Post News

Eye symptoms that could signal silent killer health condition

A doctor has highlighted a crucial warning sign of a deadly health condition that frequently goes undetected. Whilst high cholesterol quietly damages the body internally, there's one visible indicator people should watch for.

Dr. Kyle Hoedebecke, clinical advisor at Alpas Wellness in Virginia, explained to GB News: "High levels of cholesterol don't usually cause any early physical symptoms, which is why high cholesterol is often called a silent killer and requires regular screening."

Blood tests remain the most dependable method for monitoring cholesterol levels and catching problems early. Elevated cholesterol can damage arteries, potentially leading to life-threatening emergencies.

What are the warning signs of high cholesterol?

Typically, warning signs are difficult to detect, with many patients only becoming aware of issues after experiencing serious complications such as a stroke.

According to Dr. Hoedebecke, yellowish patches caused by fat deposits may develop on the skin, commonly appearing around the knees, elbows, or eyelids. He emphasized that indicators like these should encourage people to schedule a medical evaluation.

If you notice this, it is advisable to request cholesterol testing from your doctor.

The eyes can also provide revealing clues about cholesterol problems, Dr. Hoedebecke noted. He explained: "The appearance of a corneal arcus, which is a white, gray, or blue arc or ring in the outer part of the iris of the eye" requires medical attention. Additionally, persistent fatigue and recurrent dizziness must not be overlooked.

What are the factors influencing cholesterol levels?

According to NHS guidance, high cholesterol occurs when excessive amounts of a fatty substance known as cholesterol accumulate in your blood.

The NHS notes: "You're more likely to get high cholesterol if you're over 50, a man, you've been through the menopause, or you're of South Asian or sub-Saharan African origin. It can also run in families."

Additional contributing factors include consuming fatty foods, insufficient physical activity, excess weight, smoking, and alcohol consumption.

Cholesterol levels can be reduced through a healthy diet and increased physical activity. Medication may also be necessary for some individuals. Staying alert to these warning signs could help you identify potential underlying health conditions early.

What happens to your blood sugar when you take vitamin D every day

Taking vitamin D daily may help your body regulate blood sugar levels and reduce your risk of developing diabetes. However, not all studies agree that vitamin D has these effects in most people.

Your Insulin Sensitivity May Improve

Taking high doses of vitamin D may improve your body’s response to insulin (insulin sensitivity) and reduce insulin resistance.

One 2022 study found that for each additional unit increase in vitamin D3 intake, the risk of insulin resistance decreased by about 18%.

It’s not clear how vitamin D supplements reduce insulin resistance. However, some research suggests it may be linked to vitamin D3’s ability to reduce inflammation in the body.

Your Blood Sugar Levels May Improve

Vitamin D might lower blood sugar levels in people with diabetes, especially in those who are vitamin D-deficient.

Studies have found that taking vitamin D supplements may help lower both fasting blood sugar (FBG) and HbA1c (a measure of average blood sugar over the past two to three months).

Still, research on the effect of vitamin D supplementation on blood sugar is conflicting.

Some research shows that while vitamin D may help lower blood sugar levels, the effect is mild. A 2023 study noted that vitamin D’s effect on blood sugar levels was more pronounced when higher doses were taken for a short time.

Some clinical trials did not observe an improvement in blood sugar levels in people with or without diabetes.

Your Diabetes Risk Might Get Lower

Daily use of vitamin D supplements may reduce the risk of developing diabetes. A 2023 study found a 14% lower risk of diabetes in people who took vitamin D supplements to increase their vitamin D levels.

Some researchers also recommend daily vitamin D supplementation in people with type 1 diabetes and people at high risk of type 1 diabetes, especially if you are vitamin D deficient.

Vitamin D may also delay diabetes progression in adults at high risk of developing type 2 diabetes.

What Research Says About Vitamin D and Blood Sugar

Decades of research suggest that people with low vitamin D levels have a higher risk of developing type 1 and type 2 diabetes.

Low vitamin D levels have also been found to affect the way your body responds to glucose (glucose intolerance) and may increase insulin resistance (where your cells don’t respond to insulin).

