8. Migraines


Can you smell migraines? Probably not, but your furry friend might! In a study conducted by the University of Pittsburgh, the link between dogs’ behavior and their owner’s health during a migraine was observed. The study found that dogs were able to recognize a migraine up to two hours before onset. However, bias was evident in the study, thus requiring the need for a closer investigation before any conclusions could be drawn.

Migraine attacks can cause severe pain for many hours and are usually accompanied by nausea and sensitivity to light and sound. There are warning signs to keep an eye on, like an aura, which can occur before a headache and can be experienced as light flashes, blind spots or tingling on one side of the face, arm or leg. Migraines progress in four stages: prodrome, aura, headache, and post-drome.

7. Arsenic Poisoning


Arsenic is a chemical that can be found nearly everywhere: in food, water, and the air. It can be incorporated into things like pesticides and bullets, but a common way for humans to come into contact with arsenic is through the contamination of groundwater. In fact, people living in a remote village in the Andes of Argentina appear to have developed a high tolerance to arsenic, equal to 20 times the safe limit.

Arsenic poisoning functions by blocking the enzymes that are essential for creating energy in the body. Symptoms of arsenic toxicity can include vomiting, vertigo, diarrhea, and eventually, death. A garlic odor is frequently found in people who have been exposed to arsenic and can be found in their breath and tissue fluids. Researchers have found garlic to be useful when combating the effects of arsenic.

6. Phenylketonuria


Phenylketonuria (PKU) is an inherited disorder where patients are unable to break down the amino acid phenylalanine. It is extremely important for people who have this disorder to be careful to avoid food containing phenylalanine, especially those that contain the artificial sweetener aspartame, which is found in diet soda.

When left untreated, PKU can lead to intellectual disability, seizures, and behavioral problems. There are several countries that screen newborns for this disorder, allowing parents to start immediate treatment. Interestingly, a side effect of PKU is a musty odor that has been described as “mouse-like”.

Related: 15 Diseases You May Not Realize Are Still in Existence


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