It seems that "exercise snacks" can be a good way to improve your health. Research shows that short bursts of activity done during the normal course of your day can help you build fitness – with no sweating required. Listen in as exercise physiologist Katie Lawton explains. pic.twitter.com/4dpEiWbCTM
Some have called bananas “nature’s perfect snack,” and it’s easy to see why. The curvy yellow fruits come conveniently packaged, travel well in a lunch bag or purse and are incredibly versatile. They make a great smoothie mixer or a tasty topper on cereal or oatmeal and even have their very own category of (delicious!) muffins and bread.
Are bananas healthy?
“Absolutely,” says registered dietitian Elyse Homan, RD, LD. “They’re full of nutrients and easy on the gut. Very few people have problems digesting bananas.”
So, what are you eating when you peel and enjoy? A medium-sized ripe banana contains:
105 calories.
1 gram of protein.
28 grams of carbohydrates.
15 grams of (natural) sugar.
3 grams of fiber.
Less than 1 gram of fat.
Health benefits of eating bananas
From vitamins to minerals to fiber, bananas are good for you, with lots of nutrition to offer. Plus, they’re easy to digest, reiterates Homan. Here’s a breakdown of banana’s most notable nutritional benefits:
1. Fiber for improved digestion and disease prevention
With 3 grams (g) of fiber, a banana supplies nearly 10% of what you need in a day, based on a 2,000-calorie daily diet, according to the U.S. Department of Agriculture (USDA) dietary guidelines.
You hear “fiber” and probably automatically think of digestion. It’s true — fiber is great for your gut. It helps keep things moving in your intestines, and most of us probably need to eat more.
Vitamin C (ascorbic acid) is a nutrient that helps your body absorb iron and boosts your immune system’s ability to fight illness. Adults need 75 to 90 milligrams (mg) per day. A banana delivers about 10 mg of vitamin C.
Vitamin C is one of many antioxidants you can get from food. Antioxidants are important because they cancel out free radicals in your body. Free radicals can build up and damage your cells, leading to disease. But antioxidants like vitamin C keep free radicals in check.
“One banana will give you one-quarter to one-third of the vitamin B6 you need in a day,” says Homan.
4. Potassium for organ health and lower blood pressure
The USDA recommended daily intake of potassium for adults is 4,700 to 5,000 mg. A banana supplies you with about 422 mg, or a little less than 10% of what you need per day.
Potassium, a mineral, does a lot for your body. It’s essential for the proper function of your:
Heart.
Kidneys.
Muscles.
Nerves.
Getting enough potassium also keeps your blood pressure in a healthy range. Potassium, which lowers blood pressure, balances out sodium, which raises blood pressure.
Homan says potassium also benefits your vascular system — the network of blood vessels and lymph vessels that run through your body’s tissues and organs — and reduces your risk of:
Heart disease.
Kidney failure.
Stroke.
5. Magnesium for improved blood pressure, blood sugar and more
A single medium-sized banana offers about 32 mg of the mineral magnesium, which fulfills around 8% to 10% of your daily magnesium requirement.
Magnesium is involved in many processes in your body, including:
Blood pressure.
Blood sugar levels.
Building proteins.
Maintaining bone.
Muscle function.
Nerve function.
Bananas and resistant starch
Green, or unripe, bananas are high in resistant starch. “Your body can’t digest resistant starch,” notes Homan. “Instead, it’s a prebiotic that promotes the growth of good bacteria in your colon.” Prebiotics improve digestive health and can be helpful if you’re experiencing diarrhea.
“I often hear patients say they avoid bananas since they’ve heard the fruit is too high in sugar,” says Homan. As bananas ripen, much of the resistant starch changes to sugar. But the health benefits of antioxidants and fiber outweigh the naturally occurring sugar. For those worried about blood sugar levels, pair bananas with a protein source such as peanut butter or a cheese stick for better control.
A small word of warning about unripe bananas: “If you’re not used to eating resistant starch, start slowly to let your body get used to it. Some people can experience constipation, gas and bloating at first,” adds Homan.
Another plus of this fruit? In addition to all the health benefits of bananas, they’re less expensive than many other fruits.
Ironically, not every pear is “pear-shaped.” One variety, Asian pears, is actually shaped like an apple. But no matter their shape, all pears are rich in disease-fighting nutrients.
“Pears are so healthy, and most people tolerate them very well,” says registered dietitian Beth Czerwony, RD, LD. “They’re terrific for your digestion and have other impressive health benefits. They’re a perfect snack if you’re craving something sweet.”
Types of pears
Pears are members of the Rosaceae plant family, along with apples, apricots, cherries, peaches and several other fruits and berries. Pears can range in texture, color, crispness, juiciness and sweetness. Common varieties you may find in the grocery store include:
Anjou (green or red).
Asian.
Bartlett.
Bosc.