In a 2018 study that followed about 900 older adults for about 12 years, researchers found that compared with people with lower vitamin D levels (below 30 nanograms per milliliter (ng/ml)), people with vitamin D levels above 30 ng/ml had a lower risk of developing diabetes.

According to the study, having a vitamin D level of 30 ng/ml or more was associated with one-third the risk of developing diabetes. People whose vitamin D levels were even higher—50 ng/ml or more—had one-fifth the risk.

It’s unclear how low blood vitamin D levels trigger glucose intolerance or cause insulin resistance. However, some studies say it may be related to inflammation and immune system regulation.

What Experts Recommend

Taking a vitamin D supplement is generally safe and may be beneficial for blood sugar management, but it does not replace strategies proven to lower the risk of diabetes.

If you have a high risk of diabetes, your healthcare provider may recommend medications or diet and lifestyle changes to lower your risk.

Taking vitamin D daily? These 6 symptoms could signal kidney damage

Vitamin D is often called the "sunshine vitamin" and is widely recommended for strong bones, immunity, and overall well-being. In recent years, its use has increased sharply, especially after the pandemic, with many people taking supplements regularly without testing or medical advice.

While vitamin D deficiency can cause health problems, doctors caution that excessive intake can be just as harmful.

When taken in very high doses over time, vitamin D can raise calcium levels in the blood, a condition known as hypercalcaemia. This excess calcium puts enormous pressure on the kidneys, which are responsible for filtering waste from the body.

Over time, calcium can start depositing inside kidney tissue, leading to kidney stones, nephrocalcinosis, and even acute or permanent kidney failure. Recognising early symptoms of vitamin D overdose is crucial, as timely action can prevent long-term damage.

HOW VITAMIN D OVERDOSE AFFECTS THE KIDNEYS

Excess vitamin D forces the body to absorb more calcium than it needs. The kidneys must work harder to filter this excess calcium from the blood. Over time, calcium can build up inside the kidneys, forming stones or permanent deposits.

WHY DOES OVERDOSE OFTEN GO UNDETECTED?

Vitamin D overdose is often missed because early symptoms are vague and can be mistaken for common illnesses. Nausea, vomiting, fatigue, and confusion may not immediately raise suspicion.

Studies and case reports have shown that overdose can occur not only due to self-medication but also due to prescription or dispensing errors, especially when high-dose supplements are taken daily instead of weekly.

SIX SYMPTOMS OF VITAMIN D OVERDOSE TO WATCH OUT FOR

Nausea and vomiting: High calcium levels irritate the stomach and digestive tract.
Persistent thirst and frequent urination: The kidneys struggle to remove excess calcium, leading to dehydration.
Muscle weakness and extreme fatigue: Elevated calcium interferes with normal muscle function.
Confusion or poor concentration: The nervous system may be affected by an electrolyte imbalance.
Lower back or side pain: This may signal kidney stones or kidney stress.
Swelling in legs and breathing difficulty: In severe cases, kidney damage can cause fluid retention and shortness of breath, requiring urgent medical care.

HOW MUCH VITAMIN D IS SAFE FOR ADULTS?

According to health guidelines, most adults require about 400 to 1,000 IU of vitamin D daily. Regular intake above 4,000 IU per day can increase the risk of toxicity, especially if continued for months.

A common cause of overdose is mistakenly taking 60,000 IU capsules daily, even though they are meant for weekly use. Excess vitamin D raises blood calcium levels, which directly strains kidney function.

HOW TO PREVENT VITAMIN OVERDOSE

Doctors advise taking vitamin D supplements only under medical supervision. Blood tests should be done to check vitamin D and calcium levels before starting supplements and during long-term use.

Avoid combining multiple supplements that contain vitamin D, and never increase doses on your own. If symptoms such as vomiting, confusion, weakness, or frequent urination appear, medical help should be sought immediately.

Vitamin D plays an important role in keeping bones strong and immunity healthy, but more is not always better. Uncontrolled supplementation can quietly damage the kidneys and other organs.

Regular testing, proper dosing, and medical guidance are key to enjoying the benefits of vitamin D while avoiding serious and long-term health risks.