It's a frequent misconception that identical twins share fingerprints. Each twin has a unique set of fingerprints that convey a different tale, despite the fact that they may appear remarkably alike and share a lot of DNA.

Are you wondering how identical twins might differ so much from one another in such a small way?

Let's look at the intriguing science that underlies it.

Twin Types: Not All Twins Are Created Equal

To understand why fingerprints differ, we must first look at the two main types of twins—identical and fraternal—and how they form.

Twins That Don’t Look Alike, or Non-Identical Twins

Fraternal twins are produced when two different sperm fertilize two different eggs. Since they share about half of their DNA, they are genetically identical to any other sibling. But, what are fraternal twins? They are also known as dizygotic twins. They come from two separate eggs, fertilized by two different sperm. They also share about 50% of their genetic material, and have unique physical traits, often different sexes at birth too.

Because of this genetic variability, fraternal twins, like non-twin siblings, can have different sexes or distinct hair and eye colors.

Twins That Are Identical

Identical twins, on the other hand, develop from a single fertilized egg that divides into two embryos. Their DNA is almost the same, but not exactly the same, thanks to this process. Also known as the monozygotic twins come from a single fertilized eggs that splits into two embryos. These twin share the same genetic material, which is what leads to their identical physical traits and the same sex at birth. However, there are slight differences that can emerge due to environmental factors during pregnancy, including the space in the womb.

According to a 2021 study referenced by Smithsonian Magazine, only 38 pairs of identical twins and two sets of triplets had completely identical genes. Because of their tight genetic ties, they have remarkable physical similarities, such as similar skin tones, eye colors, and hair colors. However, minor distinctions like height, weight, and fingerprints distinguish them.

Fingerprints: Not Just Genetic Information

Although fingerprint patterns are influenced by heredity, environmental variables within the womb provide a twist.

Experts in forensic science say there is almost little likelihood that identical twins' fingerprints will match. Although they may have similar overall characteristics, such ridges and loops, the specifics are different.

The following factors affect fingerprints:

• Access to nutrition during pregnancy
• The length of the umbilical cord influences blood flow.
• Growth rates of fingers
• Placement inside the womb
• Both DNA and these environmental influences shape fingerprints, which are fixed for life by the 13th to 19th week of foetal development.

Solving the Fingerprint Mysteries

According to some research, twins' fingerprints could seem similar at first glance, but a deeper look reveals variations in the pattern branches and ridge spacing.

According to the National Forensic Science Technology Centre, no two individuals—not even identical twins—have ever been found to have the same fingerprints.

It adds even more individuality because even your own fingers have different prints!

Arthritis is often associated with ageing, but it can also affect children. The most common form of chronic arthritis in children under 16, including those as young as 1, is Juvenile Idiopathic Arthritis (JIA).

Because its early symptoms can be subtle, JIA often goes unrecognized, delaying diagnosis and increasing the risk of joint and growth-plate damage.

Children May Not Say They Are In Pain

Young children may not know how to describe joint pain. Instead, they may change their behavior to avoid discomfort, making it important for parents to notice changes in movement and activity.

A toddler may limp, take longer to get ready or become less active, Dr. Rashmi Jinnakeri, Consultant Pediatrician, Apollo Hospital, Bengaluru, told HealthandMe. These signs may be mistaken for a viral infection, growing pains or simple clumsiness.

Also read: Too Much Cow’s Milk Linked To Severe Iron Deficiency In Toddlers, Including Three Deaths

Signs Parents Should Watch For

Unlike an injury, JIA symptoms tend to persist, Dr. Chirag Rajkumar Kopp, Consultant – Clinical Immunology & Rheumatology, Ramaiah Memorial Hospital, told HealthandMe.

Parents should watch for:

• Joint pain or swelling lasting more than six weeks
• Morning stiffness that improves during the day
• Neck or lower back pain with stiffness
• An unexplained limp
• Recurrent fever without an obvious cause
• Skin rashes
• Red eyes or sensitivity to light

Morning sluggishness:

A child who normally wakes up energetic may suddenly take much longer to get out of bed, get dressed or start moving. Similar stiffness or sluggishness may occur after an afternoon nap. This can be one of the more subtle signs of JIA in young children.

Sudden clumsiness:

Parents may notice a child dropping objects, tripping, coloring messily or struggling with buttons and zips. Subtle limping after waking may also occur and can improve as the day progresses.