Comice.
Concorde.
Forelle.
Seckel.
Starkrimson.
Health benefits of pears
Are pears good for you? Absolutely. Pears are a great source of antioxidants, fiber, potassium and vitamin C. But they’re not just full of nutrients — they also may lower your risk of some diseases. Here are five ways pears boost your health.
1. A nutritious source of vitamins and minerals
Like most fruit, pears are a source of good nutrition. One medium pear has approximately:
Nobody enjoys the dreaded crash that happens after sugary foods spike your blood glucose. Steady blood sugar means a steady supply of energy, which is healthier for your body. Blood sugar management is even more important if you have diabetes.
Czerwony says pears may help stabilize blood sugar and even reduce your risk of Type 2 diabetes. How? Fiber, for starters. A medium pear offers nearly one-quarter of the fiber you need in a day. Fiber helps keep blood sugar steadier by slowing your body’s absorption of sugar.
Pears also contain anthocyanin, an antioxidant. An observational study suggests a link between eating anthocyanin-rich foods and a lower risk of Type 2 diabetes.
Another study showed that eating pears could significantly lower your odds of developing Type 2 diabetes. For each serving of pears eaten per week, researchers found a 3% lower risk of Type 2 diabetes.
In addition, pears are a low-glycemic food, which means they won’t spike your blood sugar like sugary foods and some fruits can.
3. Relieves constipation and improves digestive health
Fiber adds bulk to and softens your stool, which helps things move along in your gut. Lots of foods contain fiber, but pears are a particularly excellent source.
A single pear contains 6 grams of fiber (more than 20% of what an adult needs in a day). And pectin, a type of fiber in pears, has some specific benefits. Pectin is a soluble fiber known to help:
Constipation: In a study of 80 people with constipation, pectin significantly improved food movement through their digestive systems and reduced symptoms.
Gut microbiome: Pectin promotes the growth of good bacteria in your colon, according to a review of several studies, helping your microbiome stay healthy.
To reap the fibrous benefit of pears, don’t skip the skin. “Pear skin contains a significant amount of the fruit’s total fiber content,” notes Czerwony.
4. Lowers inflammation
Inflammation happens when your immune system tries to protect you from something — an infection, a toxin or some other offender. Some temporary inflammation is actually a healthy response to these things. But when inflammation hangs around, it can contribute to diseases such as Alzheimer’s, asthma, cancer and Type 2 diabetes.
Antioxidants are nutrients that can prevent some of the cell damage that leads to inflammation. Pears are rich in powerful types of antioxidants called flavonoids.
Research shows that flavonoids can reduce inflammation and lower the risk of:
Potassium, known to help reduce high blood pressure — another risk factor for heart disease.
In addition, a study examining the effects of fruit and vegetable consumption suggests eating pears lowers your risk of stroke. And one large clinical trial showed a link between eating pears and a lower risk of dying from heart disease.
Are fresh, canned or frozen pears better?
“In general, fresh fruits are best because they have the highest amount of nutrients,” explains Czerwony. “Frozen is usually a close second to fresh. The heat of canning, though, can break down certain nutrients.”
But don’t avoid canned pears completely. They’re still good for you. She advises looking for pears in water rather than syrup, which adds unneeded sugar.
“You might be surprised by what you can do with fresh pears,” she adds. “Think of how you use apples — sliced raw, in pies or baked — and you can do all those things with pears.”
It seems that "exercise snacks" can be a good way to improve your health. Research shows that short bursts of activity done during the normal course of your day can help you build fitness – with no sweating required. Listen in as exercise physiologist Katie Lawton explains. pic.twitter.com/4dpEiWbCTM
Protein in Greek yogurt: Greek yogurt is a protein powerhouse. It has almost twice the protein of traditional yogurts and provides the same gut-friendly bacteria. #HarvardHealth
We all want to protect our kids whether it be from falls, bumps and bruises — or avoidable infections and diseases. To help your child avoid illness, it’s important to encourage good habits and take steps to boost their immune system from an early age.
“Most of what makes a child’s immune system strong is common sense,” says pediatrician Adriane Lioudis, MD. If you keep these five tips in mind, you’ll stack the deck in your child’s favor for a healthier life.
1. For newborns, consider breastfeeding
While it’s a very personal decision (that isn’t always possible), if you are able to exclusively breastfeed your child for at least six months, it may have benefits. Some research shows that breastfeeding your child might possibly reduce allergies, Dr. Lioudis says.
2. Promote regular hand washing
Eighty percent of infections are spread by touch. Teach your little one to take the time to wash their hands after sneezing, coughing and going to the bathroom. Washing hands with warm water and soap for at least 20 seconds can remove bacteria and viruses and can reduce the chance of lung infections by up to 45%.
“Get the flu shot for your child yearly, as well,” Dr. Lioudis says. This is particularly important for children with asthma and other chronic health conditions.
