The common beverage green tea is highly effective at killing a specific oral bacteria, *Fusobacterium nucleotum*. This particular bacteria has been scientifically linked to accelerating tumor growth in colorectal and breast cancer, providing a specific mechanism for green tea's health benefits.

Your body doesn't differentiate between the source of sugar molecules. Sugar from honey, agave, or freshly squeezed juice is processed the same way as sugar from a soda, leading to similar glucose spikes and health impacts. The 'natural' label is irrelevant to the biochemistry.

Applying cold, like cucumbers, constricts blood vessels to reduce swelling. However, prolonged application beyond 15 minutes can trigger a paradoxical effect, causing blood vessels to dilate and leading to increased inflammation, worsening the initial problem.

Rinsing your mouth with water after brushing removes beneficial ingredients like fluoride that protect your teeth, much like showering after applying sunscreen. Instead, you should only spit out excess toothpaste to leave a protective coating on your teeth.

Sipping sugary drinks over a long period forces saliva's pH to repeatedly shift from acidic to neutral, eventually failing and remaining acidic. Consuming sugar all at once allows saliva to neutralize the acid just once, minimizing the risk of tooth decay.

Research consistently shows that blue light from digital devices lacks the power to increase the risk of aging eye diseases or contribute to eye strain. The relief some users feel from blue light glasses may be a placebo effect or due to their anti-glare coating, not blue light filtration.

The vascular damage from sugar is direct and chemical. Excess glucose acts like glue, binding to and disabling the very enzymes that produce nitric oxide. This shuts down the body's ability to dilate blood vessels, leading to a cascade of health issues like hypertension and peripheral neuropathy.

The instinct to brush after consuming sugary or acidic foods is harmful because it mechanically grinds damaging substances into your tooth enamel. It is better to wait 30 minutes or chew sugar-free gum to neutralize saliva before brushing.

While specific, medically-approved red light therapies show promise for treating conditions like macular degeneration, consumer-grade devices bought online are often unstandardized. They can emit the wrong energy levels, potentially burning the retina and causing irreversible harm.