Avoiding play and physical activity:

Children may begin avoiding sports, physical education or activities they once enjoyed. A child who previously loved running and jumping may increasingly prefer to sit or find reasons not to participate.

Going back on milestones:

Some toddlers may show regression in movement. A child who was walking may start crawling again or frequently ask to be carried. Mild swelling, particularly around a knee, can also be overlooked. If only one joint is affected, parents may assume the child bumped it while playing.

Fatigue, fever and rashes:

Some children may appear unusually tired, have low energy or repeatedly say they cannot walk. Fleeting rashes with fever may be mistaken for viral infections. Repeated low- or high-grade fever without cough, cold or vomiting can also occur.

Read More: 'Let's Fix Our Food': India Launches New Policy To Fight Childhood Obesity, Boost Nutrition

Growing Pains vs Juvenile Arthritis?

Children may describe both conditions simply as “leg pain”, making the distinction difficult, Dr. Rashmi said.

Growing Pains

• Usually occur later in the day after physical activity
• Often affect the thighs, calves or shins
• May improve with massage
• Do not cause joint swelling or redness
• Are usually gone by morning

Juvenile Arthritis

• Is often worse in the morning
• Causes joint-related pain and stiffness
• May cause swelling or redness
• Can improve with movement
• Persists over time, potentially for six weeks or longer

Early Diagnosis Matters

JIA occurs when the immune system mistakenly attacks healthy joints, causing inflammation. The exact cause is not known.

“When this goes unrecognized for too long, the effects don't simply fade with time. Joint damage can become permanent; a child's growth can be affected, and the disability that follows may last well into adulthood,” Dr. Chirag said.

Early treatment with disease-modifying antirheumatic drugs (DMARDs) and, when needed, biologic therapy can control inflammation and help prevent lasting damage. With early recognition and treatment, most children can achieve symptom control and continue to run, play and grow without limitation.

A blood test is considered the first step towards fertility enquiries, but for many, the results might seem like a confusing jumble of numbers and acronyms. Reports sometimes contain terms like AMH, FSH, LH, AFC, and estradiol, which can confuse patients into thinking that a single "abnormal" figure indicates they are unable to conceive.

The truth is more reassuring, and more nuanced. Fertility experts stress that a single test cannot ascertain a person's fertility. Instead, these markers serve as parts of a bigger picture, assisting fertility specialists in comprehending reproductive health and suggesting the best course of action when necessary.

Fertility tests are guides, not verdicts

The idea that a single blood test can determine whether a woman would naturally become pregnant is one of the most widespread myths. Age, egg quality, ovulation, sperm health, uterine health, lifestyle, and underlying medical issues are some of the factors that actually affect fertility.

Although diagnostic markers offer useful information, they must always be interpreted in conjunction with the couple's overall reproductive profile, clinical history, and ultrasound results.

Understanding the ovarian reserve 'AMH'

Anti-Müllerian Hormone (AMH) is perhaps the most talked-about fertility marker today. It is produced by small follicles present in the ovaries. AMH reflects ovarian reserve, which identifies the estimated number of eggs remaining in the ovaries. High AMH indicates larger ovarian reserve, whereas lower levels suggest fewer eggs. However, it can neither measure egg quality nor guarantee the ability to conceive naturally.

Many women with low AMH can still achieve successful pregnancies, especially if they continue to ovulate regularly. Similarly, women with high AMH are not necessarily more fertile; elevated AMH levels in women also mean Polycystic Ovary Syndrome (PCOS), where ovulation may actually be irregular. For fertility specialists, AMH is useful in predicting the number of eggs that are likely to respond to ovarian stimulation medication, based on which they customize IVF treatment.

FSH determines ovarian function

Our pituitary gland produces Follicle Stimulating Hormone (FSH), and this hormone helps in stimulating egg development.

Usually, the second or third day of the menstrual cycle is when FSH is measured. If ovarian reserve is reduced, higher-than-normal levels may imply that ovaries need more stimulation to mature eggs. From cycle to cycle, the FSH levels change.

LH and the ovulation story

FSH and luteinizing hormone (LH) cooperate to control ovulation. The ovary releases a developed egg in response to an increase in LH. LH levels may be disproportionately greater than FSH in PCOS-affected individuals, which can lead to irregular menstrual periods and ovulation. Instead of using LH alone, fertility specialists assess it in link with other hormone markers.

Estradiol and AFC: Completing the picture

An indicator of ovarian activity during the menstrual cycle is estradiol (E2), a type of estrogen generated by growing follicles. Combined interpretation is crucial since elevated early-cycle estradiol levels can occasionally conceal an elevated FSH.

