This is the one time you have permission to stick your tongue out. If it is a bit more vibrant than normal, specifically beefy-red in color, it could mean you have iron or B12 vitamin deficiencies. A color change means you should be concerned.

Disgusting to most, but sweat can indicate if there is something wrong in the body. An acetone-like smell probably means they’re suffering from low blood sugar. And if sweat smells a bit like ammonia, see a doctor since that could indicate an early sign of liver or kidney problems.

Faces apparently say a lot. Like men with wide face. A study from Nipissing University found that guys with a wider face tend to be more prone to cheating. These men have have a higher sex drive meaning they will look around and all that.

So that guy with ring fingers longer than his pointer fingers may have higher levels of testosterone in utero, which has surprising impacts on their health. Scientists say these men’s brains and bodies are different, and not always for the better.

Men with longer ring fingers are usually more aggressive than those with shorter ones. Such men are also more prone to developing autism, have less verbal communication abilities, and are likely to develop ADHD.

Who knew that the ear could indicate kidney health? A study showed that flat or crumpled looking ears relate to kidneys failing to develop in babies. Scientists also found that the ears and kidneys develop around the same time in the womb.

Outward deformities in the ear can indicate other kidney problems. Ear pits can indicate a number of kidney disorders and urinary tract issues.

A person suffering from swollen feet and legs could potentially be experiencing congestive heart failure. Heart failure obstructs blood flow, most especially in the extremities so take a good look at your feet. Go see a doctor as this condition also affects the liver and digestive system.

One study says that individuals with longs arms and legs are less likely to develop Alzheimer’s and dementia as they age. Scientists at Johns Hopkins University found that long-legged women were 16% less likely to get dementia. Then they found that women with short arms have a risk 50% higher compared to those with long arms.

It’s different for the men as those with longer arms are 6% less likely to get a brain disorder. Scientists are yet to pinpoint their reasons but nutrition could have something to do with the findings.

Type 2 diabetes is caused by the body struggling to utilize insulin. The disease causes frequent urination since it makes people feel thirstier than normal. Water is diverted from the less useful parts of the body to thin the blood and help process glucose. The frequent drinking of water leads to more urination.

Gum disease causes inflammation. The gums can recede, with periodontal disease now found to be linked to more than bad breath. It can cause an increased risk of heart disease and stroke. The condition is also linked to a lower birth weight for pregnant woman. Take good care of your oral health.

Arthritis causes joint pains for millions of people. Watch out for stiff joints which could be an early sign of the condition. Nail pitting can be a symptom that someone is suffering from the painful disorder. Look for finger nails with small depressions in them as that could show if a person has psoriasis.

Men going bald may indicate heart disease, and high cholesterol levels. These men are at higher risk for heart disease. A study also showed that men with a full head of hair and similar cholesterol levels were less likely to have heart disease. So men losing hair may need to schedule a visit with a doctor.

Could be indicative of thyroid issues or vocal cord problems.

Might be tinnitus, but could also suggest high blood pressure or other conditions.

Condition called pica; can indicate mineral deficiencies.

Acanthosis nigricans, potentially indicating insulin resistance.

While often benign, it can indicate stress, fatigue, or more rarely, neurological conditions.

Could indicate rhabdomyolysis.

Feeling of a burning sensation in the mouth without an apparent cause.

Sensing a smell that isn’t there can sometimes indicate neurological conditions.

Can suggest cholesterol issues (arcus senilis).

May be early signs of neurodegenerative disorders like Parkinson’s.

Might indicate hypothyroidism.

Could be Raynaud’s syndrome or circulatory issues.

Might suggest a problem with the kidneys or liver.

Xanthelasma, possibly indicating cholesterol issues.

Could be inflammatory breast cancer.

Might suggest an ALDH2 deficiency, common in some Asian populations.

Could indicate deep vein thrombosis.

Suggestive of Sjogren’s syndrome.

While common and benign, they can sometimes be associated with insulin resistance.

Could indicate hyperthyroidism.

Might suggest a condition called myasthenia gravis.

Could be scleroderma.

Might indicate vasculitis.

Can suggest a malabsorption disorder.

Could be clotting disorders or platelet issues.

Might indicate lupus.

Could be a sign of pulsatile tinnitus.

May suggest lymphedema.

While rare, can be associated with certain autoimmune diseases.

Could indicate psoriasis.

Might suggest periodontal disease.

Can suggest kidney issues or proteinuria.

Could indicate vitamin D deficiency or osteomalacia.

Might be a sign of scurvy (vitamin C deficiency).

Might suggest a nerve palsy.

Called Lhermitte’s sign, it might be an early sign of multiple sclerosis or other neurological disorders.

Could be related to liver disease, especially if linked to other symptoms like spider angiomas (small, spider-like capillaries visible on the skin).

Mostly white nails with a narrow pink band at the tip could be related to aging, liver disease, congestive heart failure, or diabetes.