
SUPERSTITIONS often come off as quirks of culture — something to giggle at or follow “just in case.” For Filipinos, however, these beliefs are woven into daily life, from mealtime manners to how one greets a baby.
Interestingly, some superstitions, or “pamahiin”, have a scientific basis that may explain why these beliefs have stood the test of time. This is not about psychology, faith, or mere tradition — sometimes, science is the unseen force validating these ancient practices.
Take the fishermen’s belief in the “new moon rule.” Generations of coastal communities insist that fishing during a new moon is ideal, while a full moon is to be avoided. This is more than lore; it aligns with the scientific effect of moon phases on fish behavior.
During a new moon, the sky is darker, which reduces fish visibility and brings them closer to the surface where light from the fishing boat is brightest, unaware of nets and bait. This is when fish are more active and aggressive, particularly during dawn and dusk. The absence of moonlight also limits predators’ visibility, encouraging fish to school closer to shore. Marine biologists confirm this, showing that fish catch rates spike during darker nights.
Consider the pamahiin about sweeping at night, thought to “sweep away” blessings or money. In pre-electricity days, sweeping in low light could lead to the accidental loss of small valuables, such as coins. Poor visibility increases the risk of unknowingly discarding such items, turning “sweeping away blessings” into a practical warning. Thus, the “malas” or bad luck in this superstition actually stems from very real material losses due to poor lighting.
The tradition of resting after meals also has a scientific rationale. Digesting food requires blood to flow to the stomach, reducing circulation in other areas. Engaging in strenuous activities too soon after eating can lead to cramps, indigestion, or fatigue as the body struggles to manage digestion and physical exertion. Although early Filipinos may not have known about blood flow, they observed the discomfort associated with exertion after a heavy meal, giving rise to this wise custom.
The “usog” belief also shows practical wisdom. Many of us, especially elders, believe that young children should not be overly admired without saying “pwera usog” to prevent sudden illness.
This belief could be rooted in infants’ underdeveloped immune systems. Contact with adults — even those with mild infections — can easily overwhelm a baby’s immunity. Although “usog” may sound mystical, it reflects a precautionary attitude toward safeguarding children from potential illnesses through controlled exposure.
Cats as “lucky” charms on ships is another superstition grounded in hard science. Rats, known disease carriers, thrive on ships, where they chew ropes, contaminate food, and threaten supplies. Cats are natural hunters that keep these pests in check, preventing contamination and reducing the risk of infection. Thus, sailors believed in the “luck” brought by cats, which, in reality, acted as a form of natural pest control. (To be continued)/PN