If fatigue isn’t gone, it could be a sign of something serious. From vitamin deficiencies to chronic diseases, here are 14 causes of weakness.
No matter how much time you rested or how many cups of coffee you drank, are there any days when you feel like you’re running out of energy? That’s why am I always so tired when you’re wondering? Well, persistent feeling of weakness and fatigue are actually due to many different things, which drains energy levels and leaves you exhausted physically and mentally. This can include poor lifestyle, nutritional deficiency, or severe conditions such as blood sugar fluctuations, thyroid, and stress. Side effects of certain medications can be one of the common causes of weakness.
14 Causes of weakness you should know
Some of the common causes of weakness and fatigue include:
1. Vitamin B12 deficiency
Vitamin B12 is essential for neural function and the production of red blood cells. If it is lacking, your body will not function properly, leading to fatigue, weakness and intensive trouble. The Journal of Clinical Sleep Medicine combines low vitamin B12 levels with fatigue and weakness. Not only this, but other nutritional deficiencies, including iron, vitamin D and magnesium, can also lead to weakness.
2. Electrolyte imbalance
This is one of the most common causes of weakness. Electrolytes such as sodium, potassium and calcium help regulate muscle and nerve function. If these minerals become unbalanced due to dehydration or kidney problems, they can cause weakness, muscle cramps and fatigue.
3. Sleep problems
If you are tired and awake after a night of sleep, you may experience sleep apnea. This condition causes breathing to stop and begin while you are asleep, causing insufficient rest. Studies in the frontier of psychology show that people with obstructive sleep apnea often experience daytime fatigue, which can feel weak and fog.

4. Chronic fatigue syndrome
Chronic fatigue syndrome is more than just feeling tired. It is a condition in which you experience extreme, unknown fatigue that does not improve with rest. Fatigue is often accompanied by muscle pain and troubles of concentration. It can be frustrating, but the exact cause remains unknown. It can be one of the serious causes of weakness.
5. Blood diseases
Anemia occurs when the body does not have enough healthy red blood cells to carry oxygen. This can lead to constant sensations of fatigue, weakness, dizziness and even shortness of breath. According to Stat Pearls, anemia is one of the most common causes of weakness and fatigue, especially in women.
6. infection
Infections, whether viral or bacterial, can cause fatigue and weakness as the body directs energy to combat the infection. Infections like the flu and cold can drain your energy levels and you feel weak.
7. Aging
Aging is one of the most common causes of weakness. As we age, we naturally experience muscle loss and strength, leading to increased fatigue and weakness. It can slow metabolism and lower energy levels, making daily activities more tiring.
8. Muscle disease
Muscle diseases, such as muscular dystrophy, are a group of genetic disorders that cause muscles to weaken over time. This progressive condition can lead to severe fatigue as the muscles lose strength. According to Statpears, muscular dystrophy affects the strength and ability to perform basic tasks, often leading to chronic fatigue.

9. Neural conditions
Conditions such as multiple sclerosis and Parkinson’s disease affect the nervous system and interfere with movement and other functions. These conditions are a common cause of weakness and fatigue, and are issues of adjustment and balance, making you feel physically drained.
10. Mental health issues
Mental health issues such as anxiety and depression are also one of the most common causes of debilitating. Even after resting, you may still feel exhausted. In some cases, antidepressants prescribed for these conditions may contribute to chronic fatigue and may feel drowsy or weak.
11. Thyroid status
The thyroid gland is the cause that regulates your metabolism. If it is inactive (hypothyroidism), it can cause fatigue, weight gain, weakness and sensitivity to cold. Slow metabolism means that the body does not have the energy it needs to function efficiently, leading to sustained fatigue.
12. Fibromyalgia
Fibromyalgia is a condition that causes extensive pain and tenderness of the muscles and joints. In addition to pain, people with fibromyalgia often experience severe fatigue and weakness, even after a good night’s sleep. According to the Oman Medical Journal, this condition can cause physical and cognitive difficulties that can be overwhelming even on simple tasks.
13. medicine
Certain medications, such as sedatives, blood pressure medications, and especially chemotherapy treatments, can leave you weak and tired. For example, chemotherapy can have a serious impact on energy levels and lead to long-term fatigue, as highlighted in the British Journal of Cancer. This weakness can make it difficult for patients to perform routine tasks.

14. Chronic disease
Chronic symptoms such as diabetes, heart disease, chronic lung disease, kidney disease, cancer, and arthritis can all lead to long-term fatigue and weakness. These weaknesses can be a burden on the body, lower energy levels, and can feel weak. For example, diabetics can experience fluctuating blood glucose levels that lead to fatigue, while cancer patients often report extreme fatigue from disease and treatments like chemotherapy.
When will you see the doctor?
If weakness or fatigue is affecting your daily life, we recommend that you consult a doctor. Cold and flu symptoms usually go away on your own, but if they persist later, see your doctor. If you are already undergoing treatment for your condition and are experiencing the debilitating debilitating of extreme worsening, this may mean that you need to make changes to your treatment plan. Also, if the weakness is accompanied by breathing problems, pain, or irregular heartbeat, be sure to check in with your doctor.
Related FAQs
Can dehydration cause debilitating?
Yes, dehydration can lead to fatigue and weakness as it destroys the balance of the body’s electrolytes, which are essential for proper muscle and nerve function.
Can stress make me feel weak?
Yes, prolonged stress can drain your energy and lead to physical symptoms such as weakness and fatigue.
Is weakness likely caused by lack of exercise?
Yes, lack of physical activity can weaken muscles, lead to fatigue, and make daily tasks more difficult.