Whether you like it or not, hair plays a significant role in our lives.

Waking up with either a messy bedhead or perfectly styled hair can truly set the tone for a good or bad day.

However, hair goes beyond just aesthetics; depending on your natural hair color, it could influence how we respond to painkiller medication differently.

Redheads, in particular, who are more prone to freckles and sunburn, experience pain very differently compared to blondes, brunettes, and those with black hair.

According to the National Institutes of Health (NIH), studies have indicated that individuals with red hair may be more sensitive to certain pain types, yet sometimes possess a higher overall pain tolerance.

Anyone with red hair has been issued a warning over the use of painkillers (Lambert And Young / Getty Images)

Moreover, they often require higher doses of certain anesthetics.

Interestingly, when it comes to opioid painkillers, they generally need less - it's perplexing, indeed.

The root of this phenomenon lies in genetics, as redheads typically possess a variant of the MC1R gene, responsible for producing melanin, the pigment that determines our hair, skin, and eye color.

While most people produce more of the darker eumelanin, redheads mainly produce pheomelanin, leading to ginger tones, freckles, and skin that seldom tans.

Dr. David E. Fisher from Massachusetts General Hospital investigated this mystery using red-haired mice, with findings published in 2021 in Science Advances.

These mice, sharing the same MC1R variant as humans with red hair, exhibited a greater tolerance for pain.

Even when researchers bred them with albino mice to cease pigment production entirely, the red-hair gene still had an impact.

So, what’s the real science behind this?

The MC1R variant alters the way pigment-producing cells (melanocytes) synthesize certain hormones.

Typically, these cells produce POMC, a protein that breaks down into various hormones - some heightening pain sensitivity, others mitigating it.

Redheads' genetics can make a real difference in how they feel and respond to pain (Getty Stock Images)

In redheads, the levels of pain-enhancing hormones decrease, while pain-blocking opioid signals remain steady, resulting in a shift towards experiencing less pain overall.

"These findings explain the mechanistic basis behind earlier evidence indicating varying pain thresholds in different pigmentation backgrounds," Dr. Fisher stated. "Understanding this mechanism validates the earlier evidence and offers valuable insights for medical professionals when treating patients with varying pain sensitivities."

Based on research, doctors might advise redheads about certain considerations, such as their frequent need for higher doses of specific anesthetics (like those used in surgeries), as standard doses might be insufficient.

Additionally, they have distinct painkiller requirements; while opioids may be more effective (implying they might need less than the average person), other pain medications might require higher doses, so dosages should be carefully tailored.

There's also a risk of underestimating pain, as their bodies can sometimes block pain more effectively, causing redheads to be slower in noticing injuries or discomfort, potentially delaying treatment.

Finally, if medical personnel are unaware of these MC1R-related differences, they might assume redheads’ pain experiences are similar to others’, potentially leading to over or under-medication.