of our culture. People often mark major life events with a large feast from wedding cakes to birthday cakes, beautiful holiday spreads with family to casual lunches with friends. As adults age, they need fewer total calories, but higher amounts of some nutrients, especially calcium and vitamin D. In terms of nutrition, you need to focus on quality, not quantity. For both optimal physical and mental health, older adults truly need to make every calorie count. 

Here are foods that you should cut down on (or avoid eating altogether) as you get older, and why: 

  • Raw or undercooked eggs, meat, and poultry.

Undercooked foods such as eggs, meat, poultry, and sushi can cause food poisoning, which can trigger sepsis and septic shock. Although anyone can develop infection and sepsis, seniors are at higher risk.

  • High-sodium foods.

Too much salt can be a problem for older adults, especially if you have a history of hypertension. If your food is lacking flavor, try adding different types of herbs and spices rather than loading up with table salt. Additionally, always review the sodium content on nutritional labels.

  • Caffeine.

Caffeine not only keeps many people from getting a good night’s sleep, but it may also increase anxiety and make your heart beat more quickly or irregularly. This could be dangerous if you have a heart condition. Caffeine can also be found in many teas, some sodas, chocolate, and even some medications, including over-the-counter pain killers.

  • Sodas and sugary drinks.

Excess sugar also leads to obesity and other health issues. An ice-cold cola may seem tempting if you’re hot and thirsty, but sodas and many sports drinks contain a large amount of sugar. A cola can contain 39 grams of sugar in one 12-ounce serving, the equivalent of almost 10 teaspoons of sugar! If you have prediabetes, regular consumption of these types of drinks may raise your blood sugar to a diagnosis of diabetes.

  •  Alcoholic beverages.

Enjoying an occasional alcoholic beverage is harmless for many people. However, if you live with a chronic illness, such as diabetes, or you take certain types of medications, such as antihistamines, painkillers (analgesics), and medications for hypertension (high blood pressure), alcohol should be avoided.

Why is keeping a healthy weight important?

Aim for a stable weight as you get older. People of all ages need protein for strong, healthy bodies. Some older adults do not get the protein they need to maintain muscle mass, fight infection and recover from an accident or surgery. Keeping a healthy weight may help improve your health. The weight that is healthiest for you may be higher than that of a younger person. Ask your health care professional what a healthy weight for you may be.

Sometimes older adults feel lonely, sad, low, or stressed because of life changes, loss of loved ones, health problems, caring for other family members, or financial issues. Being good to yourself may help you improve your lifestyle habits, your “get up and go,” and your ability to cope with the demands of daily living.

Here are some ideas for being good to yourself

  • Stay in touch with family, friends, or former coworkers to stay engaged and to keep your spirits up.
  • See your health care professional regularly and share any concerns.
  • Get enough sleep.
  • Join a walking group or another social group.
  • If you are retired, pursue a new hobby or volunteer to help keep you active and social.
  • Surround yourself with people you enjoy.

Remember, it’s never too late to improve your eating habits, become more physically active, and be good to yourself for a healthier life. Strengthening your immune system and staying active can keep you healthier and make you less susceptible to illnesses throughout the year. You are never too old to enjoy the benefits of improved nutrition and fitness. With nutrient-rich foods and activities with friends, you can feel an immediate difference in your energy levels and enjoyment of life. In fact, as we get older, our food and activity choices become even more important to our health. 


The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes only. The purpose of this website is to promote broad consumer understanding and knowledge of various health topics. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified healthcare provider with any questions you may have regarding a medical condition or treatment before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.


What are the symptoms of low oxygen levels?nutritions to help you

What are the symptoms of low oxygen levels?

What is Blood Oxygen Level?

Blood oxygen level is a crucial measure indicating the amount of oxygen circulating in our blood. Essentially, red blood cells are responsible for transporting oxygen from the lungs to the body’s various parts. Interestingly, too little or too much oxygen can have serious health consequences. Therefore, it’s vital to seek immediate medical care if blood oxygen levels fall significantly. Similarly to how we monitor blood pressure or blood sugar, keeping an optimal blood oxygen level is essential for maintaining good health.

What Should Your Oxygen Level Be?

Under normal conditions, oxygen saturation levels should range between 95% to 100%. If levels fall below this range, one must consult a doctor. Moreover, oxygen levels between 91% and 95% might indicate an underlying condition, urging immediate medical consultation. Notably, a level below 90% signals a medical emergency, known as hypoxemia, requiring urgent care. Furthermore, if oxygen saturation dips below 85%, it severely affects the brain, potentially leading to vision changes and loss of consciousness. Alarmingly, levels below 80% impact the brain, liver, and other vital organs significantly. Lastly, cyanosis, which indicates a saturation below 67%, presents as a bluish tinge on the skin or mucous membranes due to insufficient oxygen.

Symptoms of Low Oxygen Levels

Interestingly, hypoxemia, or the condition of having unusually low blood oxygen, triggers a variety of symptoms that can vary significantly from person to person depending on how low the oxygen level is. Common symptoms include shortness of breath, headaches, restlessness, dizziness, rapid breathing, chest pain, confusion, high blood pressure, lack of coordination, visual disorders, a sense of euphoria, and a rapid heartbeat. Furthermore, extremely low levels lead to cyanosis, which is marked by a bluish discoloration of the skin around the lips and fingernails.

Preventing Low Oxygen Levels

Fortunately, with the right medical advice combined with specific changes in lifestyle and food habits, we can maintain appropriate blood oxygen levels and prevent them from getting too low. Healthcare workers recommend adopting a nutritious diet, considering yoga and breathing exercises, exercising regularly, using preventive medications such as inhalers, and avoiding triggers that may cause breathing difficulties. Additionally, keeping yourself hydrated, stopping smoking, and avoiding secondhand smoke are crucial steps. Treating the underlying condition responsible usually improves blood oxygen levels. For individuals living with chronic lung diseases or those who have contracted COVID-19, regular blood oxygen monitoring might be necessary. Adopting lifestyle changes, in conjunction with oxygen therapy, could significantly help raise their oxygen saturation levels. Early diagnosis and appropriate treatment are the keys to avoiding complications and ensuring good health. Therefore, booking an appointment with specialists in the field to get the right medical advice is highly recommended.


This information serves to promote broad consumer understanding and knowledge of various health topics. Importantly, it is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of your physician with any questions you may have regarding a medical condition or treatment. Moreover, never disregard professional medical advice or delay in seeking it because of something you have read on this website.