Also, if your family will be traveling internationally, it’s important to seek advice from your child’s healthcare provider about any needed vaccinations.
4. Make sleep a priority
To maximize immunity, children must get enough sleep.
Babies between 0 and 3 months need 14 to 17 hours of sleep. Those between 4 and 12 months need 12 to 16 hours of sleep.
Children between the ages of 1 and 2 need between 11 and 14 hours.
Kids between the ages of 3 and 5 should get from10 to 13 hours.
Children ages 6 to 12 should get between 9 and 12 hours.
Teens between the ages of 13 to 18 need 8 to 10 hours.
Not getting enough sleep limits the body’s ability to produce proteins called cytokines that help fight infection and reduce inflammation.
5. Encourage a healthy diet
A healthy diet is also important for your child’s immune system.
Dr. Lioudis recommends encouraging your child to “eat the rainbow” when it comes to fruits and vegetables. A good selection of whole grains should be part of their diet as well. Keep processed foods to a minimum. Proper food choices can help ensure that your child gets enough vitamins — such as vitamin A and E. These vitamins are needed to maintain good health and a strong immune system.
You can’t avoid all illness, but some kids need extra protection
“Even if you follow these tips, your child might still get between seven and 11 colds each year,” says Dr. Lioudis. She adds that you can expect each one to last up to two weeks.
Also, keep in mind that some things billed as common “remedies” aren’t effective in boosting immunity. For example, there’s no definitive proof that large amounts of vitamin C or echinacea help prevent colds or shorten them, she says.
However, if your child has a compromised immune system, work closely with your pediatrician to find ways to improve his or her immunity. Each child needs a personalized approach because their individual immune system varies, Dr. Lioudis says.
“There’s generally a different protocol with immunocompromised children. There are some vaccines we have to add in on top of what most children have, but it’s something that we must determine on a case-by-case basis.
You know exercise builds muscles, strengthens bones, keeps your heart healthy and your mind sharp. But it also does something that you might not think much about: It helps keep your immune system — your internal defenses against infection — in tip-top shape.
If you take time for some physical exertion each day, it helps get your body ready to attack bacteria, viruses and toxins that can sneak in and make you sick.
But how much exercise is effective? Do too little or too much, and it won’t have the best effect on your immune system.
Clinical immunologist Leonard Calabrese, DO, answers common questions about how exercise can impact your immunity and how to use your workouts to shut out a world of would-be invaders.
Q: How does breaking a sweat boost immunity?
A: If you exercise moderately on a regular basis, it tunes up the immune system in many ways. It enhances your broad-based defenses against viral infections, such as those causing upper respiratory infections.
Working out regularly also reduces the risk of many chronic diseases such as cardiovascular, respiratory illnesses and metabolic diseases, such as type 2 diabetes.
Q: How much exercise do you need?
A: Fortunately, you don’t have to push yourself to the limit to rev up your immune system. In fact, your immune system needs less of a workout than you get with your average cardio routine.
Focus on getting 20-30 minutes of moderate exercise, five days a week, and your immune system will thank you.
Q: What types of exercise are most helpful?
A: Moderate exercises, including biking or walking briskly in your neighborhood, are good ways to get your blood flowing. Swimming is also a good option for non-weight-bearing exercise for your joints.
Also try mind-body exercises such as Tai-Chi, Qi Gong and yoga, which are all options that help keep your joints flexible. These exercises also reduce chronic stress, which in itself is a powerful immune booster. These exercises can also help alleviate osteoarthritis and fibromyalgia symptoms.
Q: Can too much exercise set your immune system back?
A: Yes, though, the level to which it can slow your system down is still up for debate.
Research shows that exercising for more than 1.5 hours without refueling your body or giving it enough time to recover suppresses your immune responses for up to a few days. During that time, your cortisol levels rise, your white blood cell count drops and you’re more likely to develop a respiratory infection.
This problem usually affects elite athletes, such as marathon runners, most.
On the flip side, staying sedentary also increases your risk of infection, inflammation and chronic disease.
Q: Can exercise make an illness worse?
A: Yes, it can. This is a complex issue, but I like to tell my patients to do a “neck check.” If your symptoms are mostly of a mild cold without fever or lower respiratory symptoms, such as a productive cough, wheezing or shortness of breath, mild exercise can actually reduce congestion and may make you feel better.
If your symptoms are primarily in your lungs or you have a significant fever its better to rest until things settle down. Regardless, good hydration is important.
When you’re pregnant, it’s important to eat a healthy diet that provides the nutrients you need. That helps keep you feeling your best and promotes healthy fetal development. But pregnancy also puts you at higher risk for foodborne illness. Some foods and drinks can increase your risk for pregnancy complications. Avoid high-mercury fish and processed meat, and go easy on salt and caffeine.