Search results
People also ask
Are multivitamins good or bad for You?
Is taking a multivitamin a good idea?
Is taking a multivitamin for a long time dangerous?
It provides vitamins, minerals and good fats. Choosing whole grain side dishes, cereals, breads and more may lower the risk for heart disease, type 2 diabetes and cancer and improve digestion, too. Saturated fat : A type of fat found in abundance in butter, whole milk, ice cream, full-fat cheese, fatty meats, poultry skin, and palm and coconut ...
Dec 8, 2022 · In a summer 2022 nationally representative Consumer Reports survey (PDF) of 3,070 U.S. adults, about half of people said they take multivitamins and 42 percent said they take individual vitamins ...
- Overview
- What are multivitamins?
- What do multivitamins contain?
- Multivitamins and heart disease
- Multivitamins and cancer
- Do multivitamins have any other health benefits?
- Multivitamins may be harmful in some cases
- Should you take multivitamins?
- The bottom line
Multivitamins contain many nutrients that you may not need. If you have a nutrient deficiency, doctors recommend taking a supplement for that specific nutrient.
Multivitamins and multiminerals are the most commonly used supplements in the world.
Their popularity has increased rapidly in the past few decades (1, 2).
Some people believe that multivitamins can improve health, compensate for poor eating habits, and even reduce your risk of developing chronic diseases.
Multivitamins are supplements that contain many different vitamins and minerals, sometimes alongside other ingredients (3).
Given that there’s no standard for what constitutes a multivitamin, their nutrient composition varies by brand and product (3).
Multivitamins are also referred to as multis, multiples, or simply vitamins.
They’re available in many forms, including tablets, capsules, chewable gummies, powders, and liquids.
Most multivitamins should be taken once or twice per day. Make sure to read the label and follow the recommended dosage instructions.
Multivitamins are available in pharmacies, large discount stores, and supermarkets, as well as online.
Thirteen vitamins and about 15 minerals are essential to your health (4).
Many produce enzymes and hormones, boost your immunity, and keep your nerves and organs functioning properly (4).
Your body also needs these nutrients for reproduction, maintenance, growth, and the regulation of bodily processes.
Multivitamins may offer many of these vitamins and minerals — but in varying amounts. They may also contain other ingredients like herbs, amino acids, and fatty acids.
Because the Food and Drug Administration (FDA) doesn’t regulate dietary supplements as strictly as it regulates prescription drugs, some may contain higher or lower levels of some nutrients than stated on the label.
Additionally, some supplements may contain ingredients that can interact with medications, so speak with your healthcare provider before starting a new supplement (5, 6).
Heart disease is one of the leading causes of death worldwide (7).
While some believe that taking multivitamins can help prevent heart disease, research doesn’t seem to support it conclusively.
Some studies suggest that multivitamins are correlated to a reduced risk of heart attacks and death, while others show no effects (8, 9, 10, 11).
The Physicians’ Health Study II investigated the effects of daily multivitamin use in over 14,000 middle-aged male doctors for over a decade and found no reductions in heart attacks, strokes, or mortality (12).
However, a more recent study revealed that among women — but not men — taking a multivitamin for more than 3 years was linked to a lower risk of dying from heart disease (13).
SUMMARY
The evidence regarding multivitamin use and cancer risk is also mixed.
Some studies suggest no effect on cancer risk, while others link multivitamin use to increased cancer risk (9, 11, 14, 15).
One review examined five randomized controlled trials including 47,289 people. It found a 31% lower risk of cancer in men who took multivitamins, but no effect in women (16).
Two observational studies, one including only women and the other including both men and women, tied long-term multivitamin use to a reduced risk of colon cancer (17, 18).
Finally, the Physicians’ Health Study II noted that long-term, daily multivitamin use reduced cancer risk in men with a history of cancer, as well as those with no history of the disease (19).
SUMMARY
Brain function
Several small studies examining specific populations have found that multivitamins can improve memory in older adults (20, 21, 22). Multivitamins may also affect your mood. Research has not only revealed links between poor mood and nutrient deficiencies but also between nutritional supplements and reduced symptoms of anxiety and depression (23, 24, 25, 26, 27, 28). However, other studies reveal little to no changes in mood (29, 30).
Eye health
Age-related macular degeneration is one of the leading causes of blindness worldwide (31). One study found that taking antioxidant vitamins and minerals may slow its progression and help prevent it (32, 33, 34). Furthermore, some evidence indicates that multivitamins may reduce your risk of developing cataracts, another widespread eye disease (35, 36, 37). SUMMARY Multivitamins may help improve your memory and mood. What’s more, antioxidant vitamins and minerals may help slow the progression of certain diseases that cause blindness.
Dosage is an essential factor to consider when taking multivitamins.
Although high doses of some vitamins and minerals are acceptable for some people, high amounts can be harmful.
The appropriate dosage can depend on a vitamin’s solubility, which is categorized into the following two groups:
•Water-soluble. Your body flushes out excess amounts of these vitamins through your urine.
•Fat-soluble. Since your body has no easy way to get rid of these, excess amounts may accumulate in your liver.
Pregnant people need to be especially careful with their vitamin A intake, as excessive intakes have been linked to congenital disabilities (38).
Multivitamins aren’t right for everyone and may even harm some individuals.
That said, specific populations may benefit from multivitamins, including:
•Older adults. Vitamin B12 absorption can decrease with age. Also, older adults may need more calcium and vitamin D (47, 48).
•Vegans and vegetarians. As vitamin B12 is found primarily in animal foods, those who follow plant-based diets are at a higher risk of deficiency of this vitamin. They may also lack calcium, zinc, iron, vitamin D, and omega-3 fatty acids (49, 50).
Other people who may benefit from multivitamins include those who’ve undergone weight loss surgery, are on low calorie diets, or don’t get enough nutrients from food alone (51, 52).
SUMMARY
Multivitamins are not a ticket to optimal health.
In fact, evidence that they improve health for most people is inconsistent. In some cases, they may even cause harm.
If you have a nutrient deficiency, it’s best to supplement with that specific nutrient. Multivitamins pack many nutrients, most of which you may not need. It may be best to speak with your healthcare provider to decide your best course of action.
Additionally, it’s best if you don’t take a multivitamin to compensate for a poor diet. Eating a balanced diet of fresh, whole foods is much more likely to ensure good health over the long term.
Apr 7, 2022 · Making Sense of Vitamins and Minerals: Choosing the foods and nutrients you need to stay healthy explains the evidence behind the benefits and safety profiles of various vitamins and minerals. It also includes the recommended minimum and maximum amounts you should consume, as well as good food sources of each.
- 4 Blackfan Circle, 4th Floor, Boston, 02115, MA
- hhp_info@health.harvard.edu
- (877) 649-9457
Aug 29, 2022 · While multivitamins are typically safe for most, they’re not a surefire way to get all the vitamins and minerals your body needs. Here’s why and here’s the best way to get what your body needs.
Cognitive Health. The COcoa Supplement and Multivitamin Outcomes Study (COSMOS) is a large randomized controlled trial that followed more than 21,000 older men and women (≥60 and ≥65 years, respectively) to study the effect of vitamins/minerals and cocoa flavanols on cancer and cardiovascular disease. [9]
Jan 5, 2024 · Introduced in the 20th century, multivitamins are the most popular dietary supplements in the U.S., with over 50% of Americans reporting at least occasional use, according to a study I conducted ...
