Quotes of the Day

The public has been conditioned to believe that dental cleanings are for the benefit of their teeth. The truth is that professional cleanings may reduce deposits, but they cannot stop the regrowth of acid-loving bacteria, and cleanings themselves cannot strengthen or protect your teeth. No amount of brushing, flossing, or professional cleanings can completely rid your mouth of bacteria. Unless you remove the conditions that promote harmful bacterial problems, more harmful bacteria will grow back and any cycle of damage will be repeated. [2025] - Ellie Phillips

NAD is a product of the vitamin niacin and boosts the activity of all 7 sirtuins. A form of vitamin B3 called nicotinamide riboside, or NR, is a vital precursor of NDA. NR, which is found in trace levels in milk, can extend the lifespan of yeast cells by boosting NDA and increasing the activity of Sir2. Once a rare chemical, NR is now sold by the ton each month as a nutraceutical. A chemical called nicotinamide mononucleotide, or NMN, is a compound made by our cells and found in foods such as avocado, broccoli, and cabbage. In the body, NR is converted into NMN, which is then converted into NAD. [2019] - David A. Sinclair

I recommend that nearly all of my patients take cod-liver oil after the biggest meal of the day. It's a great source of vitamins D, A, and various essential fatty acids. Cod liver wraps them all up in one neat, metabolically available package. [2018] - Steven Lin

Positive stress (challenge stress) energizes. Our body automatically reacts to a stressful event within seconds and also reacts to our thoughts about the event. When we start to notice the stress response in our muscle tension, heart rate, and breathing, we can relabel it by saying, "This is good stress, energizing me so I can perform well!" this can help shape the body's response to be more energizing, bringing more dilation to the vessels and more blood to the brain. [2017] - Elizabeth Blackburn

Multiple studies in midlife and older adults indicate that sleep disturbance is the risk for late-onset dementia. Note the 7-hour cutoff for association with the lowest hazard ratio. After 7 hours, more sleep is associated with more risk. Other cardiovascular factors are tied to risk of Alzheimer's and all-cause dementia, including a very high HDL, high LDL, and elevation of systolic blood pressure. A retina image is independently helpful for prediction of high risk. Speech, analyzed with AI methods, can predict Alzheimer's disease within 6 years. People deemed at high risk must undergo further assessment and close surveillance. This includes a conventional brain MRI, or a resting-state functional MRI that can further differentiate risk and predict the disease up to 9 years in advance. [2025] - Eric Topol