Mitochondria are often called the powerhouses of our cells because they produce most of the energy our bodies need to function. However, their role goes far beyond energy production. They also help regulate metabolism, muscle function, hormone production, cellular repair, and the natural process of aging. The good news is that our daily habits can influence how well our mitochondria function. Exercise, nutrition, sleep, and other lifestyle factors can all play a role in maintaining mitochondrial health. 1. Understanding how mitochondria work Mitochondria use energy derived from carbohydrates and fats, together with oxygen, to produce ATP (adenosine triphosphate). ATP is the primary energy currency our cells use to perform essential functions. This energy supports activities such as: - Muscle contraction and physical movement. - Brain function and communication between nerve cells. - Heartbeat and circulation. - Tissue repair and cellular maintenance. - Temperature regulation and metabolic processes. Mitochondria also help regulate calcium levels, initiate programmed cell death when cells are damaged, and participate in the production of steroid hormones. Another important feature is their ability to adapt. Mitochondria can grow, multiply, join together, divide, and remove damaged components through a process called mitophagy. This ongoing maintenance helps preserve their function. As we age, mitochondrial function can decline. However, physical inactivity, metabolic health, and other lifestyle factors also influence this process, so aging does not automatically mean that mitochondrial health must deteriorate rapidly. 2. Exercise: The most effective way to support mitochondrial health Exercise is one of the best-supported ways to improve mitochondrial function. When we exercise, our muscles need more energy, which sends signals that encourage the body to build new mitochondria and improve the efficiency of existing ones. These adaptations can occur at different ages and are not limited to elite athletes.

Approximately 1 in 4 Americans over 40 takes a statin. But how many understand the actual benefits and risks? One important measurement is the Number Needed to Treat (NNT): how many people must take a medication to prevent one cardiovascular event? For people without previous cardiovascular disease (primary prevention), approximately: • 200 people must take statins for about 5 years to prevent one nonfatal heart attack. • 500 people must be treated to prevent one cardiovascular death. • For patients with previous cardiovascular events (secondary prevention), the NNT is substantially lower, around 40. In medicine, this is one of the worst NNT we have ever since. IN other words, they are among the less effective drug ever created. What about side effects? • Muscle symptoms: 20–30% in those taking a statin which is about 40-150 persons. • Type 2 diabetes: Statins increase diabetes risk about 6-10% which represents 12-50 persons. • Cognitive symptoms: Memory complaints have been reported at about 25% which represents 50-125 persons • Cancer risk of about 1% which is 2-5 persons. • CoQ10: Statins reduce circulating CoQ10, but the clinical significance remains uncertain. LDL cholesterol is not inherently harmful. LLDL particles transport cholesterol throughout the body. Cholesterol is essential for cell membranes, hormone production, and vitamin D synthesis. Elevated LDL alone does not necessarily mean someone has arterial plaque. Statins lower LDL but don't address every cardiovascular risk factor. Lowering LDL doesn't necessarily correct underlying metabolic dysfunction. 3. Metabolic health deserves greater attention: • Insulin resistance and elevated blood sugar • High triglycerides • Visceral fat accumulation • Chronic inflammation • Overall metabolic dysfunction 4. Lifestyle interventions should be central to prevention like improving insulin sensitivity, reducing visceral fat, building muscle, improving sleep, controlling inflammation, and adopting sustainable lifestyle habits.

Hi Serge, You're out for a jog on a chilly morning, wearing layers, and working up a sweat. You should feel thirsty. But you don't. Cold exposure blunts blunts your thirst signals by up to 40%, even when you're already dehydrated. Researchers believe this comes down to a process called peripheral vasoconstriction: The blood vessels near your skin narrow in the cold, shifting blood toward your core. Sensors near your heart pick up all that extra blood and conclude you're well-hydrated — even if you're not. So your body dials down your thirst signals. The cold also sends you to the bathroom more often. Some researchers suspect that the cold raises your blood pressure, and your kidneys respond by flushing out extra fluid and electrolytes. So you're losing more fluid right when your thirst gets less noticeable. You can see this effect in the data. In one trial, participants exercising in the cold replaced only 33% of the fluid they lost. When they did the same workout in warm conditions, they replaced 51%. What does that mean? In colder temps, you might feel less thirsty but could still be struggling to address your hydration needs.

#1. First, UV light. UV light reacts with cholesterol in the skin to form vitamin D. Vitamin D is critical to immune function and the absorption of calcium and many other minerals. UV light has also been shown to reduce blood pressure, reduce cholesterol, increase the efficiency of the heart, improve metabolism, increase weight loss, improve hormonal profile, improve the gut microbiome and increase libido. This recent study in cell reports showed that UV light exposure in the skin & eyes increased testosterone production & libido. Russia was recently caught "doping" by using UV light therapy after the Russian athletes all looked darker than they normally would and cleaned up at the Olympics. UV is tremendously beneficial...but what about all the "harms"? Too much UV light is definitely bad, just like how too much oxygen and water can kill you. Overexposure, to the point of burning, can increase your risk of skin cancer. However, these dangers have been exaggerated beyond belief. This review found that the benefits of UV exposure decreasing the risk of more deadly forms of cancer, Alzheimer's, diabetes, and macular degeneration, outweighed the risks of nonburning sun exposure. Dr Helen Shaw found that the people who had the lowest risk of developing skin cancer were those whose main outdoor activity was sunbathing. Twice the risk of developing melanomas was found in office workers who had to work indoors all day under fluorescent lights. This doesn't mean that you should necessarily use tanning beds either, isolated UV without the protective red and infrared light can be harmful. Lastly the deadliest skin cancers, melanomas, often occur on areas of the body not exposed to the sun. #2. The sun is very bright... Sunny days are anywhere from 100-1000x brighter in terms of LUX than indoor lighting. Brightness has a profound effect on mood, fertility and libido. People with seasonal effective disorder from lack of bright lack have higher incidences of fatigue, sickness, insomnia, depression and suicide.

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