The Antral Follicle Count (AFC), which is done via a transvaginal ultrasound, is another crucial evaluation. AFC gives an additional indication of ovarian reserve by counting the number of visible tiny follicles in the ovaries.

Indeed, the combination of AMH and AFC provides a more thorough insight than any test by itself.

Fertility evaluation isn't just for women

Female hormone testing frequently receives greater attention, whereas male fertility contributes to roughly half of all infertility issues. A semen screening remains one of the most significant and cost-effective tests, measuring sperm count, mobility, and morphology. When necessary, additional hormonal or genetic tests might be suggested.

Era of self-diagnosis

After getting a test report, many people search the web for quick answers, but those numbers without proper medical context from a specialist can cause unnecessary tension. The fertility markers depend on a variety of factors, some of which include: age, weight, menstrual history, prior pregnancies, medications, hormonal status, and lifestyle. Therefore, understanding parameters like “low” or “high” online may create confusion for individuals. Instead, consult a fertility specialist to decode the report.

(Dr Rubeena Zainab, Senior Consultant - Reproductive Medicine, Milann Fertility and Birthing Hospital, Bengaluru)

For new mothers struggling with breastfeeding, artificial intelligence can offer something doctors often cannot: an answer at 2 am.

But a new report is raising concerns about what happens when those instant responses replace professional medical advice.

A national survey commissioned by Orlando Health found that 51% of women aged 18 to 44 would first turn to an AI chatbot, social media platform or search engine if they had an urgent breastfeeding question.

Only 29% said they would first contact a doctor or lactation consultant, while 21% would turn to family or friends.

The findings highlight a growing challenge as new parents increasingly use AI to navigate pregnancy, caring for their infants and breastfeeding.

Is AI Advice Always Reliable?

AI can quickly explain clinical terms, suggest possible causes for a problem and provide general breastfeeding information. But it cannot examine whether the baby is actually getting enough milk.

“There are certain questions that can't be answered by AI,” said Erynne Bowers, M.D., a pediatrician with Orlando Health Physician Associates.

Bowers said roughly one-third of mothers who come to her with breastfeeding concerns have already received inaccurate advice from AI. Some of the misinformation involves recommendations about how much milk a baby should consume or how frequently the baby should be fed. The expert says that's where generic advice from AI can become misleading and dangerous.

Also read: Could Light-Controlled Nanobots Revolutionise Breast Cancer Treatment? Indian Researchers Explore The Possibility

Feeding Pattern Is Different For Every Baby

A baby's nutritional needs depend on several factors, including age, birth weight, growth trajectory, medical history and feeding efficiency.

Doctors also examine the baby's weight gain, hydration, urine and stool patterns, alertness and developmental progress. They may observe the baby's latch, tongue movement and coordination between sucking, swallowing and breathing. These assessments cannot be done by an AI chatbot.

A baby may spend a long time at the breast but transfer very little milk. Another may feed for a shorter period but feed efficiently. A generic feeding schedule therefore cannot explain the entire problem.

Also read: Breastfeeding Can Help Reduce Mothers' Risk of Type 2 Diabetes, Breast Cancer and More

How Incorrect Advice Can Create A Cycle?

Experts warn that telling a mother to feed less frequently, for example, could potentially reduce the baby's calorie intake while also lowering breast stimulation.

The report also describes the experience of Florida mother Emily Hunziker, whose newborn son began losing weight despite her efforts to breastfeed exclusively.

She worked with a pediatrician and lactation specialist, used a combination of pumping, bottle-feeding and supplemental formula while continuing to support her breastfeeding goals. Her son is now thriving and growing up well.

Also read: Breastfeeding Vs Mixed Feeding: Which Is Right For Your Baby? Experts Explain

Should New Mothers Stop Using AI For Breastfeeding Advice?

It does not mean that new mothers should completely stop using AI. AI can be useful for understanding medical terminology, preparing questions for a doctor or finding reliable resources. But it should not become the final decision-maker when an infant's nutrition or growth is at stake.

Warning signs like poor weight gain, unusual sleepiness, dehydration, persistent vomiting, breathing difficulties, severe pain or a sudden drop in feeding require medical assessment from a doctor rather than an automated generic advice.

Relying excessively on an AI chatbot for answers may delay seeking a physician's help which could, in turn, delay clinical examination and treatment.